Espon V850 and Better Scanning wet scan holder

**Steven Ruttenberg** · 28-Mar-2018, 20:13

So much to learn to use this mechanical marvel effectively.

**Steven Ruttenberg** · 30-Mar-2018, 20:52

Right now I am calibrating per Doug suggestion on scratching a hatch pattern into and exposed piece of film. I have progressed from 0 to 1.5 turns, so far, 1.25 is the best, waiting for 1.5. If worse, I will back off to 1.375 turns and see. 1.5 got better still. I hope it tops out at 1.75, the scanner lid is already needing to be pulled up a bit in the back which is no biggie as it is designed for that, but rather not if I don't have to. The real test will be scanning an actual 4x5 slide that I have and is so in focus, people comment it looks 3D when viewing on light board with eye loupe.

**Steven Ruttenberg** · 30-Mar-2018, 21:38

Went down from 1.75 to 1.5625 turns. No real difference. When I look at 1.5, 1.5625 and 1.75 I think I see a difference, but then I don't. So I will start by splitting difference and use 1.5625. I should get a target just for giggle, but the real test will be comparing scan of slide to the actual.

**chassis** · 31-Mar-2018, 05:55

Steven what is the height in mm, that relates to 1.5625 turns? Lots of reports of people using roughly 3mm scanner glass to film height for these machines, as optimal focus height.

**Steven Ruttenberg** · 31-Mar-2018, 17:28

It equates to approximately 2.8 mm. I made some minor improvements to the holder screws by adding thread tape to them as they were very loose in the holes (could easily be moved). I also adjusted the scanner lid so it will sit evenly on the holder now. If lid brackets are fully in as normal the lid will preload the end of the holder closet to the lid hinges which can cause the holder to not sit evenly on the scanner glass. I went back and currently trying it at 1.75 turns which is approximately 3mm height of Mount glass to scanner glass.

**chassis** · 31-Mar-2018, 18:40

Thanks Steven.

**Steven Ruttenberg** · 31-Mar-2018, 21:45

No problem. I will measure the final distance and post. But I ended up at 2 full turns which is 1.6mm per instructions. The starting height with no adjustment is approximately 1.5mm. So I am arou d 3.1-3.2 mm scanner glass to ANR glass. See my post on practice image.

http://www.largeformatphotography.in...d-Barrel-Cacti

**Alan Klein** · 1-Apr-2018, 06:02

Originally Posted by Ted Baker

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.

Do you know where I can find the service manual for the V600?