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Will Canon's FF Mirrorless be EF or EF-M Mount?

Started Dec 27, 2017 | Polls thread
davev8
davev8 Veteran Member • Posts: 4,833
Re: Anything other than EF mount is suicide
4

Photato wrote:

nnowak wrote:

First and foremost is the problem of perception if Canon were to go full frame EF-M mount. Full frame EF-M instantly signals to every working pro that their entire EF lens inventory is now obsolete and will soon drop in value. Think that might anger a few people? If the long term prospect is that you will eventually replace every lens you own with a virtually identical EF-M version, what is to stop you from just starting over with Nikon or Sony?

There is more friction to change to a different system than just the perception that your glass will eventually depreciate in value. You could also argue that in the Sony system you have the option of portable FF bodies with small primes which are currently non existent on Canon FF.

that because canon dont yet make a FF MILC ...if you take say the 200D/SL2 remove the mirror ..remove the mirror motor and gearbox ,remove the AF modul ,remove the space needed for the light path to the OVF replace the pentamirror/OVF with the more compact EVF you will fit a FF sensor in the 200D/SL2...the EF mount has no bearing on how compact the body is..as the grip on sony's body sticks out farther than the canon mount

as can clearly be seen both thes body will fit in the same compartment of a bag ....the canon evan has pilt in flash ...every generation of sony has been increasing the grip size to get back some ergonomics

Next up are the technical merits of the two mounts. With the mirror gone, there are no optical designs that you could build for the EF-M mount that could not be duplicated in the EF mount. In fact, the EF mount makes bright lenses easier due to the much larger throat diameter.

Almost every single EF-M lens is sharper than its EF equivalent due to the shorter flange back distance. This is not theory, you can clearly see it in the resolution charts, EF-S vs EF-M.

the M lenses are not sharp because of the mount...they are sharp simply as they are new optical designs ...if your theory is correct why has sony's only affordable SHARP APS-c lens ...the 50mm F1.8 OSS got a built in spacer in it? ...its the same length as the canon 50mm STM+ adaptor which is a 50 year old optical design FF EF mount lens but the sony is a very sharp lens ....

also as pointed out there is no reason not to have the rear element close to the sensor when there is no mirror ....which some wide angle leica fit lenses have been doing for 50 years with almost 1/2 the lens inside the body .for a VERY compact rig....but you can only do this with lenses below around 35mm ...the rest you build the spacer into the lens to allow for the missing mount

The adapter thing is a temporary transitional stuff.
Business wise it makes more sense for Canon to have pcustomers buy the newer EF-M lenses to enjoy its benefits yet users are not forced to do it.

People need to stop thinking in terms of a full frame M2 + 22mm and start thinking in terms of a mirrorless 1DX + 600mm f4.

You could think about Sony A + 35mm lens vs Canon 5D + 35mm

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My 5D IS a MK1 classic
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There is no argument for FF vs APS-c (or m43) with shallow DOF..as it's a law of physics and a very subjective personal thing if you want to make use of the shallow DOF only FF can offer
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Political correctness....somebody being offended on someone else's behalf....who that someone doesn't give a damn in the first place ....David Appleton
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quoting irrefutable facts may get you branded a racist ..even if no race is involved .......David Appleton

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