Large Format

[ratboy]

Hi Keltzar

Any chance you want to sell your spare Copal 0 ?

Lam

 

[hongsien]

hi guys, thanks for the advise!

HS: Those lenses look really quite old... are you suggesting I buy them for the shutter?

I decided after some thinking that since the shutter coming on the symmar is new Copal #0 press shutter, maybe I'll just use it for the moment... and eventually I'll upgrade the whole thing when I've shot enough and probably move to a Sironar-S or a Apo-Symmar-L.

Hi,

Yes, buy for the shutter, but the lenses are sometimes not bad too for experimenting, you would be surprised!

Also ask Ken Wise if he still has shutters for sale......his shutters are not the latest ones but why care? It is just a shutter as long as they are accurate....

Hong Sien

 

[singscott]

Sincre we are OT. Any one got a speed graphic or graflex lenboard will copal 1 opening? PM me PLEASE :bigeyes: :sweatsm: :sweatsm:

 

[Keltzar]

Hi Keltzar

Any chance you want to sell your spare Copal 0 ?

Lam

.... only if I can get a regular copal #0 from the proceeds from selling this press copal!

I would be interested in exchanging this copal with a regular copal #0 of equivalent age. I see from websites that new, the press copals are actually more expensive.

 

[The_Cheat]

Just wondering, since there are so many large format lenses that are selling rather cheaply (without shutter) in ebay, how would one know what shutter that particular lens could actually fix? Also, where to look for the appropriate shutter?

I'm currently in search of a good cheap lens (haaa~! Singaporean mah! Always out for a real bargain! ) for a view camera. Any suggestions? Looking specifically for 90mm and maybe a 200mm.

 

[marios_pittas]

And while we are 4x5 OT (On Topic) does any have any experience with:

4x5 Fresnel vs 4x5 Ground Glass? I need one for my home brew so, their new Fresnel pricing is not much off buying locally a new Ground one.. unless one someone has a used one for sale..

http://cgi.ebay.com/ws/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=3867967595

Marios

 

[marios_pittas]

Just wondering, since there are so many large format lenses that are selling rather cheaply (without shutter) in ebay, how would one know what shutter that particular lens could actually fix?

Most LF lenses have fixed size shutters sizes (00, 0, 1, etc.).. which you need to match with the lens board hole size in order to achieve light-tighness.

 

[ratboy]

Just wondering, since there are so many large format lenses that are selling rather cheaply (without shutter) in ebay, how would one know what shutter that particular lens could actually fix?

Most LF lenses have fixed size shutters sizes (00, 0, 1, etc.).. which you need to match with the lens board hole size in order to achieve light-tighness.

Nope ... he's asking about the lens cell spacing
the space between front and rear lens cell groups.

This is just a guess

Newer lens have specs of the distance the cells have to be
spaced at.

For reshuttering of older lens,
most pro shop will have a optical bench that allows them to
test the lens cells at diff spacing to get the optimal distance
then they use either washers or adapters to space the cells
apart in the shutter.

For home diy, just mount and test lor : )

Lam

 

[marios_pittas]

Nope ... he's asking about the lens cell spacing
the space between front and rear lens cell groups.

Possible

But to shutter the lens? In Singapore? Which shop does that? For how much?

-- Marios

 

[The_Cheat]

For home diy, just mount and test lor : )

Lam

For home DIY, it's simply just ripping off shutter from another source (say a compur from an old lens) and test it on the lens issit?

 

[ratboy]

seriously speaking ...

The manufacturers spend thousand of dollars with computer aided design etc to produce these lens, example Fujinon ... which have in their shutters, a real thin ( say 1mm spacer/washer ) to correctly spread out the lens cells for the optimum image.

And here i am recommending that hackers ? just rip the shutter off another lens to test ... but hey, it works.

I have measured the lens cell spacing of my original lens in seiko 0
shutter and in copal 0 shutter, and there is approx 4mm difference.
I can't tell the difference from the final image.
Maybe others can, but i can't.

So moral of the storey is no harm trying, don't do anything that cant be reversed, do not force if the screw threads don't match etc .

If you got the shutter, might as well try
cause it's going to be costly to send the lens overseas to reshutter
and maybe there ... they do the same : )

of course if you can retain the original spec .. that would be best

 

[Keltzar]

You can check to a fair accuracy on the 4x5 groundglass in your camera, with a magnifier at infinity. You need to add spacers till the image is sharp at the infinity focus point.

That's how I did a home-job remounting of my rollei-KB mount Planar 50/1.8 for my EOS. I put a bit of magic tape to simulate the thickness of film on an old F3 focus screen, and stuck a cheap loupe to the screen and placed it on the film plane with camera on tripod... testing the rig till it was sharp at infinity at the focus plane.

though since that time I actually got an M42 rollei planar 50/1.8 which works on an adapter for my eos!

 

[Keltzar]

Hi,

Yes, buy for the shutter, but the lenses are sometimes not bad too for experimenting, you would be surprised!

Also ask Ken Wise if he still has shutters for sale......his shutters are not the latest ones but why care? It is just a shutter as long as they are accurate....

Hong Sien

after some thought... I think too much potential for grief....
I will probably try out the Symmar-S for a while and then upgrade to one of the apo-symmar or Apo-Rodenstock-Sironar N lenses. Thanks anyway!