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--More mpix does not automatically translate into more resolution under all levels of mpix, all lenses, all ISOs, and under all shooting conditions. There is a law of diminishing returns that operates, and the question is what level of mpix is optimal for your use. This why the pro models of Canon and Nikon do NOT feature the highest levels of mpix. More mpix automatically equals more resolution only on a laboratory test-bench, not in real life.
Using a camera on a tripod, with the mirror locked up, with self-timer release, with live view magnification, with the best possible lens at its best aperture, with a high shutter speed, at low ISO will yield more resolution per mpix. But the same camera used at a wedding or to shoot any kind of live event will not get you more mpix and may well cause you to lose shots because of things like increased motion blur from subject or hand movement, and the need for higher shutter speeds.
Similarly, even the best lens used at it maximum or near-maximum aperture will not produce higher resolution because the lens at a wider aperture cannot resolve the level of detail that the sensor can record.
Similarly if you are using a small aperture with the best lens because diffraction will limit resolution.
Similarly if you are using higher ISOs, because the increased need for noise reduction will smear the higher resolution and smaller and more numerous mpix produce more noise requiring more noise reduction.
In such situations, the 5d3 will usually produce more actual resolution in the final image and much more photographic flexibility in getting the image you want in the first place.
This is why Henri Cartier-Bresson started to use 35mm in the first place--because of the kinds of situations he wanted to shoot in: The constraints and technical practices necessary to get larger-format quality destroyed the ability to get the image in the first place.
This is what DPR's review of the d800 points out when it writes and repeatedly emphasizes that "inordinate lengths" are required to actually get the increased resolution that the d800's mpix are capable of. Many other reviews have made the same points. Luminous Landscape even recommends a focusing loupe, presumably because the live view focusing magnification on the d800 is unusable.
And this is why pro models costing twice as much as the d800 do not feature the d800's levels of mpix--because they make the camera less flexible and usable for making most images.
Nikon did not put the 36 hex on their pro models, but used it to aim at amateurs/prosumers who would be more taken with a big mpix count without really understanding what it means in practice. This is what DPR was repeatedly emphasizing in its d800 review by pointing out the very unusual practices ("inordinate lengths") you need to employ in order to not smear a d800 image.
There is a sweet spot for mpix. More automatically equals better only in advertising aimed at amateurs.
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Peter
--And this is why pro models costing twice as much as the d800 do not feature the d800's levels of mpix--because they make the camera less flexible and usable for making most images.
It is obvious that there are clueless non-professionals and clueless professionals in this forum. There are also knowledgeable folks, professionals and non, on both sides of this debate. Your comments show a disturbing level of ignorance for the intelligence of the audience you are attempting to address.More [MPs] automatically equals better only in advertising aimed at amateurs.
Funny you should say that. The last time I took the Hubble Telescope to a shoot, the model said it was too intimidating and walked outyou are never at the top of the food chain in photography unless possibly you are shooting with the Hubble Telescope.
I haven't printed to paper since 2005 so admittedly I may be a little out of touch with that medium but I do not think so. For my own consumption, I display my images on an NEC 2690 at 1800x1200 pixels. My viewing distance for sustained study of the images ranges from 12 to 18 inches. The additional detail afforded by 21 MP over 12 MP was clearly evident.You say you can see a difference at that small size? Yeah suuuuure...... you do!
This is a curious approach that does not deny the additional detail but claims it is insignificant or irrelevant. Can you give an example of what constitutes insignificant detail in terms of landscape photography because most of us pursuing this endeavor seem to have been pursuing the wrong goals then?There is one other reason the pro cams do not have more pixels. Only certain level of details is related to the overal meaning of the image, but much much smaller details are irrelevant. I define Image Domain as a full scope of details relevant to the meaning of the image. As such it is measured in mp and depends on the type of photography and display. It may vary from a very few mp in some photos, like mostly capturing bokeh, to 100 mp in forensics applications. But in general photography it is about 16 mp plus / minus 20% for portraits or landscapes. So 20 mp looks like a good sweet spot number from this standpoint as proven by success of 5D2 and other cams in this range.
Good one.But if your specific type of photography requires more, this is fine. It just means that you have a good reason to show the level of subject details normally invisible by the naked eye.
cameraphone is P&S to me.I never mentioned P&S but I was responding to someone who did.Since you mentioned P&S, OP title maybe sometime true among different formats of sensors if he didn't mention D800 and 5D3For example it's not true that a 16mp P&S will have more resolution than a 12.8mp 5D. Does this Nokia 808 has more resolution than D800? LOL.
Even a Nokia 808 pureview cameraphone has 41 MP
technology has moved on & left you behind.
Really? Can you show some real world photos?The resolution is 41 MP fact.
Does it have better Image quality than the D800 , no
Does it out resolve the D800 , probably not
Does it out resolve the 5D , very likely.
Has it better Image quality than the 5D , maybe.
What's the standard of a GREAT photo? I have not seen any cameraphone takes GREAT photos on my standard of great photos.Does it take great pictures for a camera phone, yes
Are the 41 MP producing crap pictures , no
It does, all the time (assuming a "proportional" AA filter and everything else the same).More mpix does not automatically translate into more resolution under all levels of mpix, all lenses, all ISOs, and under all shooting conditions.
--would have been interesting to hear you argument against your concerns about pixel count. The Adams note was simply anecdote from the ancient past - it is nothing to be "impressed" about.
--I'm impressed!!!Ansel Adams was very conscious of shutter speed and subject matter. He generally found that a maximum of 1/200 sec was adequate for the majority of scenic work although, on rare occasion, used 1/500 when photographing in windy conditions or moving water and the subject was "close by" - at least that what he told me when I visited him in 1972 shortly after I acquired my Linhoff and he gave me some recommendations for lenses.
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tony
http://www.tphoto.ca
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Peter
tony
http://www.tphoto.ca
Peter you don't own a 5DIII and you don't own a D800.On the argument--all I am saying is something that is actually non-controversial--more mpix don't always lead to higher resolution because of an enormous variety of factors that can limit the resolution that is actually achieved. This is no more than DPR said in its review of the d800 when they emphasized repeatedly that one needed to go to "inordinate lengths" of technique to achieve the resolution that the d800 POTENTIALLY could produce. If you don't go to theose "inordinate lengths," you are unlikely to get the resolution, except on a hit-or-miss, lucky, low-percentage basis.
That is really all my post says.
If that was all you were saying, then you’re right, it would not haveall I am saying is something that is actually non-controversial--more mpix don't always lead to higher resolution because of an enormous variety of factors that can limit the resolution that is actually achieved.
Your problem is that you're extrapolating what DPR statedThis is no more than DPR said in its review of the d800 when they emphasized repeatedly that one needed to go to "inordinate lengths" of technique to achieve the resolution that the d800 POTENTIALLY could produce.
get the resolution, except on a hit-or-miss, lucky, low-percentageIf you don't go to theose "inordinate lengths," you are unlikely to
It is a mistery isn't it SharoN?Same as my 5DIII. I used identical technique with BOTH cameras and saw the D800's potential on many shots and many more shots where we cropped.
Why is this so hard for you to accept?
Yep.More mpix does not automatically translate into more resolution under all levels of mpix, all lenses, all ISOs, and under all shooting conditions.
no, no, no.But the same camera used at a wedding or to shoot any kind of live event will not get you more mpix and may well cause you to lose shots because of things like increased motion blur
--I just got a nice shot of a heron with my iPhone! (Lots of herons here in The Netherlands).
Steve