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Unsharpness, is this bad?


HaraldL

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In scanning slides with it8 calibration it did cause me a lot of trouble to get a nice fading of unsharpness especially in dark areas. In the m8 picture below I took out a detail that would have caused me some sleepness nights. I would prefer a smoother fading instead of this somewhat sudden demarcation. I do think that it would have been nicer with slides. I'm not able to manage this unsharpness right now. What do you think, is this typical for digital files? Is it a matter of profiling? Or do you think it's very much ok and so acceptable?

 

Harald

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Try one of Jamie's or Edmund's profiles, see what you like best.Although transition of sharpness is basically a function of the lens, different profiles (or different films for that matter) render differently. Having said that, the imprinting of the image on film is a three-dimensional process, as film has a thickness. On a sensor this is two dimensional, as a sensor approaches a plane surface. This makes the transition of sharpness more sharply defined on a sensor. Maybe this is what you are seeing.

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Matter of lens and aperture IMHO.

Did you use the current Summicron 50/2? At f/4 or...?

 

Very well, yes current 50/2. I'm not sure about aperture, I tend to use wide apertures, because of shutter speed and depth of field, so unsharpness.

 

Harald

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Harald,

 

I suspect many variables are at play here.

 

My first reaction would be to increase the distance between subject and background to achieve what I think you are aiming at. But of course close control over aperture and other variants are vital as well. Without locking them all down and varying only one, you will never know.

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