Rumors > EOS Bodies
Odds & Ends: 70D, 7D2, New Full Frame, D600 & Photoshop CS6
bp:
IMHO, the only way a FF sensor on 7D2 would make sense, would be If they also gave it a crop sensor mode. Something to allow current APS-C shooters with lots of EF-S lenses continue to use their glass. This could also lead some of them to buy new EF lenses, to take advantage of the non-cropped full frame and get more out of their new camera, and sell more glass in the process. Could be a smart move. But then of course, the lack of a crop mode in other models would cause grumbling.
Astro:
--- Quote from: bp on June 14, 2012, 01:46:56 PM ---IMHO, the only way a FF sensor on 7D2 would make sense, would be If they also gave it a crop sensor mode. Something to allow current APS-C shooters with lots of EF-S lenses continue to use their glass.
--- End quote ---
that is not possible with the EF mount and EF-S lenses.... or is it?
the cameras made for EF-S allowing lens elements to be closer to the sensor.
and if you put them on FF you would have troubles with the image circle of EF-S lenses.. not?
because they need to be farther away because of the larger mirror.
ruuneos:
If 7D2 is going to be full frame so yeah going to upgrade with those rumored specs!
--- Quote from: Astro on June 14, 2012, 01:53:59 PM ---
--- Quote from: bp on June 14, 2012, 01:46:56 PM ---IMHO, the only way a FF sensor on 7D2 would make sense, would be If they also gave it a crop sensor mode. Something to allow current APS-C shooters with lots of EF-S lenses continue to use their glass.
--- End quote ---
that is not possible with the EF mount and EF-S lenses.... or is it?
--- End quote ---
Well 7D to 1100D have already EF and EF-S mounts so why not?
Astro:
--- Quote from: ruuneos on June 14, 2012, 01:58:07 PM ---If 7D2 is going to be full frame so yeah going to upgrade with those rumored specs!
--- Quote from: Astro on June 14, 2012, 01:53:59 PM ---
--- Quote from: bp on June 14, 2012, 01:46:56 PM ---IMHO, the only way a FF sensor on 7D2 would make sense, would be If they also gave it a crop sensor mode. Something to allow current APS-C shooters with lots of EF-S lenses continue to use their glass.
--- End quote ---
that is not possible with the EF mount and EF-S lenses.... or is it?
--- End quote ---
Well 7D to 1100D have already EF and EF-S mounts so why not?
--- End quote ---
they are not FF.
the APS-C sensor has to cover a smaller image circle and needs a smaller mirror.
you can adopt nikon lenses on canon cameras but not the other way around (flange distance).
this is a different issue but shows you can not always expect a bi-directional compatibility.
--- Quote ---The "S" in EFS stands for "Short back focus", which means the distance between the rearmost optical surface of the lens and the film (or in this case the digital sensor) is shorter than that of a normal Canon EF series lens. A shorter back focus does have some advantages when designing wide-angle lenses, but there's a limit to how short it can be in an SLR lens since it can't be so short that the SLR mirror hits it when it flips up. The lower limit on the size of the mirror depends on the size of the film (or sensor). Medium format SLRs need a big mirror, 35mm SLRs need a smaller mirror and SLRs with a digital sensor smaller than a full frame 35mm frame can use an even smaller mirror.
Since the sensor in the Digital Rebel is only 22.7mm x 15.1mm, smaller than the 24mm x 36mm full frame 35mm frame size, the SLR mirror can be (and is) smaller, so it can use a lens with a shorter back focus than full frame cameras, hence the EF-S lens.
Since the lens can have a shorter back focus distance, and it can also have a smaller image circle then a lens designed for full frame 35mm use, it should be possible to make a better, smaller, lighter lens for a lower cost than if it had a standard back focus and had to cover a full 43mm image circle.
http://www.bobatkins.com/photography/tutorials/efs-10d.html
--- End quote ---
pedro:
Entry Level FF by Q1 2013?
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