Everyone needs to remember what the advantage of a full frame sensor is and what it isn't. Here the trick about full-frame sensors: It is a crop factor, not a zoom factor. If you set up a Canon 10D and a 1D Mark II with 28mm lenses, you are still shooting at 28mm on the 10D, but the image is cropped to that of a 44mm lens. DOF and everything else are the same. For digital sensors, that is a good thing, because the sensors today are so good that they pick up all the flaw in a lens, magnifying the softness and vignetting at the lens edges. Cropped sensors basically just use the "sweet spot" on the lens. The real advantage to a FF sensor is that the sensor sites can be larger, and thusly record more light. However, even this can be worked around. Check out http://www.dpreview.com/news/0706/07061401kodakhighsens.asp to see what Kodak has come up with. FF is not always the best solution. I want a camera that takes the best image, feels best in my hands, and is reliable in tough conditions. I can work around a crop.
Mike thats just using a lens designed for a larger format, with DX or APS lens that not the case, you use the edge and you need to magnify more for the same print size, therefore there is a payback, That said I use a Nikon 24-120 on my d200 and the DX crop flatters what has been regarded as an indifferent performer on 35mm . The kodak sensor will be coming to a mobile phone near you soon.
nevertheless; To improve sensitivity and dynamic range you need bigger sensor sites, to improve resolution you need more of them and to help the optics you need smaller magnification, Do you see where i am going with this, sure there are some antagonistic factors particularly with current sensor design ie vignetting these can optimized out or controlled the others, the advantages, are just handed to you by geometry. Regards Andrew
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Everyone needs to remember what the advantage of a full frame sensor is and what it isn't. Here the trick about full-frame sensors: It is a crop factor, not a zoom factor. If you set up a Canon 10D and a 1D Mark II with 28mm lenses, you are still shooting at 28mm on the 10D, but the image is cropped to that of a 44mm lens. DOF and everything else are the same. For digital sensors, that is a good thing, because the sensors today are so good that they pick up all the flaw in a lens, magnifying the softness and vignetting at the lens edges. Cropped sensors basically just use the "sweet spot" on the lens. The real advantage to a FF sensor is that the sensor sites can be larger, and thusly record more light. However, even this can be worked around. Check out http://www.dpreview.com/news/0706/07061401kodakhighsens.asp to see what Kodak has come up with. FF is not always the best solution. I want a camera that takes the best image, feels best in my hands, and is reliable in tough conditions. I can work around a crop.
Mike thats just using a lens designed for a larger format, with DX or APS lens that not the case, you use the edge and you need to magnify more for the same print size, therefore there is a payback, That said I use a Nikon 24-120 on my d200 and the DX crop flatters what has been regarded as an indifferent performer on 35mm . The kodak sensor will be coming to a mobile phone near you soon.
nevertheless;
To improve sensitivity and dynamic range you need bigger sensor sites, to improve resolution you need more of them and to help the optics you need smaller magnification, Do you see where i am going with this, sure there are some antagonistic factors particularly with current sensor design ie vignetting these can optimized out or controlled the others, the advantages, are just handed to you by geometry.
Regards
Andrew