10 Darks or more
10 Darks or more
Hello: It is advisable to make a Dark Master with more than 10 shots ... 20 for example, there is some real improvement.
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Re: 10 Darks or more
Hi,
the noise in the master dark goes down as the square root of the number of frames, so
10 frames reduces the noise by about a factor of 3
20 frames by a factor of about 4.5
50 frames by a factor of 7
100 frames by a factor of 10
so, the more the better, but it doesn't take long for the diminishing returns to kick in meaning that 20-30 is probably about as many as you want.
cheers,
Robin
the noise in the master dark goes down as the square root of the number of frames, so
10 frames reduces the noise by about a factor of 3
20 frames by a factor of about 4.5
50 frames by a factor of 7
100 frames by a factor of 10
so, the more the better, but it doesn't take long for the diminishing returns to kick in meaning that 20-30 is probably about as many as you want.
cheers,
Robin
Re: 10 Darks or more
I use 50 darks these days but you will find a wide variety of opinions on this.
50 is a good trade-off for time versus quality based on Robin's figures.
The key to quality is temperature matching lights and darks.
See Brian's post viewtopic.php?f=16&t=1090
A couple of my images with 50 darks applied: 50 minutes of dark collection for these images.
Dave
50 is a good trade-off for time versus quality based on Robin's figures.
The key to quality is temperature matching lights and darks.
See Brian's post viewtopic.php?f=16&t=1090
A couple of my images with 50 darks applied: 50 minutes of dark collection for these images.
Dave
Re: 10 Darks or more
Hello: Thanks for the explanations, understood. Greetings.