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Old 29-06-2017, 06:57 PM
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blink138 (Pat)
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false flats?

hello members
is this a legit way of doing flats?
pat
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Old 29-06-2017, 06:58 PM
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oops obviously i took the photos from that lens!
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Old 29-06-2017, 07:01 PM
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You might just want to put a sheet of white paper over the front to keep diffuse it and it'll also help with removing the screen refresh/cycle rare
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Old 29-06-2017, 07:23 PM
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thanks colin............ no other problem foreseable?
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Old 30-06-2017, 10:20 AM
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The only other thing you may have to watch out for is making sure that you're not having the red channel being undercorrected as the screens "white" is blue biased.
Probably won't be an issue as long as the flats are well exposed
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Old 30-06-2017, 10:24 AM
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You can simply take a shot at clear sky before sunset. Tracing paper can additionally even out possible small clouds...
Flats will be converted to and treated as BW in DSS.
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Old 30-06-2017, 10:37 AM
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multiweb (Marc)
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Quote:
Originally Posted by blink138 View Post
hello members
is this a legit way of doing flats?
pat
Absolutely. It's no different than using an EL sheet.
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Old 30-06-2017, 11:53 AM
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thanks a lot guys
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Old 30-06-2017, 12:26 PM
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colour etc doesnt matter for flats, but yeah a sheet of tracing paper to diffuse would be good. One problem you might get this way is artificial vignetting thats not present if you took flats unfocused off the sky.
besides flats, darks and bias frames are NOT required, and for most people will make little difference to their final image. so dont fuss too much.
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