Here is M33 taken last Friday 10/13 from the Blue Ridge Parkway, NC. Clear sky, wind, and cold (34F).
Canon 20Da at ISO 1600, Takahashi E160 f/3.3. 20 frames 3 minutes each for a total of 1 hour were calibrated, aligned and stacked with ImagePlus. Result was enhanced (screen mask, blacks and whites, noise enhancement, SMI technique, high pass filter, saturation increased) with Photoshop.
I read a few times that it's better to be at ISO 800 than at ISO 1600 - better tonal range. Is it really the case, I mean, do you actually see a difference on the final picture between ISO 800 and ISO 1600, assuming everything else is the same ?
Canon 20Da at ISO 1600, Takahashi E160 f/3.3. 20 frames 3 minutes each for a total of 1 hour were calibrated, aligned and stacked with ImagePlus. Result was enhanced (screen mask, blacks and whites, noise enhancement, SMI technique, high pass filter, saturation increased) with Photoshop.
I read a few times that it's better to be at ISO 800 than at ISO 1600 - better tonal range. Is it really the case, I mean, do you actually see a difference on the final picture between ISO 800 and ISO 1600, assuming everything else is the same ?
Attached Image:
