Pacific Optical 18" F4

[Knackebrod]

Hi,

Is there anyone here that has given a Pacific Optical 18" F4 lens a try?
I struggle finding any information about the lens. It's from a Chicago Aerial KS-87B camera which uses 4.5x4.5" film.
Any info is welcome!

[Mark J]

There was an 18" F/4 lens for 4.5" square format in the Perkin Elmer catalogue from c.1970 . I wonder if there's any connection ?

[xkaes]

Does it look like this monster?

https://shopping.yahoo.com/product/s...9657-722616397

[Dan Fromm]

Does it look like this monster?

https://shopping.yahoo.com/product/s...9657-722616397

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, and Oude Delft. There's a link to the datasheets in the list. If you don't know what the list is, please ask.

[Dan Fromm]

Hi,

Is there anyone here that has given a Pacific Optical 18" F4 lens a try?
I struggle finding any information about the lens. It's from a Chicago Aerial KS-87B camera which uses 4.5x4.5" film.
Any info is welcome!

Is this https://www.ebay.com/itm/203090428463 what you're thinking of? KevinCameras has several of them. http://www.kevincameras.com/photo/in...category/28545 Big fat heavy lens, fixed aperture, no shutter. It has been done, but lenses like this one are very hard to repurpose. Maybe usable with the complete camera, power supply, control box and 5" roll film.

[Knackebrod]

There was an 18" F/4 lens for 4.5" square format in the Perkin Elmer catalogue from c.1970 . I wonder if there's any connection ?

That would match the era! Any chance you could get me a copy of that catalogue?

[Knackebrod]

Does it look like this monster?

https://shopping.yahoo.com/product/s...9657-722616397

That's a behemoth! No it's it's smaller brother:

[Knackebrod]

Is this https://www.ebay.com/itm/203090428463 what you're thinking of? KevinCameras has several of them. http://www.kevincameras.com/photo/in...category/28545 Big fat heavy lens, fixed aperture, no shutter. It has been done, but lenses like this one are very hard to repurpose. Maybe usable with the complete camera, power supply, control box and 5" roll film.

That's the one!
I should have clarified I intend to use it for wetplate photography so not having a shutter, matching camera isn't a dealbreaker for me
Thanks for the other manufacturers names! I couldn't find Pacific Optical in the list anywhere. I'll have to do some more research if the PO is identical to any of those.

[Dan Fromm]

That would match the era! Any chance you could get me a copy of that catalogue?

There is a link in "the list." See the first post in this https://www.largeformatphotography.i...mainly)-lenses discussion.

[Knackebrod]

There is a link in "the list." See the first post in this https://www.largeformatphotography.i...mainly)-lenses discussion.

Ok thanks, I was wondering if there was a more extensive catalogue from Perkin Elmer