How big is a flatbed scanned 8x10?

[Bill_1856]

How big is the file of an 8x10 scanned on a flatbed such as a V700? Would 4x5 and 5x7 be proportional?

[karl french]

Mine are small. I only scan them at 800 ppi. Though I do scan at 16bit. File sizes end up being about 93 megabytes for black and white scans.

[Ed Bray]

I scan my 8x10s at 1200dpi in colour and the filw size is circa 680MB, but 8x10s are placed on the scanner glass and use the lower resolution lens using the wide-transparency setting I have found that to get the best scan I needed to purchase a piece of A4 anti reflection glass to press it down onto the platen, with 4x5 or 5x7 I can wet mount onto a calibrated 'better scanning' adjustable holder and using the higher resolution lens I can scan at 2400dpi or higher giving me the same file size of circa 680MB but with a slightly better scan due to the wet mounting.

The main reason for me using 8x10 in preference to 5x7 is the opportunity to produce nice sized contact prints although the availability of additional film stocks is also nice. Other than that, the 5x7 wins in perhaps the important aspects of size, weight & cost.

[Bill_1856]

Thanks.
Ed, what is a "better scanning" adjustible holder?

[welly]

Thanks.
Ed, what is a "better scanning" adjustible holder?

More info here: http://betterscanning.com/

[Bill_1856]

More info here: http://betterscanning.com/

Thanks.
I didn't realize that the film had to be scanned in a liquid.

[Tony Evans]

Bill,

You have the option of Dry or Wet scanning. There is no "had to" here, but Wet Scanning is reputed (?) to give a sharper scan. My experience (V700) is that it does or at least appears to improve micro-contrast.

[Daniel Stone]

Bill_1856,

You can bet 'yer britches wet mounting improves scan quality.... I only dry mount scan to proof, and decide which pieces of film to commit to a drum scan.

definitely check out wet mounting, and with Kami fluids, there's basically NO cleanup needed, it dries up quickly. No mess, no fuss.

-Dan

[Bill_1856]

Bill_1856,

You can bet 'yer britches wet mounting improves scan quality.... I only dry mount scan to proof, and decide which pieces of film to commit to a drum scan.

definitely check out wet mounting, and with Kami fluids, there's basically NO cleanup needed, it dries up quickly. No mess, no fuss.

-Dan

Next question: What's a "Kami" fluid? How is is used?
After 60+ years in Lf, I feel like starting my threads "Newbee wants to know...." :-)

[C. D. Keth]

Kami is a brand of fluid made specifically for wet mounting film to be scanned. I don't know what exactly is in it but it's largely alcohol.