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  1. P

    Camera crop factor

    Actually the 40D has the most pixel density with pixels about 5.7u in size. The 1Ds III has pixel sizes of 6.4u. So if you are not worried about large FOV, then the 40D offers the best pixel density or true magnification. Adrian
  2. P

    Camera crop factor

    Its interesting that "crop factor" is not a misleading term, after all, that is exactly what the smaller chip camera's are, cropped, smaller chip. I just can't understand how this can be misinterpreted, but it has?! Its unfortunate that people like Art Morris (if he did say this), who is hugely...
  3. P

    Camera crop factor

    Tonky Your living proof that small pixels do help! The Canon camera's with the smallest pixels are the 400D and 40D (see my table earlier in the thread), even smaller than the 20D and I reckon the 40D is nearly the perfect camera for bird photography and fairly priced. Go get it ;) Adrian
  4. P

    Camera crop factor

    Comparing the 1DMkII and 20D is difficult because the 1DMkII has the bigger sensor, but also the larger pixel size, so in fact the 20D will offer better pixel density for an object and hence resolution, but the difference is not large. I would have the 1DMkII any day for its better focusing...
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    Camera crop factor

    Yeah, foveon technology has been around for years, but hasnt really taken off. I dont know how many Sigma's with foveon chps there are out there, but look at this forum and I havent seen one yet. Two points I would like to make about the Sigma SD14: 1. The resolution is quoted at 14MP, but...
  6. P

    Camera crop factor

    Mark’s Right, Somewhere with the onset of the digital world we have acquired these misleading words ‘crop factor’. PROFESSIONALLY IT MEANS NOTHING…. . more than the part reduction of an original. Correct, thats my point and my concern is that some think they are getting extra...
  7. P

    Camera crop factor

    Mark To start, if you are going to quote someone, probably best for credibility to get their name correct... Apologies for getting your name wrong I do not agre with this at all...the image is recorded larger in the final image if the device is smaller - that is what is viewed by the user...
  8. P

    Camera crop factor

    Mike I agree that 1.6x crop factor doesn't increase the focal length but what is magnification in the context of camera generated images if it is not recording a narrower field of view? Look at it the other way, lets ridiculously crop the image to just 10x10 pixels, does that improve...
  9. P

    Camera crop factor

    Yes the resolution of the total image is different, but the resolution of the bird in the image is not. Adrian
  10. P

    Camera crop factor

    Chris There is no doubt that someone with a 10D camera and good fieldcraft skills and getting their metering, focusing and composition right, will get a better picture than an uninitiated person with a 1Ds MkIII. So you have put this thread into perspective. However, field craft and other...
  11. P

    Camera crop factor

    Tannin Not sure I would agree that larger pixels are better. If that were really the case we would be seeing pixel sizes of 50-100 microns or bigger?? In fact ,all things being equal, then smaller pixels are better offering high pixel density and resolution. The disadvantage of smaller pixels...
  12. P

    Camera crop factor

    No, nothing to do with noise, its all to do with the pixel resolution. Thinning out as you put it, effectively reduces the number of pixels for the print. If you have cropped the image, then to make it an A3 size print, you will need to interoplate the pixels. If you look closely at the print...
  13. P

    Camera crop factor

    From what I can understand in this thread, everyone is saying that the small-sensor camera crop-factor does NOT in fact give your lenses more magnification, and that anyone who thinks that it does is a fool. RAH - This is what I was agreeing with, sorry for the confusion. I referred to a...
  14. P

    Camera crop factor

    OK Keith, I thought you were also saying this was bull**** I responded late last night:brains: Adrian
  15. P

    Camera crop factor

    Kevin - one more point, one of the leading Photomags recently compared a Pro camera to an amateur camera and the end results were surprisngly similar (cant remember which mag at the moment, I pay for too many!). Here are the dimensions for Canons camera's: EOS-1D MkII = Width = 28.7mm and 3504...
  16. P

    Camera crop factor

    RAH - Your assumptions are mostly correct, particuarly that a 1.6 crop does not improve magnification, just a smaller FOV. This of course is applicable given that both camera sensors have the same pixel density. Your examples of a small camera with a high pixel density and a larger camera with...
  17. P

    Camera crop factor

    If both cameras have pixel dimensions of 3264 x 2448, then the smaller chip camera must have smaller dimensional pixels and a higher pixel density. The smaller camera will yield better resolution of an object within the frame. Both camera's uncropped can be printed to the same size, but if you...
  18. P

    Camera crop factor

    Adrian - sorry I missed your explanation first time around but still trying to get my head around all of this. Until now I'd presumed upgrading from a 6 mpix to a 10 mpix camera would result in an identical image being recorded with the key difference being the 10 mpix camera would use 40%...
  19. P

    Camera crop factor

    Gordon, You are right to point out pixels per inch (or mm) or pixel density. A lot of ads refer to the resolution of a camera as the total number of pixels which is a bit misleading. Rob - I agree;)
  20. P

    Camera crop factor

    Gordon I agree with most of what you say, but not interpolation. The resolution of an object in an image will remain the same before and after interpolation. No post processing can change the inherent resolution in an image. Adrian
  21. P

    Camera crop factor

    Mark.. "Errrmmm...aren't you just explaining why there is a difference in field of view?" That would be another way of looking at it, but I wanted to avoid that statement to get a better understanding of resolution. You raised an interesting point regarding subject resolution and overall...
  22. P

    Camera crop factor

    Mark, one more point "From a traditional photographic point of view the effect of the crop-factor is very similar to extra focal length - it gives a larger subject size in the frame and decreased DOF at a given distance and aperture" I could do exactly the same for you in photoshop, just...
  23. P

    Camera crop factor

    Keith "This is great for nature and sports photographers as the net result is more real pull than before with no trade off of maximum F Stop loss" That is very naughty!! Adrian
  24. P

    Camera crop factor

    Mark, from a practical point of view, you are right, there would be little difference from your cited example, but not as a result of the crop factor. The pixel size for your1D2N is 8.2u and your wife's 20D is 6.4u, so the 20D will have 8.2/6.4 better resolution by a factor of 1.28x. So to have...
  25. P

    Camera crop factor

    Keith and Roy - sounds like we are shooting from the same barrell Roy - The truth will only come out with looking at an A3 print, something an internet forum cannot offer. Rob - The 1Ds has slightly larger pixels than the 40D and 400D at 6.4u, but an enormous FOV. This will be a great camera...
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