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    Re: Epson 3200 Scanner on 64-bit Windows 7

    Thanks for the link.

    Downloaded than ran it. Seems pretty good. Maximum scans are 3200 lpi, but that's plenty good enough for 4x5 negatives. I like the large preview and scan windows it uses. ...
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    Re: Epson 3200 Scanner on 64-bit Windows 7

    Rick, those like yours, for example. It's encouraging so thanks for what you said.

    I'm still a bit new to large format B&W negative scanning. So I appreciate any help or favorable comments on...
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    Re: Epson 3200 Scanner on 64-bit Windows 7

    Dan, thanks for the link to Vuescan. I downloaded then installed it. Seems to work pretty good. After making a few more runs with it using different settings, I'll decide if it's worth buying.
    ...
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    Epson 3200 Scanner on 64-bit Windows 7

    Got sent a link with info on updating Epson 4990 Scanner drivers so they can be used with an Epson 3200 on a 64-bit Windows 7 platform by making the 3200 think it's a 4990. Here's the link:
    ...
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    Re: Scanner DPI Options

    Well, yes, I did mean 300 pixels/inch (ppi) photos for reproduction. I retired from HP almost 17 years ago; 'tain't easy for me to remember all that stuff.

    Thanks for setting me straight.
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    Re: Scanner DPI Options

    Well, my next phase of scanning 4x5 B&W negatives is using the Epson 3200 I just bought; that is, as soon as it arrives in a box.

    It doesn't have the SilverFast software CD, but I'm wondering if...
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    Re: Scanner DPI Options

    When I did some technical documents working at Hewlett-Packard, the graphics group standard for printing marketing photos in brochures and such was 300 dpi. As explained to me, that's based on the...
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    Re: Scanner DPI Options

    Found this site:

    http://www.largeformatphotography.info/scan-comparison/

    Decent comparisons, I think, to compare different scanners using the same negative.
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    Re: Scanner DPI Options

    Nate, thanks for the link to the curves. I understand better now that I've seen the data.

    'Twould be nice to see the results of scanning a really good B&W negative at different scan lines per...
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    Re: Scanner DPI Options

    Nate, thanks for your excellent post.

    I meant 30 line pairs per millimeter in my original post; I know it takes 60 lines, half white and half black alternately positioned, to see 30 of 'em across...
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    Re: Scanner DPI Options

    Michael, that's a good question. I'd guess flatbed negative scanners deliver close to specs. If not, then a higher spec'd resolution would best ensure you got at least what your minimum is.

    If...
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    Scanner DPI Options

    I'm searching for a decent scanner for my 4x5 B&W negatives. Something that will do a good job on negatives with images resolved in the 30 to 60 lines per millimeter range my lenses produce.

    The...
  13. Re: What do you call lenses that can focus like this?

    When I worked at Hewlett-Packard, a good friend designed chips that were made in the site's integrated circuit facility. Each layer for the chips was made by taking a picture of a drawing of that...
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    Graflex 90mm f/6.8 Optar; Focusing Issue

    In making a rangefinder cam for my Super Speed Graphic to use with this lens, I noticed a focusing issue. Wide open and focused at distances from 4 feet to infinity as seen on the ground glass,...
  15. Re: Resolution/contrast decreasing at larger apertures?

    Here's a link to a web site discussing diffraction. Best part is a calculator to see how much diffraction a combination of camera properties, viewing distance and f/stop effects diffraction.
    ...
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    Re: How to store LF gear?

    Well, I'd ask the factory. Knowing why things are the way they are is the backbone of intelligence.

    When I worked at Hewlett-Packard, we oft times were asked why some things were the way they...
  17. Graflex Optar, 90mm f/6.8; Making and Testing an SSG Cam

    Made a P4 cam for my 4x5 Super Speed Graphic from a nail plate. Cutting and griding it for a 90mm Graflex Optar was a learning experience. Hardest part was getting the high/distant end fit all the...
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    Re: Vivitar 1321 Tripod; Clean & Lube its Head

    John, thanks for your comment. While this tripod's nameplate's rivited to the main part of the head, I could grind off the rivet's heads, take the nameplate off and see what's inside. That is, if...
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    Vivitar 1321 Tripod; Clean & Lube its Head

    Got an old Vivitar 1321 tripod at a garage sale yesterday. Overall, it seems to be rigid and stable enough to use with my Super Speed Graphic at the slower shutter speeds.

    It's in excellent...
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    Re: Testing Lenses; Telescope Method

    Here's a picture of an identical lens. Only the serial number on mine's G44xxxN.

    http://www.collectiblecameras.com/images/P/Gra_90OptarWA.jpg
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    Re: Testing Lenses; Telescope Method

    I think I'm confused on who made the glass for this lens.

    Here's the shutter's nameplate info:
    GRAPHEX
    FULL SYNCHROMATIC Made By WOLLENSAK For GRAFLEX INC.
    ...
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    Re: Testing Lenses; Telescope Method

    It's a Wolly version with Full Synchromatic shutter. On the front lens mount:

    "3 1/2" (90mm) GRAFLEX OPTAR W.A. f/6.8 No. G44xxxN."

    The black round name plate has "Made by Wollensak for...
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    Re: Testing Lenses; Telescope Method

    I agree when the eyepiece is centered in the 4x5" frame. Moving it to the edge shows that old lens is decent enough, especially stopped down to f/22 and f/32. It appears to go down to almost f/45...
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    Testing Lenses; Telescope Method

    Mounted a 15mm eyepiece lens from a spotting scope in a sheet of plywood fit to the back of my Super Speed Graphic. Racked the Graflex 1000 135mm Optar/Rodenstock lens out to get a sharp image in the...
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    Re: Where to buy gaffer's tape?

    I've got almost two rolls (1 plus another with about 4 yards used) of 48mm wide black 3M gaffers tape. Got it free from 3M via a wholesaler in California when I saw their ad for it on line. Emailed...
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    Outdated Kodak HC-110 Developer?

    Got three square bottles of this for only the first verse of a short song (10 cents each). Question is, can it still be used for developing 4x5 sheet film? The newer bottles are round but this...
  27. Thread: Film Holders

    by Bart B
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    Re: Film Holders

    Well, this brings back memories of my days in the US Navy (22.5 years of 'em, to be exact). A good friend of mine was a Photographer's Mate First Class at at the time. In 1959, I showed him my new...
  28. Thread: Film Holders

    by Bart B
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    Re: Film Holders

    About the dark slide's handle/tab color that's supposed to be out if the film under it's exposed, does any film holder's instructions (camera's, too) state what the standard/preffered/proper way is?...
  29. Thread: Film Holders

    by Bart B
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    Re: Film Holders

    A most interesting thread. Having recently acquired a Super Speed Graphic, I've been going round and round with the "How Do I Mark Film Holders?" issue for some time. In the 1960's, when I had a...
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    Graflex 1K Optar 135mm f/4.5 Image Circle?

    After shifting my Super Speed Graphic's lens sideways to the limits and checking images on the ground glass, I'm rather pleased with image sharpness beyond it's rated image circle of about 153mm. ...
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    Re: Making Panoramas using Lens Shifts

    Thanks to all for your comments. But I got to thinking that shifting the lens board from side to side will change the axis reference. I believe that the lens' nodal point should remain fixed in...
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    Making Panoramas using Lens Shifts

    Anybody ever set up their large format camera on a tripod, shifted the lensboard to the left limits, focused on a landscape scene and took the picture, reloaded, shifted the lens to the right limits...
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    Re: Shimming up septums?

    The ingenious Hidalgo Don Quixote's a close friend of mine. He's told me several times he has never been found guilty of tilting at windmills. But he did mention that if I use only the smaller 2"...
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    Re: Shimming up septums?

    I don't know. But after reading this:

    http://www.largeformatphotography.info/holders.html

    then doing some optical/lens spreadsheets and focus tests with the SSG's Graflex 1000 Rodenstock Optar...
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    Re: Shimming up septums?

    Yes, I do want to think about how much the film bows. I'll add some approximations to the depth to septum to get the total spread the film may be from specs.

    No.

    All sorts of work. Includes...
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    Re: Shimming up septums?

    Are you referring to bringing down the flat part of the septum? Or something else?

    The ground glass behind the Ektalite field lens is well positioned to get sharp images when the rangefinder's...
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    Shimming up septums?

    In checking the fourteen 4x5 Riteway film holders I've got, some of 'em have septum depths from the flats as much as .201". The 40 year old film that came with my SSG had black .004" thick 4x5" paper...
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    Re: Testing a Graflex 1000 2A Shutter

    I used 4 sheets of Ilford film with the camera a couple of days ago for my first live shots indoors with the Graflite flash and 5" reflector. 1 was way too dark; bulb that came with camera didn't...
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    Re: Testing a Graflex 1000 2A Shutter

    Dan, I thought about that a few days ago when I made my own shutter tests with a spinning disk. But the spread of errors ranges from 28 to 70 percent in the range I'll use it at. Which means extra...
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    Testing a Graflex 1000 2A Shutter

    This shutter's been dormant (stored, unused, set at 1/125th) for about 25 years. Brand new about 1965 in a Super Speed Graphic, it didn't see much use through about 1985. Very few fingernail...
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