Coverage of Schneider Super-Symmar 110mm f5.6 XL at full aperture

[Marco Annaratone]

Does it cover 4x5 @ f/5.6 with some - yet, acceptable - vignetting? I shoot only BW.

Tnx!

[Emmanuel BIGLER]

Hello from France!

The answers to your questions can be found in the official technilcal brochure of the SS-XL-110, it can be dowloaded from here

Super-Symmar XL Aspheric 5.6/110mm (PDF)
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses/super-symmar_xl/pdf/super-symmar_xl_56_110.pdf

As you can see, at full aperture N=5.6, the SS-XL 110 covers an image diameter equalt to 70% of (2x142) mm at infinity, i.e. about 200 mm of image circle, with more than 20% of relative illumination and more than 15% of contrast on the MTF curve.


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Other SS-XL brochures found at the same location
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses

http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses/super-symmar_xl/

Schneider Kreuznach Super Symmar XL lenses

Super-Symmar XL Brochure (PDF)
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses/super-symmar_xl/pdf/brochure.pdf

Info Chart - some basic lens data (HTML)
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses/super-symmar_xl/chart.htm

Data Sheets - more technical information:

Super-Symmar XL Aspheric 4.5/80mm (PDF)
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses/super-symmar_xl/pdf/super-symmar_xl_45_80.pdf

Super-Symmar XL Aspheric 5.6/110mm (PDF)
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses/super-symmar_xl/pdf/super-symmar_xl_56_110.pdf

Super-Symmar XL Aspheric 5.6/150mm (PDF)
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses/super-symmar_xl/pdf/super-symmar_xl_56_150.pdf

Super-Symmar XL Aspheric 5.6/210mm (PDF)
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/photography/large_format_lenses/super-symmar_xl/pdf/super-symmar_xl_56_210.pdf

Explanation of symbols and nomenclature (HTML)
http://web.archive.org/web/20060316144626/http://www.schneideroptics.com/templates/nomenclature.htm

[Marco Annaratone]

Hi Emmanuel,

many thanks for the great links!

Cheers

[Bernice Loui]

Image circle and light fall off is mostly a non-issue on 4x5 at any aperture. Having used the 110mm SSXL on 4x5 to 8x10 (does NOT cover 8x10) since the late 90's when Schneider introduced this lens, it easily meets the image demands for 4x5. It has a snappy, contrastly personality image personality.


Bernice



Does it cover 4x5 @ f/5.6 with some - yet, acceptable - vignetting? I shoot only BW.

Tnx!

[Heroique]

It has a snappy, contrastly personality image personality.

Mine can be a little brusque, too, but it always apologizes in the end. :rolleyes:

[Bernice Loui]

Heh,, its been a wonderful long term relationship with this 110mm f5.6 SSXL :o
and the 150mm f5.6 SSXL too..


Bernice



Mine can be a little brusque, too, but it always apologizes in the end. :rolleyes:

[Martin Aislabie]

The 110 at wide open is not at its sharpest - particularly in the corners.

Fabulous at f/22.

Martin

[Richard Wasserman]

Fabulous at f/22.

Martin

And at f/22 it will cover 4x10, but needs a center filter to even things out.

[Marco Annaratone]

The 110 at wide open is not at its sharpest - particularly in the corners.

Fabulous at f/22.

Martin

The corners of a 4x5, you mean?

I must add that I have the both the 110mm XL and the 150mm XL. The reason I asked is that my 110mm XL is right now 800 miles away so I have no way to check in person whether it delivers objectionable vignetting or not @ f/5.6 on a 4x5. Both are very fine lenses, I used the 110mm on 8x10 color slides as well, without movements of course.

[Dan Fromm]

The corners of a 4x5, you mean?

I must add that I have the both the 110mm XL and the 150mm XL. The reason I asked is that my 110mm XL is right now 800 miles away so I have no way to check in person whether it delivers objectionable vignetting or not @ f/5.6 on a 4x5. Both are very fine lenses, I used the 110mm on 8x10 color slides as well, without movements of course.

If you'd read the charts that Prof. (retired) Dr. Bigler, who I greet in passing, directed you to in post #2 above, you'd have seen that with the lens unshifted at f/5.6 at infinity the corners of 4x5 are around 1.1 stop down from the center. This is consistent with cos^4. In other words, with this lens mechanical vignetting is not a problem.

[Marco Annaratone]

If you'd read the charts that Prof. (retired) Dr. Bigler, who I greet in passing, directed you to in post #2 above, you'd have seen that with the lens unshifted at f/5.6 at infinity the corners of 4x5 are around 1.1 stop down from the center. This is consistent with cos^4. In other words, with this lens mechanical vignetting is not a problem.

I find your lecturing tone somewhat unfortunate. In the post of mine you quote I asked about *resolution* in the corners following Martin's statement (nothing to do with vignetting then) and explained why I started the thread in the first place in spite of owning the lens. What made you assume that I had not read the charts escapes me.

Anyway, I did read the charts and there is an illumination of about 30% at the corners @f/5.6 that makes it closer to two stops. But charts shall be read with the characteristics of the subject being photographed in mind, like this shot of the Golden Gate where the corners are dark and uninteresting enough that a 110mm XL can be used on an 8x10 (Ektachrome 100). So, I would like to hear also re: field experience shooting this lens @ f/5.6. Martin, for instance, is raising an interesting issue re: resolution at the corners.

And, to avoid any further unpleasantness, yes, I have read the MTF charts :)

Regards

216001

[Dan Fromm]

I find your lecturing tone somewhat unfortunate. In the post of mine you quote I asked about *resolution* in the corners following Martin's statement (nothing to do with vignetting then) and explained why I started the thread in the first place in spite of owning the lens. What made you assume that I had not read the charts escapes me.

Anyway, I did read the charts and there is an illumination of about 30% at the corners @f/5.6 that makes it closer to two stops. But charts shall be read with the characteristics of the subject being photographed in mind, like this shot of the Golden Gate where the corners are dark and uninteresting enough that a 110mm XL can be used on an 8x10 (Ektachrome 100). So, I would like to hear also re: field experience shooting this lens @ f/5.6. Martin, for instance, is raising an interesting issue re: resolution at the corners.

And, to avoid any further unpleasantness, yes, I have read the MTF charts :)

Regards

216001

you misread the illumination chart. you wanted to know illumination at 4x5's corners, you looked at illumination at the limit of coverage, which is well outside of the 4x5 frame.

[Bernice Loui]

If the image goal is wide angle 4x5 at full aperture, one more suitable lens would be something like a 90mm f4.5 Biogon type wide angle (Zeiss Biogon for Linhof). These were optimized for good performance at full aperture. See the US military spec sheet for a biogon type made by Pacific Optical (essentially same as Zeiss Biogon) used for aero-recon.
216008

216009


The 110mm f5.6 SSXL is optimized for f16 and smaller taking apertures and might not meet your 4x5 image making needs at f5.6, regardless of light fall off and related.


Bernice