stockriderman wrote:
100% crop of 12mp should not be any sharper than 100% crop of a 21mp. This is the reason why reviewers do this so call \"mistake\" I don\'t want to buy a 21mp camera so that it would only be as sharp as 5D at 12mp. I want it to be just as sharp at 100% crops as well. Otherwise, why not just re sample the 5D images via photoshop!!
OP,s view doesn\'t make any sense
Well, if your goal is to compare 100% crops, then yes, you are right. Brainiac\'s view doesnt make sense.
But for most people, the goal is prints. With any image, the goal is a certain sized print - be it 4x5, 16x20, 4\'x6\', billboard or whatever. When you compare 2 cameras, what you are trying to figure out is how well the prints from the 2 cameras would match up (at that chosen print size).
In such a case, it makes more sense to compare the 2 cameras with one image up-rezzed to the other (not down-rezzed - that destroys information and also leads to blindness and hairy palms, I think). This gives you a better idea of how the image quality from the 2 cameras matches up.
It is a bloody shame that camera reviews today seem to be driven by the 100% crowd, most of whom dont appear to actually make large prints or actually use the camera in real-world conditions. It affects those few remaining people who actually seem to care about images and prints, b/c it forces manufacturers to re-allocate their priorities to appease the pixel-peeping vocal minority/majority.
I\'ve already ranted about this in another thread, but I read these posts from people who need 100% weathersealing and wonder if they have actually ever shot in the rain - what they do with water droplets on the front element and viewfinder window, for example. And for those people who apparently shoot fast-developing action and at the same time want AF points on the edge of the image frame (!!!). My best-selling action shot to date was taken with an Elan IIE (3 AF points, 3fps).
Anyway, I digress. Coming back to the subject - I hope it makes sense now why 100% is not the best arbiter of IQ.
Vandit
Sep 19, 2008 at 03:04 PM
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