Sigma DP1 Monochrome



Backs Turned Looking Down the Path, originally uploaded by jjvornov.

With this image, I’m more willing to entertain the idea that this DP1 could replace my Leica with C41 process black and white film. ISO 800 seems to be as clean and sharp as the film scans which I tend to shoot at ISO 320 to control grain. I’m giving up two stops of aperture- f/2.0 for the Summicron and f/4.0 for the DP1, so it’s overall a wash.

I’m sold on the sensor now as it’s rendering of detail can be exquisite as it is here on these wet bricks. The lack of decent light continued today, so I decided to try this in black and white.

I still struggle with Vincent Versace’s channel based conversion method, so I decided to try something different. I used the monochrome conversion in Nik Color Efex filters to produce two versions that rendered selected areas with the best light and contrast. One was red, for the bricks, and one was greenish, for the plants to the left of the walk. I stacked the images, played with their opacity and selectively masked the layers to emphasize the two areas.

Adding some gaussian blur to the asphalt of the drive was another key to making the image work for me. The texture of the asphalt was competing with the bricks and I wanted the eye to stop at the end of the walk where the pot sits. I tried to create the pot and bright leaves at left as second and third areas of visual interest in this image which is, admittedly, devoid of any content of note.

Author: James Vornov

I'm an MD, PhD Neurologist who left a successful academic career on the Faculty of The Johns Hopkins Medical School to develop new treatments in Biotech and Pharma. I became fascinated with how people actually make decisions based on the science of decision theory and emerging understanding of how the brain works to make decisions. My passion now is this deep explanation of what has been the realm of philosophy, psychology and self help but is now understood as brain function. By understanding our brains, I believe we can become happier, more successful people.

3 thoughts on “Sigma DP1 Monochrome”

  1. The DP1 interests me quite a bit. Can I assume there is no appreciable shutter-lag, ala a digital SLR?

  2. Dennis-

    Make no mistake about the DP1. While the sensor is SLR sized and quality, the associated electronics are compact camera in nature. When you use it like a point and shoot, the speed is average from turning on to capturing an image. Autofocus is slow compared to a DSLR and when light is low it may fail to focus at all and then won’t let you trip the shutter.

    However, since you can lock exposure and set manual focus, these can be made to go away. Then it’s just the lack of buffer that slows the shot to shot speed.

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