12/2/2023 0 Comments Crop sensor vs frame ratio![]() Run the cleaning process before a long imaging session. Set up the camera toĪutomatically clean the sensor when it is turned on or off. Vibration of the filters over the sensor). Several cameras have been multiple times to the dusty SerengetiĪnd other locations around the world, and never a dust problem.Ĭhoose models that have a self-cleaning sensor unit (ultrasonic All have shutters and I have never once had to clean any of the 7D Mark II, 6D, 6D Mark II (2 bodies),ĩ0D and R5. If there is no shutter, the sensor is exposed and will attract dust. Recent models, which have smaller pixels, tend to have less pattern noise Pixels to form a larger pixel gives about the same total signal as a However, adding signal from multiple small Online one often sees the myth that larger Raw data see the links in this page: Image Quality and Filtered Raw For a partial list of camera models known to filter Variations in filtered raw data varyįrom deleting stars to turning star color to green or magenta (there are no green Low signal uniformity, and lower pattern noise.Īvoid cameras that filter raw data. Quantum Efficiency (QE), lower noise floor, lower dark current, better The 80D dark current is the same as the Canon 7D Mark II, see 7d2 dark current here and is excellent there are many 7d2 images in my astro gallery.ĭigital cameras continue to improve even over the last few years. The Canon 80D is an excellent camera, does not filter raw data until extremely high ISOs not typically used in astrophotography (see the above link). Here is a list of links to cameras that filter raw data. I could not find info about the 7200, but other models around that one do filter. Some Nikon cameras filter raw data, typically changing star colors. The downside of the D7200 for astrophotography is that it's much heavier and doesn't have an adjustable screen which makes it a pain to use, and you can get it on eBay between $400-$500, lower if you're lucky It has a built in autofocus motor and indexing tab, which will let you use any vintage Nikon lens made since 1977 instead of only the new ones which will save you a lot of money. For both astro and daylight photography, the D7200 has far more professional features and also has low noise. For pure astrophotography, the D5300 has very low noise, a flip screen, is lightweight, and can be bought used (unmodded) for under $300 on eBay, downside being a lack of professional or intermediate features (not needed for astro). For specific recommendations, I own a Nikon D7200 and recently got a modded D5300. There are plenty of small differences between the two, but either way you'll get a good image, and crop sensors will give you that good image for a much lower price. The crop factor pairs nicely with shorter refractors (80mm and below) for a good fov for most DSO, and usually gives a well sampled pixel scale for average seeing conditions. To keep it simple without typing an essay (and repeating what others have said), APS-C is what I personally see most people use, and it's what I use as well.
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