Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 28

Thread: Espon V850 and Better Scanning wet scan holder

  1. #11
    Steven Ruttenberg's Avatar
    Join Date
    Sep 2017
    Location
    Mesa, AZ
    Posts
    2,290

    Re: Espon V850 and Better Scanning wet scan holder

    Quote Originally Posted by Doug Fisher View Post
    >>I will check this but I don't believe Vuescan has that as an option. <<

    While it sounds like you have solved your issue, for future reference, Vuescan does have this setting although it uses slightly different wording compared to EpsonScan. This is how the scanner knows which of its two lenses to use.

    For the Epson flatbeds, a piece of exposed and developed film with a cross-hatch pattern lightly scratched across it with a very fine/sharp needle can be a useful focus testing pattern. Run your test scans at 3200 ppi. The ripples along the edge of the scratch often provide the best detail to use for judgement. That way, you don't have to worry about whether you had your camera lens focused well and/or that you are choose an evaluation subject in the scene that was in the intended plan of focus (which seems might have been what tripped you up during your last test).

    Doug
    That sounds like a plan. I was gonna buy a test target, but your method is a lot cheaper! What does Vuescan call it? Maybe I have it set wrong and dont know it.

    Thanks for the help!

  2. #12

    Join Date
    Feb 2018
    Posts
    10

    Re: Espon V850 and Better Scanning wet scan holder

    You are making sure to use "film with film holder" in the settings, correct?

  3. #13
    Steven Ruttenberg's Avatar
    Join Date
    Sep 2017
    Location
    Mesa, AZ
    Posts
    2,290

    Re: Espon V850 and Better Scanning wet scan holder

    Viewscan does not have that option to choose. Apparently there is a way to do that, that isn't labeled as such. One thing I did find out, is that there is a film scan guide bar that you put in the calibration area if you want to scan film directly off the scanner glass. You use it with 8x10 film, but it will work with any. This bar causes the scanner to focus on the scan glass and not above it. Also, if you choose scan transparencies it automatically uses the higher resolution camera which can give you the theoretical 6400dpi. If it is set to print it will use the "lower" res camera which gives you a max of 4800 dpi. At least that is what I read.

    I do have some scans using the Betterscanning and Epson fluid mount that are very sharp. Just when I swapped out the scanner for the replacement that was sent to me I ran into the focus issues.

  4. #14

    Join Date
    Oct 2013
    Location
    Doncaster UK
    Posts
    569

    Re: Espon V850 and Better Scanning wet scan holder

    On the Input Tab next to the Mode option there is a drop down list.

    Click image for larger version. 

Name:	Screen Shot 2018-03-28 at 19.45.42.jpg 
Views:	14 
Size:	42.8 KB 
ID:	176582

    Transparency should be selected when using a film holder including the Epson Wet Mount holder. This will select the high resolution lens and have a narrower scan area down the centre.
    Transparency 8x10 should be s elected when scanning direct on-top of the scanner glass. This will select the lower resolution lens and have a wider scan area.

  5. #15

    Join Date
    May 2017
    Posts
    232

    Re: Espon V850 and Better Scanning wet scan holder

    Quote Originally Posted by Steven Ruttenberg View Post
    Also, if you choose scan transparencies it automatically uses the higher resolution camera which can give you the theoretical 6400dpi.
    When you choose transparency it changes lenses. It changes to a longer focal length lens (which should have a narrow depth of field) that is focused slightly higher about the glass.

    Both lens are wide angle lens with fixed focus AFAIK. The pixel density never changes, even when you change resolutions.
    Last edited by Ted Baker; 28-Mar-2018 at 14:46.

  6. #16

    Join Date
    Oct 2013
    Location
    Doncaster UK
    Posts
    569

    Re: Espon V850 and Better Scanning wet scan holder

    Click image for larger version. 

Name:	Screen Shot 2018-03-28 at 21.59.38.jpg 
Views:	20 
Size:	34.9 KB 
ID:	176589 Click image for larger version. 

Name:	Screen Shot 2018-03-28 at 21.59.57.jpg 
Views:	21 
Size:	35.2 KB 
ID:	176590

    This is from the V800 Service Manual

  7. #17
    Steven Ruttenberg's Avatar
    Join Date
    Sep 2017
    Location
    Mesa, AZ
    Posts
    2,290

    Re: Espon V850 and Better Scanning wet scan holder

    Click image for larger version. 

Name:	863AC52B-6D1C-4A11-9897-1DC1006D8AAD.jpg 
Views:	14 
Size:	59.0 KB 
ID:	176598


    According to the V850 manual you put this plastic piece in calibration area and it simply imforms lens to FOCUS ON the glass and not above it. It makes no mention of a hi resoultion or low resolution lense being chosen. When I read that and the specs on what a transparency can be scanned at, I think you get hi res lens on scanner glass and above glass in a holder and they just change how much of the sensor is active on scanning based on whether or not you use the scan guide they give you with scanner.

    Very interesting topic. Would be cool if we could get the actual functioning directly from Epson.

  8. #18

    Join Date
    May 2017
    Posts
    232

    Re: Espon V850 and Better Scanning wet scan holder

    the service manual shows the two lens and how they are setup with the mirrors etc.

    https://www.manualslib.com/manual/10...e=11&term=warm

    They are fixed focus according to the service manuals.

  9. #19
    Steven Ruttenberg's Avatar
    Join Date
    Sep 2017
    Location
    Mesa, AZ
    Posts
    2,290

    Re: Espon V850 and Better Scanning wet scan holder

    Well that settles that. They say high resolution not low though. So I would guess there should be similar performance as you just need a wider angle lens for greater coverage.

  10. #20

    Join Date
    May 2017
    Posts
    232

    Re: Espon V850 and Better Scanning wet scan holder

    Quote Originally Posted by Steven Ruttenberg View Post
    Well that settles that. They say high resolution not low though. So I would guess there should be similar performance as you just need a wider angle lens for greater coverage.
    The pixel scanning size never actually changes, only the lens change, which gives a greater magnification, and also the pixel shift algorithm kicks in from 3200dpi or before.

Similar Threads

  1. Replies: 98
    Last Post: 22-Sep-2019, 12:46
  2. scanning speed of V700 vs V850 using epson scan
    By Chester McCheeserton in forum Digital Hardware
    Replies: 12
    Last Post: 1-Apr-2018, 14:50
  3. Exhibit Scan | Drum Scanning Perfection
    By celticexplorer in forum Resources
    Replies: 4
    Last Post: 9-Mar-2014, 07:03

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •