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09/14/2006 12:36:23 PM · #1 |
| What's a drum scan? And how is that different? (i.e. Expensive) |
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09/14/2006 12:47:25 PM · #2 |
| Are you asking in relation to getting one done or in relation to the cost of the scanner? |
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09/14/2006 12:56:16 PM · #3 |
typical scanners (these days) the scaning head moves across the object
drum scans the object moves (rotates) & the scanning head stays in one place
typically they are much higher resolution.
part of the concept is that the same elements are used to read all the the pixels so there is no inter pixel diff's
i have't heard if drum scanners are keeping up to technology or not -
extreemly large files though ...
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09/14/2006 12:58:00 PM · #4 |
| As far as I know (from a friend) the scanning labs in town (NYC) are booming (of course they all use drum scanners). |
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09/14/2006 01:19:03 PM · #5 |
What Ralph said: Drum Scanner is very high resolution, very precise. The original is mounted on a large-diameter, rotating drum, and the scanner head remains stationary. They make REALLY good scans, no kidding, if they are set up and maintained properly. They are the standard in the graphic arts industry. Flatbed scanners are not considered good enough for photoreproduction for magazines and such.
R.
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09/14/2006 01:34:51 PM · #6 |
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09/14/2006 04:35:39 PM · #7 |
| Drum scan is also a lot more expensive than a flatbed scanner. I believe the scans must also be wet, so that adds to complexity in use and maintenance. |
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09/14/2006 04:52:23 PM · #8 |
Originally posted by Raziel:
I believe the scans must also be wet, so that adds to complexity in use and maintenance. |
They are oil-mounted with special optically-clear oil, similar to what's used with microscopes.
Drum scanners (used to) cost in the six figures -- not like you current $49 flatbed scanner. |
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09/14/2006 05:06:19 PM · #9 |
| From what I hear here in NYC, magazines like GQ etc - I know someone who is an art director in one of these magazines - still prefer film photographs over digital for skin tone & c. Therefore, drum scanning is de rigueur. |
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09/15/2006 01:32:43 PM · #10 |
| your typical flat bed scanner $80-200 will give u a flat looking picture - a drum scan will produce a correctly recorded image from your tranny or photo |
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09/15/2006 02:52:16 PM · #11 |
Originally posted by Bobster:
your typical flat bed scanner $80-200 will give u a flat looking picture - a drum scan will produce a correctly recorded image from your tranny or photo |
You can still get a plenty crappy-looking drum scan if you don't have an experienced operator. They basically have available all the settings found in Photoshop's various adjustments -- Curves, Selective Color, etc. -- and they all have to be pre-set for each scan. |
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09/15/2006 02:56:57 PM · #12 |
| Another bennifit of the drum scaner is the constant scan rate, the moving arm/sensor in a flatbed scanner might not move at a constant rate and especially in the lod days create compressed or streched parts on the image, the drum scanners have a more fluid motion. |
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09/15/2006 03:51:32 PM · #13 |
Originally posted by GeneralE:
You can still get a plenty crappy-looking drum scan if you don't have an experienced operator. They basically have available all the settings found in Photoshop's various adjustments -- Curves, Selective Color, etc. -- and they all have to be pre-set for each scan. |
thats true.. but the place i use have an old school A2 scanner with a few knobs to set white blance etc.. |
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