APS-C IMAGE QUALITY VS fULL fRAME AT TESTING

Started Feb 24, 2013 | Discussions thread
qianp2k Forum Pro • Posts: 10,350
Re: A bit more help.

joger wrote:

sorry - the crop sensor lenses are specifically better in lP / mm - which is no surprise - with smaller lenses and smaller length and maybe easier manufacturing (which bay be part of the total offering)

In absolute values FF trumps easily the crop format - it is funny that people try to argue differently - the bigger format ALWAYS trumps the smaller format - I was using a Plaubel 5x7 large format camera and it easily rivals all digital cameras I've ever seen.

The lenses only resolve some 30 lP/mm at mtf50 but when you have 170x120 mm sensor size and the sensor is a b&w ISO 100 firm you get enormous detail and really huge file sizes of the scanned field that have details where my DSLR will never get to.

In absolute term the bigger sensor plus the appropriate lenses wins in terms of images quality.

There are other aspects to consider like size (My Plaubel was big and had 40 pounds) and of course convenience aspects.

I have yet to see a good 7D shot with whatsoever lens that is anywhere near to the 5D II shots I do but if that happens a new sensor for FF might be on it's way too.

I will only by a crop sensor for very specific task but I will not buy it because of it#s superior images quality

You're free to belief that of course - I tend more to a bigger sensor size e.g. by shifting and stitching and recombining images to get more (virtual) sensor size.

I will never buy a smaller sensor because i think I get more in absolute terms - that's against basic physics

Exactly. Bigger sensor, better IQ, that's no much argument there.   Why some top salons still use MF/LF cameras to take model photos?

I still have not seen 7D/60D with 17-55 or 15-85 can match IQ from 5D/5D2 with 24-105L no mention 24-70L II when view both at 2000-pixel wide or more. I am still waiting see anyone can post a 100% 7D face snapshot (without any excessive processing to smear details) as I did from 5Dc. I only heard lots of talking but not tangible photos really can convince us in pure IQ.

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