mounting enlarger lens g-claron 240 f9

[yul]

Hello,
First sorry for my english it is very poor
I have a scheneider g claron 240 mm f9 i´d like know if it´s possible mounting a shutter (i think no its possible shutter in f9 )
I´d like make macrophotography, wich is the coverage of this objetive? i have a crown graphic and i´m building a ulf camera.
I have to many answer because i don´t meet anybody shoot in large format and i live in a small village.
I have too a Taylor Hobson anastigmat 21inch, but only have the objetive, what it´s the mounting flange or ring do i need, and the lens board?
i´ll use this objetive in ulf and in the future in alternative photography
Thank you very much
Greetings from Spain
Alberto

 

[AgX]

In macrophotography it is likely you use the lens in a studio setting (table-top).

Then you might likely darken your studion and only use flashlight or work with continuous light at level that needs long enough exposure time to cap the lens by hand (literally...)

 

[Ian Grant]

The 240mm f9 G Claron fits a Copal or a Compur#1 shutter, as it's optimised for close focus it'll be OK for macro work. You could use a Thornton Pickard roller blind shutter with it as well. Coverage is quite wide far more than you'll ever need for the Crown Graphic, at f64 it's around 410mm but may suffer from difraction.

I can't see a 21" Anastigmat in my TTH Cooke literature is it the f10 process lens ? There's no flange size listed but I may have information somewhere else. TTH made standard flanges so it should be easy to measure you lens.

Ian

 

[yul]

Yes, i think it´s rare lens,it´s f10

 

[paul_c5x4]

For macro (or any other close up work), you would probably want to use something a lot shorter than a 240mm lens on a Crown. Depending on how close you want to get, a 135mm or even a 90mm lens may be more suitable.

I have a couple of process lenses similar to your Cooke & Claron lens that I use on a ULF camera (a Watson 10x12). I was fortunate to find a Luc shutter (similar to this one: (there was a url link here which no longer exists)) that was large enough to fit over the front of the lens. The larger Luc shutters are probably rarer than Thornton Pickard... Another alternative is a Packard shutter.

 

[Neal]

Dear Alberto,

I would second the idea that working with available light will likely give you exposures long enough that manually applying the lens cap will be sufficient. I have used that method on a Crown Graphic with a Wollensak 9-1/4" enlarging but not at close focus. Remember to add exposure time to compensate for the added bellows extension needed for close up photography. See here. To see how this might work, I just put the Wollensak on my Crown Graphic and I find that the bellows are not long enough to get anywhere near a 1:1 size on film. The 135mm Schneider Xenar that came with the camera is capable of 1:1 but I only tried it once and can't seem to locate the negative to show you.

In the future, if you do end up with a camera large enough to use one, a Packard shutter (here) can still occasionally be found.


Good luck,

Neal Wydra

 

[yul]

I think that for g claron its better use in my future ulf camera i could done 1:1 or maybe more with a big bellow and don´t use shutter.
then i need buy a lens board copal 1 for the g claron and mounting flange(39 mm??) and mounting ring.is it correct?

And the same for the Hobson Taylor, copal 3 and mounting flange and mounting ring(how many milimeters have this lens,sorry i havent caliber)
Thank you very much everybody for help me
i´m very grateful

I usually shoot with my mamiya c33 and i love pinhole too, but now i try to learn and discover more
Thanks

 

[Ian Grant]

I don't think it's a rare lens, rather that it's a Process lens primarily for the reprographic industry, but TTH do say the lenses can be used on View ad Commercial cameras as well. Coverage is 12"x15" at full size (1:1) , 10"x14" at half size, so probably only 8x10 at Infinity.

Ian

 

[yul]

Hi Ian
Do you know everything necesary for mounting this lens?

 

[Ian Grant]

Not really, I have nothing with the specification in terms of flange size, however somewhere I have a list of the TTH flange sizes and they were consistent and remained unchanged with time.

Ian

 

[John Koehrer]

One good thing with large diameter lens is the hole in the board only has to be slightly larger than the lens. At that point it can be held in place with an O ring or even tape.
You can use a drop shutter on the front if you like.

 

[yul]

Yes, it´s good idea, maybe it´s better and more cheep build a lens boad more width
I think its 75 mm

Somebody shoot with this lens?, have this lens similar bokeh effect that kodak aero ektar?
I´d like see some example,
I wrote to taylor hobson and they said to me that it´s a II war aviar lens,
Thanks