Vuscan output colour space for b&w negatives

[thomas_bruce_dyrud]

<p>Hi<br>

I've been scanning for about a year now and I think I'm starting to get a hang of it. There is still some things I'm not sure about. One is what colour space should I use when I output? I tried to goole, but there is so many different answers. At the moment I use colour space "grey". Is this ok or should I use Adobe RGB or Pro Photo RGB? I output as a "TIFF file" and have the "TIFF profile" checked. Is it important to have the "TIFF profile" checked? I was trying to get a gamma of 2.2.<br>

I use Lightroom CC to edit my scans.<br>

I recently upgraded from an Epson V600 to a Plustek Opticfim 120 and when I scan my b&w negatives Vuescan always scan the negative twice. Is this normal? I can't remember Vuescan doing that with the Epson V600. I have "multi pass" and "multi exposure" turned off. I can't uncheck infrared when in 16bit grey so I assume that it is turned off.<br>

Hope someone can help.<br>

Thanks!</p>

<p>Thomas</p>

[digitaldog]

<p>Nothing to be gained from ProPhoto RGB with an RGB document that's all neutral RGB values. </p>

[peterbcarter]

<p>The scanning twice is probably due to your setting of infra read clean. It should be set to none while scanning true B&W film.</p>

<p>While Andrew is technically correct for only doing B&W scans, I scan colour too. I use prophoto and always turn on my tif profiles. They are of no consequence when not needed and I don't have to remember to turn them on when needed.</p>

 

[thomas_bruce_dyrud]

<p>Thanks for your reply.<br>

There is no option to turn on or off infrared scan in Vuescan when scanning b&w negatives. Only in color negatives and positives. I just got a new computer and it makes two passes on the new one with software and driver newly installed aswell.<br>

By using "grey" as colour profile do I loose some informtion or editing ability in Lightroom or Photoshop compared to Adobe RGB or Pro Photo RGB or is it better since the negatives are b&w. In Photoshop it says that the profile is called Gray Gamma 2.2<br>

Thanks for helping!</p>

[digitaldog]

<p>If you scan color, then yes, ProPhoto is what you want! Here's why:<br>

<em>The benefits of wide gamut working spaces on printed output</em><br>

<em>This three part, 32 minute video covers why a wide gamut RGB working space like ProPhoto RGB can produce superior quality output to print. </em><br>

<em>Part 1 discusses how the supplied Gamut Test File was created and shows two prints output to an Epson 3880 using ProPhoto RGB and sRGB, how the deficiencies of sRGB gamut affects final output quality. Part 1 discusses what to look for on your own prints in terms of better color output. It also covers Photoshop’s Assign Profile command and how wide gamut spaces mishandled produce dull or over saturated colors due to user error. </em><br>

<em>Part 2 goes into detail about how to print two versions of the properly converted Gamut Test File file in Photoshop using Photoshop’s Print command to correctly setup the test files for output. It covers the Convert to Profile command for preparing test files for output to a lab.</em><br>

<em>Part 3 goes into color theory and illustrates why a wide gamut space produces not only move vibrant and saturated color but detail and color separation compared to a small gamut working space like sRGB. </em><br>

<em>High Resolution Video: http://digitaldog.net/files/WideGamutPrintVideo.mov</em><br>

<em>Low Resolution (YouTube):

[peterbcarter]

<p>The option is under the filter tab, in professional mode.</p>

[thomas_bruce_dyrud]

<blockquote>

 

<p ><a href="/photodb/user?user_id=361342">Andrew Rodney</a><a href="/member-status-icons"><img title="Subscriber" src="/v3graphics/member-status-icons/sub10plus.gif" alt="" /><img title="Frequent poster" src="/v3graphics/member-status-icons/1roll.gif" alt="" /></a>, Jul 21, 2015; 06:32 p.m.</p>

 

<p>If you scan color, then yes, ProPhoto is what you want! Here's why:<br /><em>The benefits of wide gamut working spaces on printed output</em><br /><em>This three part, 32 minute video covers why a wide gamut RGB working space like ProPhoto RGB can produce superior quality output to print. </em><br /><em>Part 1 discusses how the supplied Gamut Test File was created and shows two prints output to an Epson 3880 using ProPhoto RGB and sRGB, how the deficiencies of sRGB gamut affects final output quality. Part 1 discusses what to look for on your own prints in terms of better color output. It also covers Photoshop’s Assign Profile command and how wide gamut spaces mishandled produce dull or over saturated colors due to user error. </em><br /><em>Part 2 goes into detail about how to print two versions of the properly converted Gamut Test File file in Photoshop using Photoshop’s Print command to correctly setup the test files for output. It covers the Convert to Profile command for preparing test files for output to a lab.</em><br /><em>Part 3 goes into color theory and illustrates why a wide gamut space produces not only move vibrant and saturated color but detail and color separation compared to a small gamut working space like sRGB. </em><br /><em>High Resolution Video: <a href="http://digitaldog.net/files/WideGamutPrintVideo.mov" rel="nofollow" target="_blank">http://digitaldog.net/files/WideGamutPrintVideo.mov</a></em><br /><em>Low Resolution (YouTube):

 

 

</blockquote>

 

Thank you! Very helpful. But I'm mainly scanning b&w negatives thats why I asked if "grey" was ok to use as a colour space or if I'm better off with one of the others :)

 

 

<blockquote>

 

<p ><a href="/photodb/user?user_id=4575983">peter carter</a><a href="/member-status-icons"><img title="Subscriber" src="/v3graphics/member-status-icons/sub7.gif" alt="" /></a>, Jul 21, 2015; 08:41 p.m.</p>

 

<p>The option is under the filter tab, in professional mode.</p>

 

 

</blockquote>

Yes I know, but the option is not there anymore when scanning b&w negatives. It only shows up when I'm in colour negative or positive mode :)

 

[peterbcarter]

<p>Yep, you are right. It's a new thing.</p>

[digitaldog]

<blockquote>

<p>Thank you! Very helpful. But I'm mainly scanning b&w negatives thats why I asked if "grey" was ok to use as a colour space or if I'm better off with one of the others :)</p>

</blockquote>

<p>Do you want a single grayscale document or a three channel RGB document? If the former, the RGB working space is moot. If the later, there's no color gamut issue, any RGB working space would do the job. </p>

[mendel_leisk]

<p>I always output 16 bit per channel r/g/b tiff format Vuescan raw file for initial output. This is regardless of the film being b/w, color negative or slide. The only variation is the r/g/b proportions for color negatives: by telling Vuescan your source is c/n it'll shift r/g/b balance for a rough adjustment of the orange mask.<br>

I then clean and crop that file, and if it's b/w negative source I output a finished gamma jpeg in greyscale, via Vuescan's scan from file function.</p>

[AlanKlein]

<p>I use a V600 for color and BW (I use the Epsonscan software to scan flat and adjust in post using Lightroom and/or Elements.) What do think of the Plustek compared to Epson?</p>