4x5 scan with epson v750- Grain/ Noise

[mark_s.4]

<p>I scan my 4x5 negs with an epson v750 @ 2400dpi<br />Some days ago i recognized that the scans show a lot of grain/ noise in blue skys. not so in the clouds or other areas of the image.<br />Does anybody here have the same issue with the scanner? <br /> Any advices?</p>

<p>blue sky 100% crop:<br /><em><em><a href="http://www.bilder-hochladen.net/" target="_blank">Bilder hochladen</a></em></em></p>

<p>clouds 100% crop:<br /><br /></p>

[mark_s.4]

<p>blue sky 100% crop:<br>

<a href="http://www.bilder-hochladen.net/files/cw3i-15-d645.jpg">http://www.bilder-hochladen.net/files/cw3i-15-d645.jpg</a> </p>

<p>clouds 100% crop:<br>

<a href="http://www.bilder-hochladen.net/files/cw3i-16-3416.jpg">http://www.bilder-hochladen.net/files/cw3i-16-3416.jpg</a> </p>

[john_shriver]

<p>Sky is where C-41 films often show grain the worst. Which film are you scanning? The latest Portra 400 films (400 and the preceding 400NC-3) have much less grain in skies than earlier films.<br>

Also, try scanning at higher resolution, you may be encountering "grain aliasing".</p>