Best Micro Four Thirds Lenses – 2019 Top Picks Reviewed

The photography world was taken by storm by the invention of micro four-thirds lenses. For a long time, many people had forgotten about brands like Olympus and Panasonic and only opted for Nikon and Canon. These brands were put back on the radar as these lenses offer tremendous convenience and great quality pictures.

Unfortunately, a lot of people still don't understand how these lenses work and what they offer. Therefore, we have the ultimate guide to the best micro four-thirds lenses, which includes all you need to know about these and the features they offer. We also have some excellent recommendations suitable for many budgets and photography styles. 

Comparison Chart of the Best Micro Four Thirds Lenses

PRODUCT
gm2-table__image

Olympus M.Zuiko Digital 17mm F1.8 Lens

  • Premium metallic construction
  • f/1.8 maximum aperture for low light photography
  • The incredible construction of this unit makes it the best overall
View Latest Price
gm2-table__image

Sigma 30mm F1.4

  • Weighs just 9.3 oz.
  • F1.4 maximum aperture
  • Excellent, advanced lens performance makes it the runner-up
View Latest Price
gm2-table__image

Panasonic Lumix G Macro Lens, 30MM, F2.8 ASPH

  • Weighs about 9.6 ounces
  • Features a 240fps drive autofocus
  • Incredibly reliable and consistent, and is the best for the money
View Latest Price
gm2-table__image

Rokinon 10mm F2.8 ED AS NCS

  • 3 high precision lens elements
  • Features f2.8 maximum aperture
  • Best wide-angle lens for micro four thirds
View Latest Price
gm2-table__image

Olympus M.Zuiko Digital ED 12-40mm F2.8 PRO Lens

  • Features a constant f2.8 maximum aperture
  • Equipped with a manual focus clutch mechanism
  • Solid construction makes it the best micro four-thirds zoom lens
View Latest Price
gm2-table__image

Panasonic Lumix Professional 12-35mm

  • F2.8 constant maximum aperture
  • Features 24-70 mm focal length range
  • Advanced optical image stabilization feature makes it the best micro four thirds for video
View Latest Price
gm2-table__image

Olympus M.Zuiko Digital ED 60mm F2.8

  • Features a focal length of 60mm
  • 7.4-inch minimum working distance
  • The incredible magnification it offers allows it to be the best macro lens for micro four thirds
View Latest Price
gm2-table__image

Olympus M.Zuiko Digital ED 40-150mm

  • Features a 3.75x zoom
  • Features a focal length of 40 to 150 millimeter
  • The beautiful bokeh it is able to create makes it the best portrait lens for micro four thirds
View Latest Price
gm2-table__image

Panasonic Lumix G Leica DG Summilux Lens, 25mm, F1.4 ASPH

  • Weighs about 7.94 oz.
  • Features f1.4 maximum aperture
  • Best micro four thirds prime lens
View Latest Price
gm2-table__image

Panasonic Lumix G II Lens, 20MM, F1.7 ASPH

  • Maximum aperture is f1.7
  • Best pancake lens for micro four thirds
  • Weighs about 3.04 ounces and has a compact construction
View Latest Price

What is a Micro Four Thirds Lens?

A micro four-thirds lens has been around for a while now and is becoming one of the most increasingly popular lenses. It was created by the brand Olympus and Eastman kodak. The term micro four-thirds lens is from the sensor aspect ratio, which is 4:3.

The size of the lens is smaller than what standard DSLRs carry, which have full-frame or some have cropped sensors. The idea behind this creation was to make telephoto lenses smaller and lightweight by reducing the sensor size but not inhibiting its properties. 

What to Look for When Buying a Micro Four Thirds Lens

There are so many technicalities associated with buying a lens, which tends to make the process overwhelming and daunting for the consumer. Therefore, we have listed the top factors you need to look into when buying one. These will ensure you get an incredible lens. 

Maximum Aperture

F1.4 and f2.8 are the two desirable maximum apertures to look for in lenses. The maximum aperture is the measure of how wide your lens opens to let light rays in. It majorly impacts how well your product will work in lowlight conditions. It also allows the lens to create a beautiful bokeh. 

Image Stabilization and Vibration Reduction

These are important characteristics to look for in a lens. They enable the lens to take sharp and clear images or videos even when filming while handheld.

Weight and Size

The unit you choose should not weigh a lot or be too large. This makes the product not easy to travel with or to pack. Furthermore, it causes physical strain if you're shooting for longer intervals. 

Quick Take - Best Micro Four Thirds Lenses

Before we dive into our review, here are the best micro four thirds lenses:

  1. Olympus M.Zuiko Digital 17mm F1.8 Lens
  2. ​Sigma 30mm F1.4
  3. PANASONIC LUMIX G MACRO LENS, 30MM, F2.8 ASPH

Review of the Best Micro Four Thirds Lenses

If you went out to buy micro four-thirds lenses without having some ideas of what you are looking for, you would pull your hair out of frustration. There are so many brands competing to offer the best of the best. This makes it hard for a consumer to decide which product to invest in. Therefore, we have some of the best lenses in the market you can get your hands on. Let's take a detailed look at them:

Olympus M.Zuiko Digital 17mm F1.8 Lens, for Micro Four Thirds Cameras (Black)

PROS

  • Linear drive motor provides fast and quiet focusing
  • Premium metallic construction allows this unit to be incredibly durable
  • Lightweight and portable design allows it to be compact and travel-friendly
  • Fast f/1.8 maximum aperture makes this incredible for low light conditions
  • Dual super Aspherical element minimizes chromatic and comatic aberration

CONS

  • Offers noticeable vignette
  • Close focus capabilities need improvement
  • Switching to manual focusing is a bit of a hassle

What Recent Buyers Report

Buyers find this unit to be as near as perfection as one can get. The overall construction is an excellent quality metal that allows it to be highly durable. It has a very ergonomic design tailored to the ease of use of the consumer. The incredible features it offers and the stunning design work in conjunction to make it a consumer favorite product.

Why it Stands Out to Us

This unit caught our attention for multiple reasons. It features high-quality metal housing that allows it to be heavy-duty and durable. However, the construction is lightweight and compact. Furthermore, the unit features image stabilization, which allows one to shoot longer handheld exposures. It also features an f/1.8 maximum aperture that makes it wonderful for low light conditions.

Who Will Use This Most

This unit features an incredible f1.8 maximum aperture that allows it to work wonderfully well for low light photography, which isn't a strong suit of many lenses on the market. The overall construction is compact and lightweight, allowing it to be great for traveling as well. Given its features, it is suitable for both beginners and experts.

Bottom Line

Overall, it is an incredibly well-designed camera lens. Its innovative design has many such features that allow it to be very user-friendly and convenient. It is able to produce excellent quality images. Furthermore, the compact design makes it great to travel with. Therefore, it is an excellent lens to invest in.

Runner-up:
Sigma 30mm F1.4

Sigma 30mm F1.4 Contemporary DC DN Lens for Micro 4/3

PROS

  • Features a smooth AF motor to enable video shooting as well
  • Compact and lightweight design allows it to be great to travel with
  • Fast maximum aperture is able to provide superior quality low light performance
  • Incredibly versatile and can cover a wide range of photo and video capture scenarios
  • Fast maximum aperture enables it to produce softly blurred backgrounds to give stunning bokeh

CONS

  • Autofocus isn't super-fast
  • Not the best walk-around lens

What Recent Buyers Report

Buyers find this to be one of the best lenses they have ever used. Its construction and design enable it to be highly versatile and convenient for the average user. The overall composition is sleek, compact, and stunning. In addition, they report that it is able to produce some great quality pictures.

Why it Stands Out to Us

It captured our interest for multiple reasons. Firstly, it is compact and lightweight even though the construction is heavy-duty with great quality materials, enabling it to be durable. It gives very consistent performance and is able to produce high-quality images, even in unfavorable conditions such as low light.

Who Will Use This Most

This unit is an incredibly versatile lens that's able to perform well under many conditions and for many photography styles. It has a fast aperture of f1.4, allowing it to work well under low light conditions and enabling it to produce a soft blurred background for stunning bokeh in portraits. Furthermore, the compact and lightweight construction allow it to be travel-friendly.

Bottom Line

All in all, it is one of the most wholesome products you will come across. The pros it features largely outweigh the cons. It is incredibly reliable and convenient, plus it is able to provide consistent results under many conditions. Therefore, it is a great product to invest in.

PANASONIC LUMIX G MACRO LENS, 30MM, F2.8 ASPH., MIRRORLESS MICRO FOUR THIRDS, MEGA OPTICAL I.S., H-HS030 (USA BLACK)

PROS

  • One of the most affordable and reliable options on the market
  • Aspherical lens elements reduce coma and chromatic aberrations
  • Maximum aperture allows it to work well under low light conditions as well
  • Fast f2.8 maximum aperture allows it to produce stunning soft blurred backgrounds
  • Features optical image stabilization for sharper images, even during handheld shooting

CONS

  • Lens cap cannot fit the product with a shade threaded on
  • Autofocus seems to have a problem focusing on close objects
  • Focal length needs to be longer, so one doesn't have to get so close to the object for macro photography

What Recent Buyers Report

Buyers are very happy with the construction of this unit. Firstly, it is incredibly user-friendly. The design is very intuitive, and one has no hiccups and delays while operating it. The autofocusing is sharp and silent. Furthermore, it has image stabilization, which allows it to create beautiful and sharp images.

Why it Stands Out to Us

There are many reasons this product caught our attention. Firstly, it features image stabilization so one can shoot in handheld mode all they want without worrying about shaky pictures. The overall construction is travel-friendly too. The aspherical lens element allows it to reduce coma and chromatic aberrations, and thus produces sharp images.

Who Will Use This Most

If you have been looking for an affordable lens for macro photography, this unit is a great option. It offers clear and sharp images and works wonderfully well for macro photography. The fast maximum aperture allows it to be great for low light photography and enables it to produce beautiful bokeh.

Bottom Line

Overall, this unit is one of the best you can get your hands on. It is great for those on a budget, and even if you are, it is wonderful to have in your photography kit. It carries great features that allow it to produce stunning, high-quality pictures.

Best Wide Angle Lens for Micro Four Thirds:
Rokinon 10mm F2.8 ED AS NCS

Rokinon 10mm F2.8 ED AS NCS CS Ultra Wide Angle Lens for Nikon Digital SLR Cameras with AE Chip for Auto Metering (10MAF-N)

PROS

  • Rugged, heavy-duty and compact construction allows it to be travel-friendly
  • Features nano-coating system that enhances light transmission and reduces lens flare
  • Super wide-angle lens brings more of the scene in the image without causing distortion
  • Fast, f/2.8 maximum aperture enables it to work wonderfully well in lowlight conditions as well
  • Aspherical and extra-low dispersion lens elements reduce coma and other chromatic aberrations

CONS

  • Lacks a filter slot
  • Slightly tricky to focus
  • Heavier than its counterparts

What Recent Buyers Report

Buyers are incredibly impressed with the working of this unit for multiple reasons. Firstly, it has many features that enable an incredibly convenient and ergonomic user experience. Furthermore, it is compact and travel-friendly. They further commented that the image it produced is of great quality and sharp.

Why it Stands Out to Us

It offers aspherical and extra-low dispersion lens elements that reduce coma and many other chromatic aberrations. The fast, maximum aperture enables it to work wonderfully well for low light conditions as well. Furthermore, it has a nano-coating system that reduces lens flare and enhances light transmission.

Who Will Use This Most

This unit has many uses due to its innovative and versatile nature. It works particularly well for wide-angle photography, which isn't the strong suit for many of its counterparts. It is able to capture so much of the world in the image without any distortion. It works great in low lighting conditions as well due to its fast f2.8 maximum aperture.

Bottom Line

Overall, it's a great unit. It works well under many lighting conditions. It is wonderful to travel with and is convenient to use. It honestly is any photographer's dream-come-true. The overall construction is of great quality, and the internal features are highly commendable as well. All of this makes it a great investment.

Best Micro Four Thirds Zoom Lens:
 Olympus M.Zuiko Digital ED 12-40mm F2.8 PRO Lens

Olympus M.Zuiko Digital ED 12-40mm F2.8 PRO Lens, for Micro Four Thirds Cameras

PROS

  • Great wide-angle lens allowing one to capture more of the scene without any distortion
  • Construction is rugged and weatherproof as it is drip-proof, dust-proof and freeze-proof
  • Has an f2.8 constant maximum aperture which enables it to be great for low lighting conditions
  • Works wonderfully well to produce beautifully blurred backgrounds, therefore, is great for portraits
  • Features Aspherical lens and extra-low dispersion lens to reduce coma and other chromatic aberrations

CONS

  • On the higher-end of the spectrum
  • Heavier and larger than some of its counterpartsAt wide open, it has a barely noticeable distortion

What Recent Buyers Report

Users report its overall construction to be incredible. It has quickly become a consumer favorite product for many reasons. It offers an incredibly rugged and weatherproof construction that makes it perfect to use despite the harsh temperature conditions. However, it is slightly heavy and expensive, but the performance it provides makes it worth the splurge.

Why it Stands Out to Us

It stands out to us for multiple reasons. Firstly, it features very solid, dust-proof, freeze-proof, and drip-proof construction, enabling it to be highly durable. Furthermore, features such as aspherical and ED lens elements allow it to reduce chromatic aberration and produce a very sharp and clear image.

Who Will Use This Most

This unit is great for many photography styles. If you have been looking to invest in a great overall lens, this one is perfect. It has wide-angle capabilities without displaying distortion. Furthermore, the constant maximum aperture of f2.8 allows it to be great for lowlight conditions. The aperture also creates a dreamy bokeh in portraits.

Bottom Line

This is one of the most versatile lenses on the market. It is great as it carries many features and has a very innovative design. On the whole, it is highly capable of working for many photography styles, enabling one to have creative freedom. The design is also well-built, allowing it to be a great investment.

Best Micro Four Thirds for Video:
Panasonic Lumix Professional 12-35mm

PANASONIC LUMIX Professional 12-35mm Camera Lens G X VARIO II, F2.8 ASPH, Dual I.S. 2.0 with Power O.I.S., Mirrorless Micro Four Thirds, H-HSA12035 (2017 Model, Black)

PROS

  • Features nano-coating to reduce lens flare and ghosting
  • Heavy-duty metal body enables it to be highly durable and reliable
  • High-speed zoom enables it to cover wide-angle to standard medium telephoto
  • Constant maximum f2.8 aperture enables it to work wonderfully well in lowlight conditions
  • Features advanced optical image stabilization, allowing it to produce excellent 4k shooting results even with handheld shooting

CONS

  • On the higher end of the spectrum

What Recent Buyers Report

Buyers are very happy with this unit for a number of reasons. Firstly, it offers consistent performance in many lighting conditions. Moreover, it has a very versatile nature, allowing it to work for different styles of photography and enabling it to be a great lens overall and a consumer favorite.

Why it Stands Out to Us

It caught our attention for a number of different reasons. Firstly, it has great overall construction, enabling it to be durable. Moreover, features like the f2.8 constant maximum aperture allow it to work exceptionally well in lowlight conditions as well as for capturing beautiful bokeh.

Who Will Use This Most

This product gives one great creative freedom and offers a lot of room to learn and practice new skills. You can get wide-angle shots from it with practically no distortion, and you can get beautiful bokeh as well. This works wonderfully well to shoot videos, given its incredibly advanced optical image stabilization.

Bottom Line

Overall, this unit is incredibly well-built and great for a number of reasons. It is on the higher end of the spectrum but is worth splurging on, given its incredible performance and image quality. The construction is very heavy-duty, allowing it to be highly durable and reliable as well.

Best Macro Lens for Micro Four Thirds:
Olympus M.Zuiko Digital ED 60mm F2.8

Olympus M.Zuiko Digital ED 60mm F2.8 Macro Lens, for Micro Four Thirds Cameras

PROS

  • Lightweight and portable construction allows it to be travel-friendly
  • Weatherproof, therefore, can work well for harsh conditions as well
  • Features aspherical and ED lens elements to reduce chromatic aberrations
  • Maximum aperture enables it to work wonderfully well in lowlight conditions as well
  • F2.8 maximum aperture enables it to capture beautifully blurred backgrounds for portraits

CONS

  • Does not have a full metal body
  • Manual focusing is troublesome
  • Displays barely noticeable distortion, but it's there

What Recent Buyers Report

This unit is a consumer favorite for a number of reasons. Even though some people want a full metal body, its plastic construction makes it lightweight and, therefore, convenient to travel with. Buyers really appreciate its high-quality build. Furthermore, it is versatile and can work for a number of different scenarios.

Why it Stands Out to Us

This unit stood out to us for a number of reasons. Firstly, the features it carries, such as maximum aperture that enables excellent low light performance and great bokeh, are often found in its much higher-end counterparts. Furthermore, the construction is so well-thought-through, rugged, and solid.

Who Will Use This Most

This unit is incredibly well built and offers multiple features for smooth operation. It is incredibly user-friendly, allowing it to work for beginners as well. The overall construction is sturdy; therefore, it works for harsh weather conditions as well. It works great for macro photography, given its incredible magnification.

Bottom Line

Overall, this unit is a gem. It is rare to tumble upon lenses, which are this innovative at a good and reasonable price range. It is highly versatile and well-built, enabling it to be a long-term investment. It carries a very ergonomic design jam packed with features to give creative freedom.

Best Portrait Lens for Micro Four Thirds:
Olympus M.Zuiko Digital ED 40-150mm

Olympus M.Zuiko Digital ED 40-150mm F4.0-5.6 R Zoom Lens, for Micro Four Thirds Cameras (Black)

PROS

  • Features a silent and efficient autofocus
  • One of the most affordable and reliable options on the market
  • Lightweight and compact constructions allow it to be travel-friendly
  • Features image stabilization to offer better handheld shooting performance
  • Features high-power zoom, enabling it to shoot indoors, outdoor, close-up portraits, etc.

CONS

  • Not the best for low light photography
  • Focus isn't the best at longer focal lengths
  • Plastic construction cheapens the overall feel

What Recent Buyers Report

This unit is a consumer favorite product for multiple reasons. The overall construction is lightweight and portable, which allows it to be great for travel. It even offers image stabilization, which makes it user-friendly. Furthermore, it offers incredibly efficient and silent autofocus, which users really like.

Why it Stands Out to Us

It stands out to us for multiple reasons. Firstly, it features image stabilization that allows it to create sharp and clear images, even with handheld shooting. The autofocus feature is efficient and silent, so your subject isn't disturbed. Plus, its maximum aperture allows it to be great for creating beautiful bokeh, therefore great for portraits.

Who Will Use This Most

This unit will work wonderfully well for portraits, outdoor, and indoor shoots. The overall construction is lightweight and portable, which allows it to be travel-friendly. The incredible zoom it features enables it to have such a versatile nature. It is incredibly affordable as well, which makes it accessible for many people. Furthermore, the great maximum aperture makes it perfect for portraits as well.

Bottom Line

All in all, it is a great unit. It is incredibly affordable and a great investment as it features a well-built and innovative design. It carries features like image stabilization to allow better handheld shooting experience, which isn't the best suit for many of its counterparts.

PANASONIC LUMIX G Leica DG SUMMILUX Lens, 25mm, F1.4 ASPH, Mirrorless Micro Four Thirds, H-X025 (USA Black)

PROS

  • Has a 46mm thread mount for polarizer to offer greater creative control
  • Fast, maximum aperture allows it to provide beautiful soft blurred backgrounds
  • Constructed from high-quality materials, enabling it to be highly durable and reliable
  • Features nano-coating system which reduces lens flare and improves light transmission
  • Fast f1.4 maximum aperture allows it to work wonderfully well for low light conditions as well

CONS

  • Isn't compact and lightweight
  • On the higher end of the spectrum

What Recent Buyers Report

Buyers are very happy with this unit. Many consumers compliment their aesthetic and ergonomic design and find it to be one of their most-used lenses. However, some buyers did complain of the heavyweight and large size, but the performance it provides makes it worth the hassle. They also state that it is great for low light conditions and for creating beautiful bokeh.

Why it Stands Out to Us

It stands out to us for multiple reasons. Firstly, it is incredibly well-built and is constructed from great quality materials, enabling it to be highly durable and reliable. It provides consistent quality images despite the lighting conditions thanks to the wonderful fast, maximum aperture. Furthermore, it creates wonderful portraits with beautifully blurred backgrounds due to the f1.4 maximum aperture.

Who Will Use This Most

The fast f1.4 maximum aperture it offers enables it to work wonderfully well for lowlight conditions. It also enables it to provide a beautifully blurred background for bokeh to create stunning portraits. It isn't accessible to everyone as it is slightly expensive; however, it's worth saving up for as it is incredibly durable and reliable.

Bottom Line

Overall, this is one of the best units you can get your hands on. Granted it is on the pricier end of the spectrum, the performance and quality of image it produces make it worth the splurge. The quality construction and incredible features it offers enable it to be a great investment. It is surely worth checking out.

Best Pancake Lens for Micro Four Thirds:
Panasonic Lumix G II Lens, 20MM, F1.7 ASPH

PANASONIC LUMIX G II Lens, 20MM, F1.7 ASPH, MIRRORLESS Micro Four Thirds, H-H020AK (USA Black)

PROS

  • Featured advance autofocus is incredibly efficient and sharp
  • Compact and lightweight construction makes it travel-friendly
  • One of the most reliable and budget-friendly options on the market
  • Aspherical lens elements allow it to reduce coma and other chromatic aberration
  • Fast, f1.7 maximum aperture allows it to work well in low lighting conditions as well

CONS

  • Autofocus is a little noisy
  • Manual focus needs improvement
  • Does not feature image stabilization

What Recent Buyers Report

The unit seemed to have greatly impressed consumers for multiple reasons. Its overall construction is durable and highly reliable. You can expect consistent results from the unit regardless of what the lighting conditions are. It is even equipped to combat chromatic aberration. Furthermore, the autofocus is very efficient and sharp too. All of this combines to make it a consumer favorite lens.

Why it Stands Out to Us

This unit features an f1.7 maximum aperture that allows it to work wonderfully well in low lighting conditions too. The overall construction is rugged and compact, which makes it travel-friendly. Plus, it features Aspherical lens elements to reduce chromatic aberration. Furthermore, it has a fast and sharp autofocus.

Who Will Use This Most

This would work for many people. Firstly, the construction is user-friendly and ergonomic; therefore, it can be used by amateurs and beginners as well as professionals. Furthermore, it features multiple features to reduce lens flare, coma, and chromatic aberrations. The fast, maximum aperture contributes to it working wonderfully in low lighting conditions as well.

Bottom Line

Overall, this unit is incredibly well-built. It even offers multiple features to enhance its image quality and overall performance. Furthermore, it features a very stylish and ergonomic design, which makes it convenient to use. All of this contributes to make it a great investment.

Perks of Getting a New Micro Four Thirds Lens

There might be people who are still on the fence about getting a new micro four-thirds lens. Therefore, we have gathered some of the many benefits they offer to help you decide whether these are worthy of your time and investment. Let's take a look at them:

Travel-Friendly

One characteristic of micro four-thirds lenses is their compact and lightweight body. This allows one to capture stunning portraits, low light photos, wide-angle or telephoto pictures without having to carry those heavy, full-frame camera lenses which cause physical strain when having to film with them for long.

Versatile

They are all interchangeable; therefore, they will work for MFT compatible camera bodies of many brands. Furthermore, they offer multiple features such as fast maximum aperture, quiet and efficient autofocusing, etc. that enable them to work for a number of different shooting conditions. 

Brighter Corners

They feature a mechanism known as a technical optical path, which allows the light hitting the sensors to travel at a 90-degree angle towards the sensor, thereby reducing bright corners and enhancing the resolution. 

Conclusion

The reason why micro four-thirds lenses rose to popularity is their incredibly compact and convenient design combined with stunning features to provide great quality pictures. They have quickly become a favorite of professionals and amateurs for multiple reasons. Some appreciate their versatility, whereas others like their consistency. 

They have something to offer to everyone, as they are available in a number of different price points as well. All of this translates to them being a great lens to have in your kit. Buying these can surely be an overwhelming process. Therefore, it is important to know what you seek from them and research the product well before buying it. 

Hopefully, this post was able to provide you all the relevant information you came here looking for and proved to be helpful. 

People Also Ask

Micro four-thirds lenses have quickly risen to popularity and seem to have a big fan base. However, a lot of people have questions about how they work and the features they offer. Therefore, we took some of your most frequently asked questions and decided to answer them. 

Do all Micro Four Thirds Lenses ​Compatible?

Yes, they are! All micro four-thirds lenses work on MFT compatible camera bodies of any brand. 

Is Full Frame Better Than Micro Four Thirds?

It depends upon personal preference. Micro four-thirds are used by professionals as well; however, they are more inclined to work for photography enthusiasts, beginners, and travelers better, given that they are a fraction of the price of a full-frame lens and are portable. However, full-frame camera lenses provide better low light performance. 

What's the Difference Between Four Thirds and Micro Four Thirds?

Micro four-thirds lens system is, in fact, a projection of the four-thirds system. The latter was also a system of interchangeable lenses; however, the new versions are even more compact and lightweight.