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View Full Version : Oscilloscope and copy lenses for Macro?



Drew Bedo
11-Oct-2016, 18:34
Are the lenses made for use with the old Polaroid MP-3 and MP-4 copy cameras any good for moderate LF macro imaging? What about the Oscilloscope lenses?

The O-scope gear is pretty fast wide open at f1/9. Both were used at macro ranges up to nearly 1:1. The o-scope lenses donot cover 4x5 at infinity (only 6x6 or so), but will when extended fr close focus. The Polaroid Taminons will cover at infinity..

I realize that there are really excellent modern lenses optimized by design for close-up imaging. Yet the cost of an Oscilloscope lens is very low, the Polaroid lenses too.

So then: How good (or bad) are they for macro imaging?

Jon Shiu
11-Oct-2016, 19:10
I tried an oscillo raptar once and it was horrible, and not in a good way.

Dan Fromm
11-Oct-2016, 19:12
Drew, I've tested 17, 35, 50, 75 and 135 mm MP-4 Tominons. Never had a 105 so couldn't test. None was outstanding or even very good but the 17, 35 and 50 are very usable and can be quite cost effective. I wouldn't have another 75 or 135, they're lousy and too light to make good paperweights.

Polaroid's recommendations:

MP-4 Tominons' recommended magnifications, from MP-4 documentation
focal length (min magnification to cover 4x5) recommended magnifications type

135 mm 1x - 3x Tessar
105 mm 1x - 4x Tessar
75 mm (2x) 2x - 6.5x reversed Tessar
50 mm (2x) 2x - 9.8x 6 group symmetric triplet (sic)
35 mm (5x) 5x - 14x reversed Tessar
17 mm (10x) 10x - 32x 6 element 4 group

I've bought a number of o'scope lenses to harvest shutters from, wouldn't bother with them for close-up work. If you can't afford better, by all means try one, otherwise work out a way to use a process lens. These days quite decent Soviet process lenses can be bought for < $50 or so delivered.

Mark Sawyer
11-Oct-2016, 20:07
These days quite decent Soviet process lenses can be bought for < $50 or so delivered.

On that topic, Dan, do you (or does anyone) know if the 300mm f/4.5 Industar is a process lens or a general purpose lens? I have one, and it performs quite well close up, but f/4.5 is awfully fast for a process Tessar.

IanG
12-Oct-2016, 00:14
On that topic, Dan, do you (or does anyone) know if the 300mm f/4.5 Industar is a process lens or a general purpose lens? I have one, and it performs quite well close up, but f/4.5 is awfully fast for a process Tessar.

It's just a general purpose Tessar type lens..

I have a couple of oscilloscope lenses a 90mm f1.9 Dallmeyer and a 3" (75mm) f1.9 Wollensak, I bought the second for 10 ?$12 purely for the Alphax #3 shutter. They just aren't any practical use for anything other than their original use.

I also bought a105mm Tominon cheap in mint condition mainly for the shutter, surprisingly it illuminates a 5x4 screw at Infinity but as Dan says I don't expect high quality results.

Ian

Leigh
12-Oct-2016, 01:27
Oscilloscope displays are usually green, occasionally blue.

In any case, they're monochromatic, so no need to correct the lenses for chromatic aberrations.

A copier lens would be different, particularly for a color copier.

- Leigh

LabRat
12-Oct-2016, 02:11
I also bought a105mm Tominon cheap in mint condition mainly for the shutter, surprisingly it illuminates a 5x4 screw at Infinity but as Dan says I don't expect high quality results.

Ian

I had read something online about the 105mm Tominion being a very good lens, so when I restored my 2X3 SG, I had set it up for C/U, wide, and Tele use and had a nice 105 from off an O-scope camera... My example of the 105 produced very sharp/bright/contrasty results at all ranges, so it ended up on my camera as a "normal" lens... I also tried it on a 4X5, but does not cover at inf, but excellent for tabletop C/U sets... Fast and easy to focus...

I also used the 75mm on 4X5, and it does get very close, and allows tilts & swings up close, and I like that it has a nice blend into OOF areas and OK sharpness shooting 3D objects... (And good DOF stopped down, and easy to focus...) There are sharper lenses, but many ultra sharp lenses up close have a "rough" transition between ultra sharp and OOF areas, so a nice blend there...

Don't knock these lenses, they have applications... :-)

Steve K

IanG
12-Oct-2016, 03:32
Steve, now I have a 2x3 camera that I can use the Tominon on I'll test it, what I've heard over the years is the quality can be quite variable.

Ian

Dan Fromm
12-Oct-2016, 04:52
I forgot to mention that the 127/4.7 Tominon supplied with a variety of Polaroid gelcams is a decent lens, head and shoulders above the MP-4 lenses, at near (below 1:1) and great (to infinity) distances. They're not that expensive, so you might want to think about one of them, Drew.

Drew Bedo
12-Oct-2016, 08:58
Everyone: Thanks for the input.

My 75mm Tominon is currently in the FS forum if anyone is interested.

jnantz
12-Oct-2016, 09:33
I forgot to mention that the 127/4.7 Tominon supplied with a variety of Polaroid gelcams is a decent lens, head and shoulders above the MP-4 lenses, at near (below 1:1) and great (to infinity) distances. They're not that expensive, so you might want to think about one of them, Drew.

i have a 127 f4.7 it came with a speed graphic, and i have used it for close and far focus and it has no issues with coverage or image quality.
its well worth the $$ ..

Andy Eads
12-Oct-2016, 09:51
I once had a 75mm Ysar in a Polaroid shutter. It was quite good as a close up lens - precisely what it was made for.