Minox close up in Subminiature Times

In November 1994 issue of Subminiature Times newsletter published by Al Doyle in Houston, there was an artilce by Friedman about

using Minox binocular clamp to attach close up lens to Minox

 

Minox

 

"THE SUBMINIATURE TIMES', Box 60311-M. Houston, TX 77205.

 

See D. Scott Young: MINOX Marvel In Miniature p120 ISBN 9781587210686

Edited September 4, 2017 by MTC Photography

Al Doyle's former email address at att net does not work.

I hadn't thought of that. I sometimes use the binocular clamp to hold a filter or polarizer. The difficulty of using a close-up lens would seem to be parallax. Haven't found the article, so maybe it's mentioned, but if one devised a rack to move the camera the distance between the viewfinder and lens it would work. Kind of like the one the Rollieflex marketed years ago.

Close up lens!? For what purpose? It focuses to 8 inches (like mounting a +5 close up lens ) and that with parallax compensation. At 8 inches field size is less than 4 by 5.5 inches. How much closer would a person want to come?

Close up lens!? For what purpose? It focuses to 8 inches (like mounting a +5 close up lens ) and that with parallax compensation. At 8 inches field size is less than 4 by 5.5 inches. How much closer would a person want to come?

That's a good thought. Certainly not often.

The close focus distance of 20cm is not small enough for copying stamp,( field size 1 inch x 1.2 inch)

 

a Proxar 25cm attachment lens attached to Minox C with Minox binocular clamp is necessary

Close up is not only book page size

can you copy stamp with Minox without attachment lens ?

 

http://d6d2h4gfvy8t8.cloudfront.net/12548812-md.jpg

Edited September 7, 2017 by MTC Photography

http://d6d2h4gfvy8t8.cloudfront.net/12548812-md.jpg

Set up close up attachment with Minox

 

Copystand

Minox binocular clamp

Carl Zeiss 0.25M proxar

Minox C

The Omega watch face looks ok, the stamps, not so much. Since the Minox lens cannot be stopped down the limited depth of field would make it critical to set the exact distance from the object. Since the image is not being viewed through the lens this could be difficult. Just for kicks and giggles I suppose one could use a standard 50mm camera lens reversed, focused by eye (corrected) on the object being photographed, then the camera, with its lens set to infinity placed in the position of where your eye was. I alsol have a series 5, +10 diopter (100mm FL) that I could try mounted in the bino clamp. Should be interesting.

For regular macro I mount a 55mm f2.8 Vivitar Macro on my Pen F. The lens is i M42 mount and I have an Olympus M42 to Pen F mount adapter. This lens focuses from infinity to 1:1 and with half frame that is a field size of 18X24mm.

Edited September 7, 2017 by john_robison|4

It is quite simple to use attachement lens on Minox

 

Suppose the focal length of proxar is 0.30m

 

Then set the focsing dial of Minox to INFINITY

 

Attach the thE 30CM PROXAR LENS ON MINOX LENS

 

Put the object at 30cm distance from the close up lens

 

Light ray from the object after passing through the close up lens become parallel rays

 

Because the Minox lens is focused at infinity, thus parallel rays will be focused sharply on Minox film plan

Edited September 7, 2017 by MTC Photography

Magnification= Focal length of proxar divided by focus length of Minox

 

Suppose Proxar lens focus =30cm

 

Then Magnification = 300/15= 20 times

I'm quite aware of the math. That is why when I said focus with your eye (corrected) I meant with the distance part of your eyeglasses, so that a parallel bundle of light will be coming through the lens. Then the Minox lens, set at infinity (which I noted in my post) will bring the light to focus.

I am quite nearsighted so if I focused with my eye alone the lens would be set too close to the object and present to the minox lens a divergent bundle of light that would focus behind the focal plane. Fuzzy fuzzy.

I did not use eye to focus

Instead I use a tape to measure 30cm distance

With a fairly simple 2 element cemented lens you could measure from about midway of the thickness of the lens. But with a 6 element 50mm camera lens it would hard to exactly determine where along the lens barrel one should measure (close to mid point?) So it's just easier to use your eye. Of course the best way may be to 'cut and try' as it were. Unfortunately too busy now with house repairs and just moved and cannot find which box has Minox developing and film slitter and other accessories to my IIIs. I have at least 600 pounds of boxes, all labeled "John's camera stuff". None have ever said I was too bright.

Minox binocular clamp cannot hold a 50mm camera lens at all

 

How do you attach your LENS to Minox ? How to center it ???

Edited September 9, 2017 by MTC Photography

Wouldn't use the bino clamp (got one though). I build most photo accessories I need. Lets see....

50mm f1.8 Zuiko, used in reverse. Held up off copy by translucent material. (I'll figure out what later).

Plastic front lens cap with 1/2 inch hole bored dead center. Make cradle for IIIs out of hobby plywood cushioned with black felt and made to place lens directly over hole after advancing the film. Glue cradle to lens cap. Bore and tap hole 'in just the right place' for cable release. A hair elastic could be rigged to secure camera for each shot. Slip camera out of slot to advance film and tension shutter between shots.

Ah yes, can see it in my minds eye. (Especially after little afternoon cheap red wine).