10-10-2012, 03:39 PM
(This post was last modified: 10-10-2012, 03:40 PM by Brightcolours.)
[quote name='photonius' timestamp='1349880207' post='20564']
Yes, the current EOS-M is probably more an awkward quick fix solution than anything else. Not that long ago, Canon (with the G1X) proposed to just monitor the market, and not yet going for it, but then Nikon came out, and they were the only ones left out. So, they cobbled something together with a P&S back, and a sensor in the pipeline that sort of might work (the 650D, but doesn't really work that well yet) and a 22mm lens. The EOS-M 18-55 looks simply like a revamped 18-55 IS kit. And the rest are existing EF and EF-S lenses.
I guess the key here is that they committed now to a new mount system that still uses their APS-C.
They will exploit this mount and form factor in the future with better bodies (a second one - probably more pro is rumored to be coming).
But if sensors become more high resolution in the future, they could also do something like Nikon does on their FF cameras that can mount crop lenses, i.e. an automatic crop.
So, in theory one could stick a sensor with the same resolution and characteristics as a m4/3, but in APS-C size, into an EOS-M body, and then mount smaller form factor lenses (i.e. similar in size to shorter focal length m4/3 lenses) with a slightly smaller image circle that gets automatically cropped. This could be extrapolated to even higher density chips.
[/quote]
Some incorrect statements... Canon representatives already said Canon was working on an EVIL before the G1 X was announced. You assume that the M got the 650D sensor, but probably it is the other way around.
The M 18-55 IS STM clearly is not a "revamped EF-S 18-55 IS kit lens". The distance from back element to sensor is a LOT smaller. This means that the optics have to be a total redesign.
They do not even have one single element similar, let alone any groups:
![[Image: lens-construction.png]](http://cweb.canon.jp/ef/lineup/ef-s/ef-s18-55-f35-56is-ii/img/spec/lens-construction.png)
![[Image: lens-construction.png]](http://cweb.canon.jp/ef/lineup/ef-m/ef-m18-55-f35-56is-stm/img/spec/lens-construction.png)
The resulting MTFs also are very different.
Yes, the current EOS-M is probably more an awkward quick fix solution than anything else. Not that long ago, Canon (with the G1X) proposed to just monitor the market, and not yet going for it, but then Nikon came out, and they were the only ones left out. So, they cobbled something together with a P&S back, and a sensor in the pipeline that sort of might work (the 650D, but doesn't really work that well yet) and a 22mm lens. The EOS-M 18-55 looks simply like a revamped 18-55 IS kit. And the rest are existing EF and EF-S lenses.
I guess the key here is that they committed now to a new mount system that still uses their APS-C.
They will exploit this mount and form factor in the future with better bodies (a second one - probably more pro is rumored to be coming).
But if sensors become more high resolution in the future, they could also do something like Nikon does on their FF cameras that can mount crop lenses, i.e. an automatic crop.
So, in theory one could stick a sensor with the same resolution and characteristics as a m4/3, but in APS-C size, into an EOS-M body, and then mount smaller form factor lenses (i.e. similar in size to shorter focal length m4/3 lenses) with a slightly smaller image circle that gets automatically cropped. This could be extrapolated to even higher density chips.
[/quote]
Some incorrect statements... Canon representatives already said Canon was working on an EVIL before the G1 X was announced. You assume that the M got the 650D sensor, but probably it is the other way around.
The M 18-55 IS STM clearly is not a "revamped EF-S 18-55 IS kit lens". The distance from back element to sensor is a LOT smaller. This means that the optics have to be a total redesign.
They do not even have one single element similar, let alone any groups:
The resulting MTFs also are very different.