IQ of 7d w 15-85mm Vs 6d w 24-105mm?

Started Mar 8, 2013 | Questions thread
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Re: IQ of 7d w 15-85mm Vs 6d w 24-105mm?
In reply to usedtobedontrustme, Mar 9, 2013

usedtobedontrustme wrote:

According to my interpretation of DXO's lens tests and The Digital Pictures lens tests, a FF camera with a 24-105mm lens should have much sharper IQ than a crop with a 15-85mm. Is this the case?

I have very little faith in this type of test chart shots. Looking at many landscape style images from the 15-85IS (I own one, tested two other copies) and the 24-105 (don't own it, but seriously considered buying it for FF body), it seems to me that the corners on the 15-85 are much better in the WA range (viewed at equivalent size and aperture). And maybe also at other focal length settings, because in general (in practice) it is easier to get relatively good corners on the smaller sensors.

The 24mm end of the 24-105 is a real compromise in the borders/corners. However, it you don't do landscape/architecture style shots but mostly people/event shots, corner quality doesn't really matter and you can enjoy the generally better FF quality, with nearly the same range as the 15-85.

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