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Songyun
1-May-2009, 15:35
Does anyone know where to find the MTF curve for super symmar HM lens? I have seen the MTF curves for apo sironar w, just like to compare these two.

Eric Woodbury
1-May-2009, 15:42
for the 150

http://www.schneideroptics.com/pdfs/photo/datasheets/super-symmar_xl/super-symmar_xl_56_150_2.pdf

for all

http://www.schneideroptics.com/ecommerce/CatalogSubCategoryDisplay.aspx?CID=169

Songyun
1-May-2009, 15:44
for the 150

http://www.schneideroptics.com/pdfs/photo/datasheets/super-symmar_xl/super-symmar_xl_56_150_2.pdf

for all

http://www.schneideroptics.com/ecommerce/CatalogSubCategoryDisplay.aspx?CID=169

Thanks Eric, but that is super symmar xl, not the super symmar hm.

Armin Seeholzer
1-May-2009, 15:48
Sorry for what do you need MTF curves you should take pictures;--))))
This have been the high end lenses of Schneider about 25 years ago!

Is this not good enough for you?

Cheers Armin

Songyun
2-May-2009, 08:17
Sorry for what do you need MTF curves you should take pictures;--))))
This have been the high end lenses of Schneider about 25 years ago!

Is this not good enough for you?

Cheers Armin

I just like to see the comparison between the two lens. One is much lighter apo sironar w, and the other is heavier super symmar hm. Both have 80 degree coverage.

Eric Woodbury
2-May-2009, 13:19
I use the sironar W 150mm on my 5x7. I've had it since before they called it a W. A great lens and as you have noted, much smaller.

Arne Croell
2-May-2009, 13:39
Here is snapshot of 2 old printouts for the 150HM from the old web site; sorry I don't have a scanner at hand right now.

Ken Lee
2-May-2009, 14:47
Does the HM in the name, denote High Modulation ? In other words, are these the top-of-the-line Schneider lenses ?

Don't the curves for f/22 look very impressive - like what we see with the best small-format lenses ?

How do these charts compare with those of the corresponding Rodenstock offerings ?

In actual practice, I found that at f/22, my old 150mm Heliar did just as well (in the center anyhow) as my APO Sironar S.

Oren Grad
2-May-2009, 15:01
In other words, are these the top-of-the-line Schneider lenses ?

Ken, they're not "top of the line" any more than the Apo-Sironar-W is "top of the line" for Rodenstock. The HM and W series are specialized lenses for applications where maximum coverage outweighs other considerations like size, weight and maximum MTF at the center of the field.

The Super-Symmar HM MTF's aren't really any better than those for the contemporaneous Apo-Symmars in the same focal lengths, and the HM's are much bigger and heavier. Horses for courses.

PS: I should add, I own many of the Rodenstocks from all three series - N, S and W. For my purposes, they're all very nice optically, and the choice of which one to take along is usually just a matter of trading off coverage against size/weight. It's rare that I need to worry about the small differences in MTF.

Don Dudenbostel
2-May-2009, 15:12
I would like to comment on one of the 210 HM's I had a chance to evaluate some years back. I was interested in replacing my 210 Symmar convertible with a newer lens with less miles on it. My dealer got Schneider to send a new 210 HM for me to use for a week or two to see if I liked it. I also took a new 210 Symmar S at the same time and shot side by side in my studio. In short I was very disappointed in the color of the HM. Compared to the Symmar S it was very green. I shot the same shots on both lenses with Provia E-6 and the film was processed in the same run. No contest, I bought the Symmar S and sent the HM back.

Songyun
2-May-2009, 22:41
Here is snapshot of 2 old printouts for the 150HM from the old web site; sorry I don't have a scanner at hand right now.

Thanks Arne. :D