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  1. Replies
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    Re: Publish Your Photos Here!

    Hi, Andrew,



    But you have to have them if you want to grow fruit!
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    Re: Publish Your Photos Here!

    Hi, Cyrus,


    Wow! Assuming you don't really mean "mb" (that unit, the millibyte, doesn't come up very often), but rather "Mb", that's 100 times bigger than what you mentioned before. I'm not sure...
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    Re: Removable Backs on 4x5s?

    Hi, Dan,


    A number of 4x5 cameras (including some of the Calumet and Toyo models) have backs that feature a "bail" that will gently lift the focusing frame to allow the film holder to be inserted...
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    Re: Publish Your Photos Here!

    Hi, Cyrus,



    Why do you care about file size? Isn't it pixel dimensions that you would be concerned with?



    Do you mean that the maximum pixel dimensions should be 2400 x 3000 px? Or the...
  5. Re: Setting exposure by Ev - Tutorial article updated

    Hi, Helen,



    Thanks so much for this additional information. (I saw your further input in the other thread, too, but did not have the chance to respond.)

    The Camerapedia entry for the...
  6. Setting exposure by Ev - Tutorial article updated

    I have just posted to my technical information site, the Pumpkin, a revised and updated edition of tutorial article, "Setting Camera Exposure in Terms of Ev", available here:
    ...
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    Re: New article, setting expsure by Ev

    Hi, Al,

    Thanks so much for the wealth of information.

    Actually, it looks from pictures I have seen as if the LV/Ev systems were also used on the Retina Ib/IB (IB was metered but with no...
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    Ev setting on Graflex shutter

    Hi, Al,



    Here is the Prontor SVS size 3 on my new Century Graphic (c. 1964). It is annotated (it will appear in Issue 2 of the article on setting expsure by Ev) and the base picture is a bit...
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    Re: New article, setting expsure by Ev

    Al,

    On your Retina IIIc, is the LV scale actually marked "LV"?

    Thanks.

    Best regards,

    Doug
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    Re: New article, setting expsure by Ev

    Hi, Al,

    I sent my note this morning before seeing yours!

    Thanks for the additional information and the links. It is very helpful.

    The "LV" scale on your " III little c" is in fact the bona...
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    Re: New article, setting expsure by Ev

    Hi, Al,

    Some research last night on the Kodak Retina cameras indicates to me that the setting system used on various of the Retina models was in fact based on the bona fide Ev scale (which I...
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    Light Value System

    Hi, Al,

    In the Polaroid system of setting exposure in terms of Light Value, LV=Ev-9. That is, LV 2 corresponds to Ev 11.

    Is that consistent with what Kodak used on your cammie?

    (Recall than...
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    Re: New article, setting expsure by Ev

    Hi, Al,

    Thanks so much for the additional info. Finding out just how this all came about has been very difficult.

    I already have a second edition in the works whose current draft introduces...
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    Re: New article, setting expsure by Ev

    Hi, Dave,



    I think I didn't make this sufficiently clear, but what is standard among the "international standard" backs is (a) the interface between the focusing plate and the "back foundation"...
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    New article, setting expsure by Ev

    We sometimes encounter cameras shutters that allow us to set the camera exposure in terms of exposure value (Ev), a quantity that reflects the joint effect on exposure of shutter speed and aperture....
  16. Re: How are disposable cameras able to operate if they have no moving parts?

    Hi, Alan,



    Of course, that means you can't take the film out of them.
  17. Re: Adventures in Lensboard Making - Three-piece Board...

    Hi, Scott,



    I had no idea about thast. Very intersting, and crafty.

    You have done a wonderful job on that board.
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    Re: 4th issue finally out -- come and get it

    Hi, Michael,

    I am surprised that you did not assert copyright as of this year. Probably an editorial oversight (easy to do with so much going on!).
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    Re: Question for Old Camera Restorers

    Hi, David,



    Will Thompson has had them make a bellows for him, and seemed quite pleased. Perhaps he will chime in here.
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    Re: Avery labels on darkslides...What the???

    Hi, Brian,



    Some old film holders had dark slides with "Exposed" printed in large letters in silver ink on one side (the "black side of the handle" side).

    Best regards,

    Doug
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    Re: Avery labels on darkslides...What the???

    Your best bet may be to first remove the paper layer after a soak in water and detergent, then use Goo-Gone to remove the non-water-soluble adhesive residue. Apply it to the residue area and let it...
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    Re: LF Generation Gap ?

    Hi, Frank,



    That's why the Century Studio Camera No. 10A (8x10, almost big enough to be an 11x14) is so big!
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    Re: Age of my Optar lens/Graphex shutter?

    Hi, Chauncey,

    I looked at the thread you cited. Very interesting.

    I was fascinated by your forensic work on the piece of a Buffalo newspaper!

    Best regards,

    Doug
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    Re: Age of my Optar lens/Graphex shutter?

    Hi, Chauncey,



    Excellent. I'll look for the cited material.

    Thanks so much.

    Best regards,
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    Re: Waterhouse stop sizes

    Hi, Pete,



    The f/number (N) is the focal length (f) divided by the diameter of the entrance pupil (D), which is the apparent diameter of the stop as seen from in front of the lens:

    N=f/D
    ...
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    Re: Age of my Optar lens/Graphex shutter?

    Hi, Wayne,



    Great shot. Thanks so much.

    Best regards,

    Doug
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    Re: Age of my Optar lens/Graphex shutter?

    Hi, Gene,



    Yes, Graflex used Wollensak as its supplier of lenses carrying its "Optar" name for a while, but later changed to Rodenstock. I don't know when that change happened.

    I understand...
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    Age of my Optar lens/Graphex shutter?

    Greetings,

    I recently acquired a lovely Optar 162 mm f/4.5 lens in a no. 3 Full Synchromatic Graphex shutter (both made by Wollensak for Graflex, Inc.). I believe that the lens would have been...
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    Re: Age of my new Calumet CC-401?

    Hi, "whiteymorange"

    Thanks so much for the link. I forgot there was a Calumet catalog on that site - I visit it all the time for other stuff I have been thinking about longer (Graflex, Kodak,...
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    Age of my new Calumet CC-401?

    Greetings,

    I just received a lovely Calumet 4x5 view camera, which I suppose to be a CC-401. It has a 26" long rail and is in gray finish.

    The serial number is 25028. Can we determine its...
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    Re: Unveiling of the Century

    Hi, Randy,

    Wonderful project, great work, beautiful machine.
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    Re: Calumet 400-series 4x5

    Hi, Ernest,



    Thanks so much for the scoop.

    The article you reference is very valuable. Is the writer reliable?:)

    I note that the "long rail" version was the CC-401, and see elsewhere...
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    Re: Calumet 400-series 4x5

    Hi, Mark,

    Thanks so much. That is very helpful.

    Best regards,

    Doug
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    Calumet 400-series 4x5

    As many of you may know, my study and collecting of large-format cameras has bene concentrated on products of the Graflex dynasty, and I've learned a lot in that milieu.

    But I just rather...
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    Re: Large Format Backs - New tutorial article

    Hi, Teaser,



    Well, if I didn't know your nom de guerre, I would find that a bit pejorative, but since I do, I'm proud to receive that rating. Thanks.

    Best regards,

    Doug
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    Re: Large Format Backs - New tutorial article

    Hi, Ralph,



    Yes, that would be very nice. My e-mail is:

    doug.kerr@att.net
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    Re: Well, now you've done it!

    Hi, Jack,



    Well, it's dirty work, but somebody has to do it!



    That's what I've seen too, but of course that would be equally beneficial on a Graflok (international) back. But I don't...
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    Well, now you've done it!

    Hi, Jack,

    Well, now you've done it! I decided to write a section on bail backs for the article, but I didn't have any good pix (and no bail backs here to photograph), and my friend Will (who has...
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    Re: Why do you call Film Analog?

    Hi, Bob,



    An analog representation is one in which some continuously variable physical property varies with, and thus represents, the value of another continuously variable property. For...
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    Re: Large Format Backs - New tutorial article

    Hi, Mark,



    Again, I wasn't trying to explain everything that would go into a back. But I may expand the scope of the article the next time around.

    Regarding digital backs, I am so far only...
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