Summar

[Erik van Straten]

I'd like to know more about vignetting with this lens, wide open. How would you describe it (slight / moderate / heavy)? By what f-stop is it more or less gone? How does it compare to a standard Elmar 5cm 3.5, when it comes to vignetting? thanx

@ f2 see the pictures [NODE="1"]1[/NODE] and 51 above.

Erik.

 

[Erik van Straten]

I'd like to know more about vignetting with this lens, wide open. How would you describe it (slight / moderate / heavy)? By what f-stop is it more or less gone? How does it compare to a standard Elmar 5cm 3.5, when it comes to vignetting? thanx

This was shot wide open, there is no vignetting. All composite lenses have a kind of vignetting, the corners get a slightly narrower illumination because of the tube effect, but the latest Summicrons have that too.

This photo was taken at full aperture. The vignetting is hardly visible. It is important not to use a lens hood that is too long. The best lens hood for the Summar is the Leitz FOOKH.

Erik.

 

[Erik van Straten]

The Leitz FOOKH is a good lens hood for the Summar. Do not use a FLQOO or a FISON, they vignette, and a FIKUS is top heavy. It falls off all the time.

Erik.

 

[Andrea Taurisano]

Thanks Erik. I'm actually considering a Summar hoping that it would give more vignetting than the Elmar 5cm 3.5 does. My 2 Elmar samples have close to none, judged by my standards (where the vignetting of a Lomo LC-a @ 2.8 is the ideal). But I'm talking about light fall-off, not mechanical vignetting due to excessively long lens hoods.

 

[Erik van Straten]

Thanks Erik. I'm actually considering a Summar hoping that it would give more vignetting than the Elmar 5cm 3.5 does. My 2 Elmar samples have close to none, judged by my standards (where the vignetting of a Lomo LC-a @ 2.8 is the ideal). But I'm talking about light fall-off, not mechanical vignetting due to excessively long lens hoods.

There is only a very slight light fall off with a Summar. The lens is of course designed to have as little as possible light fall-off.

It is however easy to make a lens that vignettes yourself. Make a small cylinder of cardboard that fits on the lens and make it black inside. Or put a FIKUS lens hood on the lens. That's an extendable hood. The further you extend it, the more vignetting you get.

It's hard to find a lens that fits on a Leica that naturally vignettes. The designers of the Leica lenses tried to avoid vignetting as much as possible.

Erik.

 

[Coldkennels]

It's hard to find a lens that fits on a Leica that naturally vignettes. The designers of the Leica lenses tried to avoid vignetting as much as possible.

I'll agree with this. I was scratching my head thinking about it and it's only really the wides and superwides that start exhibiting vignetting; Voigtlander's Super Wide Heliar can get a little dark in the corners, and I've pretty sure I've seen the 28mm Soviet Orion-15 get a bit dark in the corners wide open at f/6 (by which point it's got other problems to worry about anyway!). Even so, neither of them get even close to the LC-A's vignetting; you'd have to get one of Lomography's M-mount recreations of the Minitar to accurately recreate that look.

 

[Erik van Straten]

It is also possible to make a black cardboard cylinder and put it on the back on the lens. This will give an even more "natural" vignetting.

Erik.

 

[robert blu]

gelatin silver print (summar 50mm f2) leica lll

Erik.

Love so much this photo !

 

[Erik van Straten]

Thank you, Robert!

Erik.

 

[Erik van Straten]

gelatin silver print (summar 50mm f2) leica ll

Erik.