![]() ![]() ![]() Increase the area, and things will average out much smoother.With innovative features like a color palette system, patterns, and high-zoom support, Pixen packs all the tools pixel artists need in an intuitive, Mac-native interface. This would also limit the useful pixel smallness to around 0.5um2.Īlso, since sensor pixels are in the end photon counters, the smaller you make them, the steeper the "steps" in the count become - in the most pathological case, in very low light, it is up to random chance whether two or one or zero photons will hit the pixel - which would practically turn the output into white noise. ![]() 1000lp/mm, will never do more than 2000 pixels in a row per mm - less for red light. An f/2 lens has is diffraction limit for green (relative short wavelength!) light stated at ca. Also, added optical structures (color filters, microlenses) over the sensor will likely misbehave in unexpected ways.Īlso, the absolute possible resolution of lenses is limited by diffraction, no matter how you scale their size down. Similar limits apply to optical microscopes. If you end up with pixels smaller than the wavelength of the light you are using photographically ( 0.3-0.8um, so around 0.5um2 ), you will not gain useful resolution. There are physical limits to how small you can make the pixels. For example, 24 megapixel full frame camera takes better pictures than 24 megapixel crop sensor camera, the reason being that the pixels on the full frame camera are larger and don't magnify lens limitations as much. They are not optimized for image quality but rather optimized for low sensor production costs and small camera size.Īnything below 3 µm or so is lens limited in practice. They show values like 1,4 µm Pixel, or 1,55 Pixel.Īll of these values are way too small. So, my main point by comparing these moon shots is to demonstrate that even though smaller sensor can easier have longer telephoto reach, there's a limit to how small you should make the pixels. Unfortunately, they made the pixels so small that the small pixel size is starting to reduce resolution due to effects such as diffraction. The ability of the P1000 to zoom to 3000mm equivalent is created by making the sensor very small, thus making the pixels very small. Here is a picture of moon with a small sensor camera, CoolPix P1000, that zooms up to 3000mm equivalent ( source): Here is a picture of moon with 400mm focal length on full frame: ![]() The latter is cheaper, and using the former with long telephoto reach means you just crop the final image, making most of the 61.44 million pixels unused.īut anyway, there is a limit to how small it makes sense to shrink the pixels. To achieve 3.75 µm x 3.75 µm pixels, you can buy a full frame camera with 61.44 megapixel resolution, or a crop sensor camera with 24 megapixel resolution. For example, full frame commonly has 6 µm x 6 µm pixels with 24 megapixel resolution, whereas crop sensor could very well have 3.75 µm x 3.75 µm pixels. Then you can get long telephoto reach with smaller lenses. When taking photographs of very distant objects such as moon or birds, slightly smaller pixels than commonly present on full frame sensors might be beneficical. If I got it right, a bigger sensor is better. ![]()
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