Sony Carl Zeiss 135 f/1.7 -- too sharp?

Wide open (f/1.7, 1/800, open shade, WB@7500K, from RAW, Maxxum 7D, ISO 100)

Unsharp maks... note the staircase in the middle, back petal. This is
apparent in the RAW file as well. See last linked image [W/O sharpening])

Downsampled
http://www.aliasimages.com/images/CZ...ICT5234SML.jpg
201K

Full size
http://www.aliasimages.com/images/CZ...rsPICT5234.jpg
761K

Section at full size
http://www.aliasimages.com/images/CZ...CT5234Sect.jpg
282K

and that's on a 6 Mpix camera. If Sony does a 12+ Mpix camera ...

(Note: focusing this thing is a challenge).

Is this lens *too* sharp for a 6 mpix?
http://www.aliasimages.com/images/CZ...4Staircase.jpg

Cheers,
Alan.


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On Jul 14, 2:40 pm, Alan Browne
wrote:
Wide open (f/1.7, 1/800, open shade, WB@7500K, from RAW, Maxxum 7D, ISO 100)

Unsharp maks... note the staircase in the middle, back petal. This is
apparent in the RAW file as well. See last linked image [W/O sharpening])

Downsampledhttp://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234SML.jpg
201K

Full sizehttp://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234.jpg
761K

Section at full sizehttp://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234Sect...
282K

and that's on a 6 Mpix camera. If Sony does a 12+ Mpix camera ...

(Note: focusing this thing is a challenge).

Is this lens *too* sharp for a 6 mpix?http://www.aliasimages.com/images/CZ...rsPICT5234Stai...

Cheers,
Alan.

--
-- r.p.e.35mm user resource:http://www.aliasimages.com/rpe35mmur.htm
-- r.p.d.slr-systems:http://www.aliasimages.com/rpdslrsysur.htm
-- [SI] gallery & rulz:http://www.pbase.com/shootin
-- e-meil: Remove FreeLunch.

The issue appears to be the angle (45 degrees) not the sharpness of
the lens. Get out some sharp edges and shoot them at various angles to
confirm.

JIm

JimKramer wrote:
On Jul 14, 2:40 pm, Alan Browne
wrote:
Wide open (f/1.7, 1/800, open shade, WB@7500K, from RAW, Maxxum 7D, ISO 100)

Unsharp maks... note the staircase in the middle, back petal. This is
apparent in the RAW file as well. See last linked image [W/O sharpening])

Downsampledhttp://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234SML.jpg
201K

Full sizehttp://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234.jpg
761K

Section at full sizehttp://www.aliasimages.com/images/CZ135f1.7/OrangeFlowersPICT5234Sect...
282K

and that's on a 6 Mpix camera. If Sony does a 12+ Mpix camera ...

(Note: focusing this thing is a challenge).

Is this lens *too* sharp for a 6 mpix?http://www.aliasimages.com/images/CZ...rsPICT5234Stai...
The issue appears to be the angle (45 degrees) not the sharpness of
the lens. Get out some sharp edges and shoot them at various angles to
confirm.

I've never seen this with another lens, including the razor sharp 100
f/2.8 ...

--
-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm
-- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm
-- [SI] gallery & rulz: http://www.pbase.com/shootin
-- e-meil: Remove FreeLunch.

Alan Browne wrote:



Didn't notice that the RAW import sharpening was on; I usually have it
at 0 to save sharpening for a last step before saving/printing.

So there is no -over sharp- issue ... how could there be?

Cheers,
Alan.

--
-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm
-- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm
-- [SI] gallery & rulz: http://www.pbase.com/shootin
-- e-meil: Remove FreeLunch.

Links don't work...

Alan Browne wrote:



Wide open (f/1.7, 1/800, open shade, WB@7500K, from RAW, Maxxum 7D, ISO
100)

Unsharp maks... note the staircase in the middle, back petal. This is
apparent in the RAW file as well. See last linked image [W/O sharpening])

Downsampled
http://www.aliasimages.com/images/CZ...ICT5234SML.jpg
201K

Full size
http://www.aliasimages.com/images/CZ...rsPICT5234.jpg
761K

Section at full size
http://www.aliasimages.com/images/CZ...CT5234Sect.jpg
282K

and that's on a 6 Mpix camera. If Sony does a 12+ Mpix camera ...

(Note: focusing this thing is a challenge).

Is this lens *too* sharp for a 6 mpix?
http://www.aliasimages.com/images/CZ...4Staircase.jpg


Cheers,
Alan.




--
Paul Furman Photography
http://www.edgehill.net/1
Bay Natives Nursery
http://www.baynatives.com

Paul Furman wrote:
Links don't work...

Various reasons, anyway problem fixed ... sharpening in CS3 RAW import.
Turn it to "0" and the problem is solved. Image is this one:

http://www.photo.net/photodb/photo?p...195464&size=lg (which is
about 35% of the original shot).

http://www.photo.net/photodb/photo?p...198220&size=lg is a nicer
photo...



Alan Browne wrote:



Wide open (f/1.7, 1/800, open shade, WB@7500K, from RAW, Maxxum 7D,
ISO 100)

Unsharp maks... note the staircase in the middle, back petal. This is
apparent in the RAW file as well. See last linked image [W/O
sharpening])

Downsampled
http://www.aliasimages.com/images/CZ...ICT5234SML.jpg
201K

Full size
http://www.aliasimages.com/images/CZ...rsPICT5234.jpg
761K

Section at full size
http://www.aliasimages.com/images/CZ...CT5234Sect.jpg
282K

and that's on a 6 Mpix camera. If Sony does a 12+ Mpix camera ...

(Note: focusing this thing is a challenge).

Is this lens *too* sharp for a 6 mpix?
http://www.aliasimages.com/images/CZ...4Staircase.jpg


Cheers,
Alan.






--
-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm
-- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm
-- [SI] gallery & rulz: http://www.pbase.com/shootin
-- e-meil: Remove FreeLunch.