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Showing posts with the label optics

The Larger the Format the Better the Image Quality

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The largest astronomical telescope is the Gran Telescopio Canarias in Spain. It has an effective aperture of 10.4m in diameter. The larger the aperture, the better the resolution. Even in a post-truth world you still cannot overcome the limits imposed by physics. This brings us to a widespread delusion amongst photo enthusiasts today. Many think that the sensor resolution on their cameras can be increased infinitely. People think that at the present rate of exponential rise in digital sensor resolution that the sky is the limit. Soon we may get smartphone sensors that reach 100MP in resolution, 35mm format sensors that reach 100TP (terapixels) etc etc ad infinitum. But there is a problem. It is called the lens. You can increase the bandwidth of the digital component all you want but you have to increase the size of the lens to go with that. If you wanted to make use of a camera sensor with 100TP in resolution, you might need to mount a lens with a nice 10-metre aperture diamet...