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General photography questions and answers: Discuss crop sensor...this question has probally been posted before now, but I have searched and can not find an answer, what is ...
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Old 06-09-2009, 15:31   #1 (permalink)
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crop sensor

this question has probally been posted before now, but I have searched and can not find an answer, what is the difference (picture quality) between crop sensor and full frame and are there any dissavantages using crop sensor which I believe is less than the old 35mm format.
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Old 06-09-2009, 16:53   #2 (permalink)
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Re: crop sensor

I will use this as an example.

This was taken on DX (crop) mode at 70mm



This one taken on FX (full frame mode) again at 70mm.



The difference is clear. However, with the D3, shooting at FX is 12.1mp - the DX mode reduces the image to a mere 6mp. As for picture quality, I'm not sure. FX mode is something like 4200 pixels across the widest edge, DX I think around 3000 (based on large/fine setting).

Others may have additional input on this one that may be helpful.
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Old 06-09-2009, 17:10   #3 (permalink)
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Re: crop sensor

Full frme will always give the best quality, but depending on what you are going to be shooting, most people will be more than happy with the quality that a crop sensor will give. For sports, full frame cameras might not be fast enough and full frame lenses are also way more expensive than DX ones.

Full frame really excels with portraits, and most serious wedding photographers will also use full frame, but as I said, most people find that modern crop sensor cameras will be more that adequate for their use.
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Old 06-09-2009, 17:36   #4 (permalink)
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Re: crop sensor

thanks for the quick reply guys. although it would appear to my eye that the full frame has given a larger surface area the crop is of better quality, but so many other factors come into play and every photo is unique in it's own right. and now you mention it, it's obvious that the full frame will be a larger file requiring more process time and thus slower

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Old 06-09-2009, 17:59   #5 (permalink)
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Re: crop sensor

I don't see the Stephen King IT book
LOL it's one of my favorites
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Old 06-09-2009, 18:48   #6 (permalink)
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Re: crop sensor

it's there....just not in the pic! (i think the wife has every book written by mr king)
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Old 07-09-2009, 15:05   #7 (permalink)
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Re: crop sensor

A fundamental issue is that each pixel in a full frame sensor (assuming similar resolution) collects 5 times the amount of light (Compared to APS-C) thus giving a cleaner image and more accurate colour but, in particular, a significant improvement in low light (high ISO) performance.

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