Author Topic: Painting with Lenses  (Read 44664 times)

Frank Fremerey

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Re: Painting with Lenses
« Reply #105 on: January 10, 2016, 01:18:12 »
I cannot swear to it but this is in a downpoar lit by street lamps quite possibly the D70 with a 2.0/24mm @2.0
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Dr Klaus Schmitt

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Re: Painting with Lenses
« Reply #106 on: January 16, 2016, 11:06:56 »
ISCO-Optic f2 90mm projection lens

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Thomas G

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Re: Painting with Lenses
« Reply #107 on: January 17, 2016, 00:01:37 »
Df, 50mm f/1.2, step up ring, 6T @ f/1.2, t/80s


decay painted right by lumofisk, on Flickr
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Bjørn Rørslett

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Re: Painting with Lenses
« Reply #108 on: January 17, 2016, 02:28:55 »
Klaus: that projection lens draws surprisingly sharp, at least in the centre of the frame.

Thomas: A Physalis fruit lights up. Nice.

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Re: Painting with Lenses
« Reply #109 on: January 17, 2016, 13:26:29 »
Klaus: that projection lens draws surprisingly sharp, at least in the centre of the frame.

Thomas: A Physalis fruit lights up. Nice.

Yes indeed, many of those Double Gauss projection lenses do, but so far the best I have found are the Zeiss Jena VISIONAR lenses, the last ones ever designed by Zeiss Jena.

fully open


and slightly stopped down for f2.8 (this is a f1.6 100mm one with surgically implanted iris)


very nice (for me that is) smooth bokeh they have (there is a whole series of focal lengths), again the f1.6 100mm here:




However, they are not apochromatic, so show some CA at times (which can easily be hidden in the BG)
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Fons Baerken

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Re: Painting with Lenses
« Reply #110 on: January 17, 2016, 13:38:54 »
Klaus wonderful images

Dr Klaus Schmitt

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Re: Painting with Lenses
« Reply #111 on: January 17, 2016, 13:42:28 »
Klaus wonderful images

Thanks, I remember, we talked about that lens Fons  ;)

One of my currently most often used lenses.

Just in case that would be of interest, here are two albums with images I took using this lens:
https://www.flickr.com/photos/kds315/albums/72157656458555811 and https://www.flickr.com/photos/kds315/albums/72157648961220894

Prices on ebay for those are about 10x by now as they were before  ;)

Just one CAVEAT: they were designed for projecting 35mm film (18x23mm format, 30mm diagonal), so are not designed for FF sensors, they do fill the frame of course even at infinity, but with loss of IQ towards the outer parts; an effect which can be used very well for centered motives like flowers. The degradation of IQ is very smooth though. That lens resolves less than 20 micron in its corners, 10 micron center which is equivalent to a resolution of 50 lppm center / 25 lppm corner (lppm = line pairs per mm; Zeiss Jena data).

Shorter focal lengths cannot be adapted due to a too short BFL and from 119mm onwards speed is decreased to f1.9, 109mm and below are all f1.6. They all work very well up to infinity of course.



Three professionally converted ones, rightmost is mine. Leftmost has Canon EF and Nikon mount (exchangeable custom mounts with focus correction)
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Michael Erlewine

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Re: Painting with Lenses
« Reply #112 on: January 17, 2016, 14:47:07 »
Klaus: What would we need to convert one of these to a Nikon mount?
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Airy

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Re: Painting with Lenses
« Reply #113 on: January 17, 2016, 22:24:32 »
Voigtländer 58/1.4 at f/2. I do not like the framing (all my fault, needless to say), but that's to illustrate the effect (brushstrokes).
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Fons Baerken

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Re: Painting with Lenses
« Reply #114 on: January 17, 2016, 22:32:49 »
Klaus projector lenses seem to work best at mirrorless cameras.



Df lensbaby 56/1.6 velvet

Dr Klaus Schmitt

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Re: Painting with Lenses
« Reply #115 on: January 18, 2016, 08:10:44 »
Klaus: What would we need to convert one of these to a Nikon mount?

It has been done already by a guy in Poland (leftmost image of those three in a row), took three months to complete
and will PM you the price, wasn't cheap as it is lots of very precise work needed. He has doen two such conversions,
my friend owns one and might be willing to let it go...

But be reminded again, that it is NOT apochromatic, there is magenta / green CA visible in OOF (out of focus) areas.
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Frank Fremerey

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Re: Painting with Lenses
« Reply #116 on: January 18, 2016, 10:24:16 »
Motivated by this thread I just bought a Biotar 2/25 (38,10€ incl shipping).

I will now dive into adapting it to my nikon an be ready for springtime...

Any opinions on that lens for "painting light"
You are out there. You and your camera. You can shoot or not shoot as you please. Discover the world, Your world. Show it to us. Or we might never see it.

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Dr Klaus Schmitt

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Re: Painting with Lenses
« Reply #117 on: January 18, 2016, 12:34:04 »
Motivated by this thread I just bought a Biotar 2/25 (38,10€ incl shipping).

I will now dive into adapting it to my nikon an be ready for springtime...

Any opinions on that lens for "painting light"

I will most likely show quite some vignetting. I assume it is the one for the HK8 movie camera for 8mm format.
Not even sure the back focal length will be sufficient. I barely got the 40mm Sonnar of that series converted to
my mirrorless (!!) camera.

What was your decision based upon??
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Frank Fremerey

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Re: Painting with Lenses
« Reply #118 on: January 18, 2016, 13:40:29 »
I will most likely show quite some vignetting. I assume it is the one for the HK8 movie camera for 8mm format.
Not even sure the back focal length will be sufficient. I barely got the 40mm Sonnar of that series converted to
my mirrorless (!!) camera.
What was your decision based upon??


just a feeling I read something somewhere about the and the idea to see how far a little bricolage might
get me.  If decision proofs to be wrong I might resell it without loss.
You are out there. You and your camera. You can shoot or not shoot as you please. Discover the world, Your world. Show it to us. Or we might never see it.

Me: https://youpic.com/photographer/frankfremerey/

Dr Klaus Schmitt

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Re: Painting with Lenses
« Reply #119 on: January 18, 2016, 17:36:47 »

just a feeling I read something somewhere about the and the idea to see how far a little bricolage might
get me.  If decision proofs to be wrong I might resell it without loss.

OK, wish you luck then!   :-)
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