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Alan, have you heard of Certified and Registered Mail?

Photographer has a short camera, wants to use a long lens.

Try focusing on a near subject. The Elmar may be, in effect, a close up lens.

As far as I know there are none. Front cell focusing lenses on small format folders are usually triplets or tessar types. If I were you and were determined to go the way you've laid out I'd beg,...

The second alternative would probably be easier to make and make work. Look at a Pacemaker Graphic.

But it would not be like a pocketable folder. If that's what you must have, think very hard...

Huh? When the lens is focused at infinity the distance from the lens' rear node to the film plane is the focal length. Exactly. Where the standard then sits is the infinity position. It depends...

OP, since you want to shoot 8x10 wet plate, why don't you just get a longish Tessar type? They're around, they have the coverage you need and they can cost much less than and are lighter than aerial...

No, Pacific Optical made lenses. Perkin-Elmer made lenses. Chicago Aerial Industries made the KS-87B camera that used the lens the op is thinking about. Fairchild made both aerial cameras and...

Taken over? Perhaps not. For some, not all, of the lenses USAF bought it contracted with >1 manufacturer to make them, all to the same design. For example, 3"/4.5 Biogons from Pacific Optical,...

Hmm. I use a slightly roundabout way to do it.

Step 1. Focus the lens at the desired magnification, i.e., set the shot up.

Step 2. Measure extension. This the distance the lens has been...

None that I'm aware of.

There is a link in "the list." See the first post in this https://www.largeformatphotography.info/forum/showthread.php?138978-Where-to-look-for-information-on-LF-(mainly)-lenses discussion.

Is this https://www.ebay.com/itm/203090428463 what you're thinking of? KevinCameras has several of them. http://www.kevincameras.com/photo/index.php?/category/28545 Big fat heavy lens, fixed...

My USAF data sheets say that the monster is for 2.25 x 2.25. They don't mention an 18"/4 by Pacific Optical, do mention 18"/4 lenses by Fairchild (2 lenses), Perkin Elmer (2 lenses), Bell & Howell,...

One real risk -- vignetting -- was mentioned by reddesert in post #6 above. The lens receives and projects a cone of rays. A thin panel with a circular hole -- that's a Packard shutter -- in front...

Possibly of interest: https://vocecameras.com/

The most likely is that your previous purchases, like mine, came by mail. Couriers such as FedEx, UPS, DHL ... charge customs brokerage fees. I see this as dishonest and insist that my goods be...

Thanks for the reply.

My, you must be rich. Asking prices for long Super Sixes are well into 5 digits (USD). Have you considered getting an 8"/2.9 Pentac or a 7"/2.5 Aero Ektar? They're much...

Don't be so coy. Tell us which 8" Dallmeyer lens you have. Name, focal length and aperture. If it is a Super Six, it might not fit a Compact 5x7's board. Unfortunately my references don't give...

No change needed.

Re post #2 above, G-Clarons, Repro-Clarons, Comparons and Componons (older jes' plain and newer S-) have cells that are direct fits in various sizes of Compur/Prontor/Copal...

Mark, I have 203/7.7 Kodak Anastigmat. It has the same prescription as the 203/7.7 Ektar. Mine is in barrel. I have other 200 +/- mm lenses so haven't tried to find a shutter that's right for the...

If the lens is coated there will be a C with a W inside it on the trim ring. It should be coated. Large scratches can be filled with, e.g., India Ink.

To find out whether the scratches will be a...

https://www.cameraeccentric.com/static/img/pdfs/meyer_3.pdf

Um, er, ah, if I understand these things correctly the lens board goes between the rear of the shutter and the retaining ring, not behind the ring. The ring's flange should butt on the board.

Mark, I'm sure that, given your profession, you know that every lens has three focal lengths.

There's the engraved/marketing focal length. There's the design focal length, i.e., of a lens made...

It is a triplet whose maker - Taylor, Taylor & Hobson - thought it could be used on formats up to 3.25" square.

See https://cookeoptics.com/compendium/

Not to be a complete idiot, but is it possible to mount a lens with a fat rear cell on y'r 5x7 Gandolfi by removing the rear cell from the shutter, attaching board with shutter to the front standard...

Wise. I once bought a late WW-II vintage coated Aviar that had haze I couldn't clean off. Close examination found that the front glass had many many tiny pits.

Your lens is in a Kodak branded Ilex #4 shutter.

The cells should unscrew from the shutter. Don't try to take the cells apart.

What is this "lens retainer" of which you speak? What I understand as the retaining ring, which clamps the shutter...

Hmm. Please don't get cute when posting links. Yours doesn't work. This https://www.pacificrimcamera.com/rl/00268/00268.pdf does.

Please read more carefully. The left-most column of the table...

Check the rear threads. #1 shutters are asymmetric, M40x0.75 front threads and M36x0.75 rear. In other sizes front and rear threadings are the same.

False.

OP, you've rediscovered the center filters made for Bausch & Lomb Metrogon lenses, wide angle lenses for aerial photography.

Is there a T-mount SLR?

Per P-H Pont's chronology, 1938.

Thanks for explaining what you're trying to accomplish. Using a small format lens on a larger format isn't a good approach to getting "soft focus." Nearly all small format taking lenses are...

pigpen, in post #3 above I asked you what you wanted to accomplish by mounting a "35mm lens" on a larger format camera. Please answer my question.

Your post #11 above on why you have a Crown...

Oy? Which format do you intend to use a "35mm lens" on? What do you hope to accomplish?

I ask because, although lenses for 35 mm cameras can be used on larger formats for macro work, as John...

Thanks for the correction.