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Noise in Black and White Scan


Edwin Ho

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I have been scanning black and white negs using Canoscan 8800F with VueScan. The results are not good with much noise in the dark areas. Is this normal?

 

The two film types I scanned was Ilford FP4 Plus ISO 125 and Kodak BW400CN ISO 400.

 

Any suggestions are welcomed.

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I have been scanning black and white negs using Canoscan 8800F with VueScan. The results are not good with much noise in the dark areas. Is this normal?

 

The two film types I scanned was Ilford FP4 Plus ISO 125 and Kodak BW400CN ISO 400.

 

Any suggestions are welcomed.

 

An example would help to determine if normal or not. Some noise in the very thin areas of the negative is probably normal, but for me this is mostly apparent with night time shots, where you often have larger areas that are "underexposed" in the sense they are just plain black or show very little texture. This type of noise can be cured by moving the black point a bit into the curve to the right in the scanning software or in post scan editing. This will let the blacks appear like blacks and not noisy and greyish. On a properly exposed negative shot in normal daylight situation the shadow areas shouldn't show a significant amount of noise, but this can also depend on the quality and settings your scanning hard- and software. Scanning 35mm film with flatbed scanners is far from ideal in that respect.

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An example would help to determine if normal or not. Some noise in the very thin areas of the negative is probably normal, but for me this is mostly apparent with night time shots, where you often have larger areas that are "underexposed" in the sense they are just plain black or show very little texture. This type of noise can be cured by moving the black point a bit into the curve to the right in the scanning software or in post scan editing. This will let the blacks appear like blacks and not noisy and greyish. On a properly exposed negative shot in normal daylight situation the shadow areas shouldn't show a significant amount of noise, but this can also depend on the quality and settings your scanning hard- and software. Scanning 35mm film with flatbed scanners is far from ideal in that respect.

 

Here is one of the shots. The first shows noise in the dark area. I took your advice and moved the black slider in LR towards the right in the second photo.

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As Andy says, turn if off for 'traditional' b&w films. The IR clean sees the film grain as dust and goes bonkers*.

 

 

* that's a technical term.

 

Thanks, but there was also noise with C41 film as in BW400CN. I will rescan the Ilford FP4 Plus with IR clean turn off and see what happens.

 

BTW I have just posted a shot from Ilford FP4 Plus.It was scanned with IR clean on "light".

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As I have mentioned before, I am a newbie learning to scan by trial and error. I would appreciate if someone can post a suggested input and output list for traditional and C41 black and white negs. I do own "The VueScan Bible" by Sacha Steinhoff. To be quite honest there are times I really feel frustrated trying to understand and follow the instructions in the book. It will be nice if there is a "do list" for different type of scanning needs to help beginners.

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I never bought that book, simply because I've read that it is not good.

 

Instead I have found the free Vuescan Manual better. Following the steps will give you a useable scan.

 

Also, there's a really good eBook by Gerard Kingma which I found useful "The illustrated guide to film scanning". It goes into a bit more detail. Imo well worth the little cost.

 

Then don't forget to read Hamrick's help pages. There's a lot of info there.

 

Oh also check out the Color Perfect plugin and the info on the website.

 

Tim Gray's write-up is a pretty good starting point for b&w, I have found.

 

This tutorial is also useful, though slightly less user-friendly.

 

Here's another write-up for colour neg film

Edited by philipus
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