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Thread: Howtek 8000 Drum vs. Epson V850 flatbed scanners

  1. #1
    Alan Klein's Avatar
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    Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Here's a comparison between Howtek HiResolve 8000 drum scanner and Epson V850 flatbed.

    Negative is mine, Tmax 100, processed normal by North Coast Photo dip and dunk with Clayton F76+ developer (similar to Kodak D76). Taken on a Chamonix 45H-1, Schneider Symmar APO 150mm with B+W orange filter.

    I'm thankful to Peter Figen of Los Angeles who performed the scan on his Howtek. The scan was done at 4000 ppi using the native aperture (6.35 microns) for that resolution. Itís 16 bit RGB directly into Gamma 2.2 Adobe RGB color space. Peter provided both non-Adjusted and adjusted TIFF files. Note the adjusted version was changed only to set the clipping points using Trident. I did not sharpen either of his files.

    I did the scans on my V850 using Epsonscan. The first scan was done at 4800 ppi reduced to 4000 for the first comparison set. The second scan was done at 2400 as I found for some reason it was sharper after sharpening than the 4800 scan. That could be an error on my part. Both scans were adjusted to set the clipping points only. I used Color Comparison set but without Continuous Auto Color Control. Display gamma 2.2The second comparison set (2400ppi) was sharpened in Lightroom 6 purchased version. Sharpen 108, Radius .7, Detail 25. I used Irfanview for the comparison view reducing to approximately 1900x1200 for display on this site.


    Overview 1000ppi wide
    by Alan Klein, on Flickr


    Screen shot compares scanners at 100 percent beiore sharpening
    by Alan Klein, on Flickr


    Screen shot 2 compares scanners at 100 percent before sharpening
    by Alan Klein, on Flickr
    Last edited by Alan Klein; 18-Jun-2020 at 19:06.

  2. #2
    Alan Klein's Avatar
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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    The following is after sharpening the Epson V850 only. Howtek not sharpened; only clip points adjusted on both.



    Screen shot compares scanners at 100 percent after sharpening
    by Alan Klein, on Flickr



    Screen shot 2 compares scanners at 100 percent after sharpening
    by Alan Klein, on Flickr
    Last edited by Alan Klein; 18-Jun-2020 at 19:15.

  3. #3
    Alan Klein's Avatar
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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Anyone know how to make the images larger for viewing? Originals are around 1900ppi wide. (Edit: Pictures above have been replaced with 1900 wide images.)
    Last edited by Alan Klein; 18-Jun-2020 at 19:23.

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    Peter De Smidt's Avatar
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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Host the images remotely and link with img tags. I used Dropbox, but some use Flickr..... I'm sure there are other options. Or email them to me, and I'll host them on Dropbox.

    Why would you only sharpen the Epson scan?

    Here's something to try in either lightroom or Adobe Camera Raw, which is available from inside of Photoshop. Go to sharpening. Put amount at 40-50, radius at .5 (the minimum), and detail at maximum.
    May tomorrow be a better day.

  5. #5
    Peter
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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Nice! Did you wet mount the Epson scans?

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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Quote Originally Posted by Alan Klein View Post
    The following is after sharpening the Epson V850 only. Howtek not sharpened; only clip points adjusted on both.
    Attachment 204893

    Attachment 204894
    The second image with the door is much darker on the epson. Surprisingly the other image is not. It suggests the histograms are very different which would obscure the apparent resolution.

  7. #7

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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Also in the epson do you adjust the height of the film holder for max focus? You canít do this with the original epson film holder though (you can with the betterscanning one).

  8. #8
    Alan Klein's Avatar
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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Quote Originally Posted by Peter De Smidt View Post
    Host the images remotely and link with img tags. I used Dropbox, but some use Flickr..... I'm sure there are other options. Or email them to me, and I'll host them on Dropbox.

    Why would you only sharpen the Epson scan?

    Here's something to try in either lightroom or Adobe Camera Raw, which is available from inside of Photoshop. Go to sharpening. Put amount at 40-50, radius at .5 (the minimum), and detail at maximum.
    I tried sharpening the Howtek scans. But they didn't seem to get better. I've just been informed by Peter Figen that there’s no need to sharpen a 4000 ppi scan from a drum scanner. It’s already as sharp as it’s going to get and all you’re going to do is make the grain more prominent.

  9. #9
    Alan Klein's Avatar
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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Quote Originally Posted by Peter Mounier View Post
    Nice! Did you wet mount the Epson scans?
    No. I used Epson 850 Pro film holders that comes with the glass and adjustable height tabs for best focus.

  10. #10
    Alan Klein's Avatar
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    Re: Howtek 8000 Drum vs. Epson V850 flatbed scanners

    Quote Originally Posted by Kiwi7475 View Post
    The second image with the door is much darker on the epson. Surprisingly the other image is not. It suggests the histograms are very different which would obscure the apparent resolution.
    The histograms were different as the black and white clip points were set differently. See photo comparison below.
    Histogram results of scan by Alan Klein, on Flickr

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