Hi Ken, welcome to the list. A few quick thoughts.
o One strategy is to scan at the highest resolution and highest bits
per pixel once to create a master file with all the possible data you
can capture. This way you can make derivative files at smaller sizes,
etc. and "never" have to rescan the image.
o Do your tone and color correction on this master file, but don't sharpen it.
o When you want to print it downsample it to the appropriate size and
resolution and sharpen it for printing.
o When you want to display it on the web, downsample it to the
appropriate size and resolution, sharpen it for the web, then save as
JPEG with a medium level of compression.
o Save in TIFF in preference to BMP. Among other things TIFF can
support high bit (e.g. 48 bits/pixel) images, whereas BMP can't.
o The JPEG standard includes a lossless setting. Photoshop 6
supports it: set the quality level to 12. it will compress to, say,
1/3 of the original size. JPEG only supports 24-bit images.
o Do a Google search on Charles Poynton. He's the gamma guru. Gamma
comes into play in setting up your monitor, ICC profile-based color
management, and tonal correction with with a different twist in each
o VueScan is often spoken well of on this list.
o If you run Windows, look into Picture Window at
http://www.dl-c.com/ for a cheaper alternative to Photoshop that can
manipulate high-bit images.
At 9:59 PM -0700 20-10-01, Ken Durling wrote:
>Can you handle another newbie? (I heard that groan) ;-)
>OK, not entirely new to scanning, but just got my first film scanner -
>a Canon FS2710 that I got 2nd hand. Seems to be working fine.
>it's making me realize that I need to get into a whole other level of
>control and understanding of what I'm doing. Prior to this all my
>work - about 4 years of it - has been on a HP 5200C flatbed, with the
>bundled PhotoDeluxe and occasionally Corel Photo House. I've gotten
>pretty good at the basics. I've tried out Photoshop Elements and
>like it, but at this point am wavering as to whether I should get the
>whole PS6 package or if PSE would do it. IAny advice appreciated. I
>know you need to know more about what I want to be able to do.
>At this point I mainly am striving to just get the absolute best
>quality photo and then reproduction thereof that I can, given my
>budget, which is why I'm limited to 2720 dpi. Probably it will be
>fine for my purposes, which is mostly web-based right now, but
>eventually I'd like to make my own prints, up to 8x10, with a very
>occasional larger one. Don't have a photo printer right now, just an
>HP Color Inkjet, but will probably eventually get an Epson 1280 or a
>Right now I think most of my questions concern procedure with these
>large scans, which are new to me. I'd appreciate any tips no how to
>minimize loss when compressing to a jpeg. For example, Is there any
>substantial difference as to whether I save the original scan as a
>.TIFF or a .BMP? These seem to be the main options offered by the
>Canon software. I do have a trial copy of Vuescan, which I'm *very*
>impressed by so far, and will be going over to a full version of that
>probably, unless I'm convinced otherwise here! Vuescan seems to be
>able to handle different films much better.
>Another question when working with large files like this is at what
>point do you do most of your image adjustment? Do you do all your
>color balancing, sizing, and similar image property work on the .TIFF
>and then compress and run sharpen on the jpeg?
>So I have a lot to learn about color control, and have basically zero
>experience with color management. But I'm not doing a lot of printing
>just yet, so that's probably not my first concern. To start with I'd
>appreciate a good explanation of "gamma."
>Anyway, enough for now! Needless to say, some or all of the above may
>be able to be answered by links and FAQ's, please feel free to refer
>me to the requisite sources, I'm a good reader!
>If you want to critique what I've been doing thus far, I have a
>portfolio at photo.net:
>And a primitive template-based website. URL is in my sig.
>Thanks very much. I promise to try not to ask the 14,000 most asked
>Alternate e-mail: email@example.com
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