Sigma DP2 Merrill: Have any of you tried it?
/forum/topic/1150855/77

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vaflower
Registered: Oct 21, 2012
Total Posts: 148
Country: United States

veroman wrote:
The majority of DP2M images I'm seeing in this thread appear way over-sharpened to my eyes; sharper than real life, in fact. Any number of them exhibit obvious sharpening halos. I have to assume this is the result of over-zealous processing. Come on now ... super-duper-sharpness isn't what matters in a photograph. Not even the very best MF film shots are this sharp.
- Steve


The default sharpness in SPP should be at -1.5 to -2 which is what I always applies. Still the DP2M images have a natural punch and sharpness beyond normal sharpening. I did use optimal clarity + sharpening with Canon files and they often do not match the punch and details in DP2M images.
So I think the Feveon sensor do contribute something special.



itai195
Registered: Aug 08, 2011
Total Posts: 1207
Country: United States

vaflower wrote:
Did you use the color mixer in SPP ? I am hopelessly incompetent in that front. How does the color mixer impact a B&W image ?


It's akin to applying a digital color filter. If you've used the color filter setting in Silver Efex Pro, it's basically the same idea presented a bit differently. In SPP the main thing I've used it for is to reduce noise in high ISO b&w by applying a mild blue filter. I've gotten nice results up to ISO 800 that way, but I suspect you probably could go even to 1600 if you don't mind a little grain in you b&w.



Chrissearle
Registered: May 22, 2012
Total Posts: 240
Country: France

sculptormic wrote:
veroman wrote:
The majority of DP2M images I'm seeing in this thread appear way over-sharpened to my eyes; sharper than real life, in fact. Any number of them exhibit obvious sharpening halos. I have to assume this is the result of over-zealous processing. Come on now ... super-duper-sharpness isn't what matters in a photograph. Not even the very best MF film shots are this sharp.
- Steve



I am wondering about this statement As long there are no halos: can a photo ever be to sharp?
Aren't we discussing the sharpness of lenses all the time.

May be not so for portraits of people/ ladys above let's say 50. That would be very confronting.
(BTW Although Hulyss Bowman makes beautiful portraits with the DP3m, albeit mostly from the young and beautifull.)
But for architectural, flower or landscape/city shots I don't mind sharpness. When I look at these kind of files of my NEX-7 at 100% it looks like there is a veil in front of the detail. Very confusing


Absolutely! I love the very sharp 'Foveon look' but I hate sharpening artefacts ( which I do see on some photographs from these cameras). As far as I am concerned, as long as there are no halos or other gremlins, I'll settle for the super sharp look over the 'digital mush' that my 5D3 CR2's make from (eg) distant foliage any day.



edwinIII
Registered: Apr 15, 2011
Total Posts: 262
Country: United States

Here is another try. This image is a type of scene I like to photograph, but not meant to be anything special. Just trying to get to know the camera and learn how to best post process. This has WB set to sunlight, color mode at standard, color adjustment at 8Y. Noise reduction turned off. Taken with the DP1M.







100% Crop. Sharpening set at -1 in SPP with no other sharpening applied.







sculptormic
Registered: Feb 05, 2012
Total Posts: 1475
Country: Netherlands

Time for some images again from this "problematic" camera. :-)

Facades from Cuba































carstenw
Registered: Dec 26, 2005
Total Posts: 15971
Country: Germany

Ah, problems problems problems



carstenw
Registered: Dec 26, 2005
Total Posts: 15971
Country: Germany

edwinIII wrote:
100% Crop. Sharpening set at -1 in SPP with no other sharpening applied.







That crop looks problematic, with odd zones of sharp and soft. Did you try - 1.5 or -2, as suggested? Could it be a JPG compression problem, i.e. the quality is too low?


rattymouse
Registered: Feb 04, 2006
Total Posts: 4919
Country: China





















kosmoskatten
Registered: Oct 11, 2005
Total Posts: 3027
Country: Sweden

carstenw wrote:
edwinIII wrote:
100% Crop. Sharpening set at -1 in SPP with no other sharpening applied.







That crop looks problematic, with odd zones of sharp and soft. Did you try - 1.5 or -2, as suggested? Could it be a JPG compression problem, i.e. the quality is too low?

Was it windy that day? Wind playing havoc with branches perhaps. Other than that I could imagine that it would be a Jpeg related issue for sure.

Even though some files are said "not to be altered" when uploading within restriction limits to some image hosts there is still a difference between viewing it through preview and/or in photoshop versus online viewing, the latter more often than not looking worse. Why it is so I have yet to figure out.

Edit: Carsten: the soft mush in the middle is hard to explain though.


carstenw
Registered: Dec 26, 2005
Total Posts: 15971
Country: Germany

There are *two* bands of much in the straw, with a layer of sharp in between. It could be JPG compression, since it might align with two bands of straw tips, but it could also be something more inherent in the file.



edwinIII
Registered: Apr 15, 2011
Total Posts: 262
Country: United States

carstenw wrote:
edwinIII wrote:
100% Crop. Sharpening set at -1 in SPP with no other sharpening applied.







That crop looks problematic, with odd zones of sharp and soft. Did you try - 1.5 or -2, as suggested? Could it be a JPG compression problem, i.e. the quality is too low?

The wind was gusting frequently which is my guess to the zones of softness. I did look at the image at -1.5 and -2 and the softer zones are still visible in SPP. I did not find the sharpness at -1 to be too much despite some of the zones of softness. I do find myself backing of the sharpness a little more with the DP2M now that I am starting to see some of my previous processing faults. What intrigued me about the DPM files was the perceived sharpness at distance.


sculptormic
Registered: Feb 05, 2012
Total Posts: 1475
Country: Netherlands

Another problematic picture.

Design "Landscape" from Normandy.







kosmoskatten
Registered: Oct 11, 2005
Total Posts: 3027
Country: Sweden

Yes Michiel I can see apparent magenta and green "banding" in the picture.

Also the tree foliage has splotches of green and brown.

A very, very problematic picture.



asbalyan
Registered: May 28, 2003
Total Posts: 378
Country: United States

No Merrill Pic... Oldie goldie DP1s modded to IR...
Real problematic result.. Not able to find best sharpening way for IR with this sharp sucker...



Sorry.. No Merrill...
Hopefully someone will post IR with M now....



carstenw
Registered: Dec 26, 2005
Total Posts: 15971
Country: Germany

edwinIII wrote:
carstenw wrote:
That crop looks problematic, with odd zones of sharp and soft. Did you try - 1.5 or -2, as suggested? Could it be a JPG compression problem, i.e. the quality is too low?


The wind was gusting frequently which is my guess to the zones of softness.


I am not so sure... Some of the softness seems to be parts of straws, whereas other parts of the same straws are tack-sharp. I think it must be something image oriented, somehow...



dovey
Registered: Feb 05, 2012
Total Posts: 112
Country: Australia

I wrote a few days ago about how this camera was giving the odd image with only half green and half red colours.
I sent the images in to the local Sigma service centre and they feel that there is a problem and wan to see the camera. Will give you more information once Sigma has seen the camera



millsart
Registered: Apr 29, 2009
Total Posts: 4992
Country: N/A

Good old Dublin, Ohio and the crazy Indian head statue that from the road I always thought was some sort of a ruins of an old buildings foundation lol



inglis
Registered: Feb 24, 2011
Total Posts: 328
Country: United States

Thanks Millsart!
was thinking I really needed to go to Egypt



asbalyan
Registered: May 28, 2003
Total Posts: 378
Country: United States

millsart wrote:
Good old Dublin, Ohio and the crazy Indian head statue that from the road I always thought was some sort of a ruins of an old buildings foundation lol



Didnt know about this till few days back... Have been to the riverside road hundreds of time...

For the one who wants to know some ref to this statue (Chief Leatherlips Monument),

http://www.roadsideamerica.com/story/9791



rattymouse
Registered: Feb 04, 2006
Total Posts: 4919
Country: China







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