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I'm not sure if you are asking about the micro four thirds standard or the 4:3 aspect ratio, so I'll answer both: Why do mirrorless cameras use micro four thirds? They don't, only Panasonic and Olympus build micro four thirds cameras, there are a lot of other companies making mirrorless cameras (for example: Sony, Fujifilm, Samsung, etc.) that have other ...


7

The Four Thirds standard for digital SLRs was designed by Olympus and Kodak to be the first system specifically made for digital, with high standards for telecentric lenses and other design choices for a modern era, rather than adapting a film lens mount. At the time, full-frame sensors were really out of reach in terms of cost, and the smaller sensor ...


3

This article on 4/3 Rumors about the future of 4/3rds is two years old now, but everything said is still true. Although no one has officially turned off the lights and locked the door, the original Four Thirds system is defunct, with both big players (and for that matter, smaller ones like Kodak licensee JK Imaging) supporting the mirrorless camera system ...


2

Thom Hogan of http://www.bythom.com fame is also writing at http://www.sansmirror.com/. I find that he has some good reviews and some good insight as to what 4/3rds is currently good at and where it needs to improve.


2

You probably want the Olympus MMF-3 Four Thirds to Micro Four-Thirds adapter. This will give you full electronic communication with the four-thirds lens so you can meter and autofocus the lens, although AF performance can vary, depending on the lens and the adapter. There are several other options, (including the MMF-2, and MMF-1/Panasonic DMW-MA1, and ...


2

You need to know the mount of both the camera and lens to find an appropriate adapter, if one exists. You state that the camera has a micro-four-thirds mount. You state that the lens has a (not micro) four-thirds mount. FD is an old Canon mount. It is unlikely to be what you are looking for. OM is an old full frame (not four-thirds) Olympus mount, also ...


2

The lens is for a Four-Thirds mount camera. Your Panasonic is a Micro Four-Thirds (MFT) mount camera. Thus, you will need a Four-Thirds to Micro Four-Thirds adapter. Related questions: Micro four thirds lens and camera compatibility Does Pentax make a lens adapter to fit Olympus lenses? Micro Four Thirds: Which lens adapters are most compatible? Other ...


1

The reason is historical. Before Micro Four-Thirds, there was Four-Thirds which defined a 4:3 aspect-ratio sensor. The reason is simply that Olympus research concluded that 4:3 aspect-ratio was most pleasing. They even had 4:3 half-frame (2X crop) film cameras. When Olympus and Panasonic decided to go mirrrorless, it was advantageous to bootstrap the system ...


1

I think the options are pretty straightforward. Stick With 4/3 While the system is pretty much dead and no longer growing, you could, with your budget, still find a used higher-tiered and newer body than the E-510. The E-450, E-520, E-600, E-620, E-30, E-3, and E-5 are all bodies that came out after your E-510 and could offer sensor improvements as well ...


1

As I understand you have a lens with manual diaphragm ring. Your camera will be able to adjust it only if you close it to maximum. In other words, if you want your camera to be able to change aperture, you need to fully close the aperture manually.


1

The forum section at http://www.dpreview.com/ tends to focus on equipment. Checkout "Olympus DSLR Talk" and "Micro Four Thirds Talk". -enjoy


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