I made some lens tests

[Jo Geier]

Schneider APO-Symmar 5.6/180mm

[Jo Geier]

Sinaron S 5.6/210mm

[Jo Geier]

Sinaron S 5.6/300mm

[Ken Lee]

In order to appreciate the difference in blur rendition (and not be confused the effect of longer and shorter lenses), it's best if the subject appears the same size on the ground glass on all images and that we not crop the digital image files at all.

If you take your photo with a 300mm lens at 5 feet away, then you will get roughly the same magnification at 2.5 feet with a 150mm lens, etc. Otherwise, we are comparing apples to oranges as they say.

If you place a card in the scene which identifies each lens and f/stop used, there is no need to label or track the images: they are self-documenting.

[Nathan Potter]

HI, I started to collect some vintage and modern LF lenses as I didn't knew which kind of I actually wanted so I got a few and made a digital "test" with them.
I don't know if this against some rules of this forum because I just put my Panasonic GH2 behind my Sinar P2 and put one lens in front.
I always took one image wide open, all of one "model", my 4x5" Cham.

So, I will just post the images here with the lens name above.
No image is sharpened or softened, not photoshoped.
Maybe I added some light but no contrast.
This is NO professional test.

JG

Not a professional test indeed. Can you draw any conclusions from these tests yet?

Nate Potter, Austin TX.

[Jim Noel]

So, what do you want from us?

[Jo Geier]

Since aperture influences the look of the image, you might find it instructive to share that information too.

It's good that the Sinar is on a tripod, but if the digital camera with with you made these images was not, then your images may not consistent.

The fewer the variables we introduce when testing, the better.

Dear Ken,
the camera is directly mounted on the P2 so no other tripod is needed.
As mentioned in the firts post all images are taken with aperture fully open.
JG

[Jo Geier]

I do not want anything.
My concluson is that the Protarlinse has a very creamy look, which I like.
Also the Apo-Lanthars are very sharp and good in contrast.

[Jo Geier]

In order to appreciate the difference in blur rendition (and not be confused the effect of longer and shorter lenses), it's best if the subject appears the same size on the ground glass on all images and that we not crop the digital image files at all.

If you take your photo with a 300mm lens at 5 feet away, then you will get roughly the same magnification at 2.5 feet with a 150mm lens, etc. Otherwise, we are comparing apples to oranges as they say.

If you place a card in the scene which identifies each lens and f/stop used, there is no need to label or track the images: they are self-documenting.

Thank you Ken for your input.
I will try to do that.
Still learning and trying to improve.
JG

[E. von Hoegh]

I do not want anything.
My concluson is that the Protarlinse has a very creamy look, which I like.
Also the Apo-Lanthars are very sharp and good in contrast.

Try a Dagor or Dagor type at f:16. Creamier!