User instructions for ohnar zoom reverser slide copier

tonyowen · Nov 8, 2019

Does anyone have user instructions for the above?
If so could they please send me a pdf copy to tonyowen34@gmail.com.
regards

Tony

AgX · Nov 8, 2019

I thought I gave all answers already on your request here:
https://www.photrio.com/forum/threads/ohnar-zoom-reverser-queries.170505/

tonyowen · Nov 8, 2019

AgX said:
I thought I gave all answers already on your request here:

Some things yes, it is the recommendations and specific notes from the manufacturer, if any, that I'm after.
Regards
Tony

AgX · Nov 8, 2019

No, I got no manufacturer's manual of your very model. My comment on the lens part of your model was just an assumption.

However the stage part of that duplicator I had at hand.

RMD · Nov 8, 2019

Tony....

I have e-mailed jpg copies of the two pages of the manufacturer's instructions that came with the duplicator.

Malcolm.

tonyowen · Nov 9, 2019

RMD said:
Tony....I have e-mailed jpg copies of the two pages of the manufacturer's instructions that came with the duplicator .Malcolm.

Yes, thank you very much Malcolm. The information in the manufacturer's instructions corrected/clarified several assumptions I had made prior to having your jpg's and has given me a greater understanding of how the copier can be used.
Many thanks again
Tony

AgX · Nov 9, 2019

tonyowen said:
I've just got an Ohnar zoom reverser but when I use t with a Nikon F65 OR D50 then I cannot see the image even when looking into a bright light.

And what was the reason that you did not see an image?

tonyowen · Nov 10, 2019

AgX said:
And what was the reason that you did not see an image?

Reason:- needs a very bright light circa 500w and the diffuser open to see image clearly. Aperture is f16 to f32 dependant of zoom position.
Using flash, ps and ice works - for me to copy 35mm slides on a Nikon D50 camera.

regards

tonyowen · Nov 10, 2019

Mr Jeremy S Rundle said:
It is so easy do you NEED instructions ?????

not instructions per se, but it is a good starting point rather than assuming/guessing what will work and thence by trial and error determining what does yield the desired results

regards

AgX · Nov 10, 2019

tonyowen said:
Aperture is f16 to f32 dependant of zoom position.

Thank you. I did not think of such. But now I remember once having a similar kind of slide duplicator in hand and its lens was a joke, a tiny joke...

My advice: Forget about that zoom lens, keep just the stage and mount on a bellows apparatus with more appropriate optics as a reversed standard lens or an enlarger lens, or mount it in front of a macro lens, in both cases you not necessarily need a second bellows but could improvise on bringing the stage at coorrect distance and perpendicular to the lens. the gap you may bridge by a black cloth or similar shade.

MattKing · Nov 10, 2019

Mr Jeremy S Rundle said:
It isn't as if it is costing anything it is free to use digital, and to be honest I have reached 60 and never read an instruction manual in my life, from the first VCR to my Top Nikons

Sounds like some of my customers from the days when I worked in retail

AgX · Nov 10, 2019

Mr Jeremy S Rundle said:
... to be honest I have reached 60 and never read an instruction manual in my life, from the first VCR to my Top Nikons

I envy you.
I often wonder why on some matters people ask for instructions as things seem selfexplanatory. But there are also even "classic" cameras I myself could not handle without manual, as the Canon T90 or its dedicated flash. And there are a lot more of such from the 80s already.

And even Zorki may have some quirk one better knows by reading the manual...

tonyowen · Nov 10, 2019

AgX said:
And even Zorki may have some quirk one better knows by reading the manual...

Absolutely right, I've had Voightlander, Exacta 's Leica's [M &R] Hasselblad's, Linhof's and now Nikon, and have always read the user manual., The purpose and content of the user manual is always advisory. It gives the user knowledge that can be used or ignored, but essentially it is a baseline from which to grow. Like driving a car, piloting a boat or plane, one needs instructions [or an instructor]. To deliberately not read available instructions or to do without an instructor can lead to danger or damage or to miss out on the potential of the item. Only the inventor has no user instructions, but even the inventor has and uses knowledge from others.

regards

Marc Vermont · Oct 7, 2020

I am a novice camera user so please excuse any improper terminology. I bought an Ohnar slide duplicator to convert 35mm slides using my Canon EOS 50D camera. The problem I am having is the magnification at 1x with the duplicator is cropping too much of the slide out (too much zoom at 1x). I am unable to go lower than 1x because the Ohnar tube is limited to 1x-2.5x. I bought a bellows but that increased the zoom. I cannot figure out how to bring the entire slide into the cameras field of vision. Please offer any solutions.

Dan Fromm · Oct 7, 2020

Sensor 22.3 x 14.9 mm CMOS sensor

slide 24 x 36

You're cooked. You need an FX format DSLR or a slide copy attachment that offers lower magnification. I'm not in that part of photospace so can't suggest which slide copy attachment would work for you.

neilt3 · Oct 7, 2020

As already pointed out , your trying to copy a "full frame" slide on a "half frame" camera .
Or thereabouts .
As your slide copier was designed for one film camera to copy another piece of film it was never designed to project the full frame into a small area of the film used to copy it as it would leave a lot of blank film around it .

If you want to use this device to copy film at 1:1 then you need a full frame camera .
Depending on budget , if you want to stick with Canon , you might want to look at an original Canon EOS 5d .
typically these sell for around £200 .

Also , as this is an analogue photography forum only , you might want to ask more about digitalising film in the Hybrid photography forums , in particular the scanning and scanners sub-forum , where there is already a lot of information on using DSLRs to digitalise film .
https://www.photrio.com/forum/forums/scanning-and-scanners.361/

Marc Vermont · Oct 7, 2020

Thank you Dan Fromm and neilt3 for your quick reply.

User instructions for ohnar zoom reverser slide copier

Moderator

Privacy & Transparency

Privacy & Transparency