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10-25-2016, 09:58 AM   #1
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Bad scan or bad exposure? Scanning aerial shot of ice

I am working on scanning a two year backlog of Velvia 50 I've shot and all was well, till I hit a challenging roll - aerial shots of ice sheets. I remember the ice being more glistening and the water a little darker - and couldn't mount my polarizer (filter ring v slipstream) but these shots look especially flat. Since I haven't scanned in a long while, does this appear to be a shot where I screwed up the exposure not accounting for ice reflectivity, or is this the scanner exposing poorly?

I used the DiMage's autoexpose on one shot and then shut it off in another and they seem to be close enough to suggest it was my exposure and that I should chug along and try to salvage in post-processing. (I think I corrected for this later on but only halfway through the roll )

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10-25-2016, 10:27 AM   #2
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Your original slides should be your guide. If you have access to a light table and loupe, direct examination should indicate the amount of highlight detail as well as color balance/intensity. Tweaking the scanner to capture the nuance of the original may be difficult, but should be attainable.


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10-25-2016, 10:41 AM   #3
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Agreed with Steve. Are you using VueScan with the DiMage Scanner? I've often found that the profiles for specific films like Fujifilm Velvia scans worse than if I just use the Generic profile and then do PP in PS. Are these aerials 35mm, 645 or 67?
10-25-2016, 10:59 AM   #4
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35mm Velvia, scanned with the DiMage Scan Utility (never got Vuescan). I've always wanted to do the most basic scan, archive the film and then play in photoshop, so I did just use default profile, 16 bit, autofocus/expose. From Haleakala to the Grand Canyon this usually works fairly well but the ice trips me up

Thanks for the replies.

10-25-2016, 12:23 PM   #5
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Yes, too bad you couldn't get the polarizer on. I think it is the exposure and I suspect a ton of UV that affected the exposure. Do you completely trust the lab that processed this? E-6 processing takes much more precision and especially ISO 50 with its very small exposure latitude. I usually bracket a lot with 50 and 100 ISO reversal films.
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