Discovering the SD15...

xpatUSA wrote:

I have owned 3 SD14s. From raw with correct WB they all produce oversaturated greens in SPP 3.5 or SPP 5.5.

So why does the SD14 appear in the above list? Was the SD14 included in the above quote as a sweeping statement? AFAIK, the quoteé has never owned an SD14. A sample of three beats a sample of none any day

I am quite tired of this kind of argumentation. I own three Morris Minor, so I must know more about you about Morris Minor, as you have owned none. That kind of argumentation is generally false.

Moreover, I only claim what I have seen in this forum. It might be that I am totally wrong because the users here are color blind or have uncalibrated monitors. Not likely, but possible.

As noted by many, JPEGs from the SD14 do have a green cast - that was the reason I sold my first SD14 which was intended to replace a Nikon D50 for general purpose shooting.

The SD14 has lots of color (and other) problems. It is considered the most error prone cameras in the Sigma digital camera series. My guess is that one of the main reasons for introducing the TRUE engine was the problematic SD14. To bring some order.

I will also mention that recently purchased DP1s and DPs had very good grass color rendition based on a limited outside session, and will ask the same question as above.

I am only talking abot flower photography. So, show me some (brightly colored) flower photos (that not are manually corrected) that contains green, naturally looking helthy grass.

I have owned many SD9s and SD10s - without exception, all produced desaturated greens and DCraw produced slightly purple skies. Not a portrait guy, so no comment on yellow faces.

Yes, the SD9 and SD10 are not all that reliable color cameras. The worst that I have seen was a cyan beach in Hawaii. It was supposed to be totally white sand. The beach was not blue tinted (maybe from the blue sky), it was clear cyan. And the photographer claimed no post processing.

My opinion is that camera profiles, e.g. *.dcp, can be used for any Sigma camera to fix any of these ills - just as Bayer shooters already do, see ACR - and just as can be done in RawTherapee which I have successfully used for brown reds under CFL lighting for the SD9.

There is an application called CoCa which can produce a camera profile from a Macbeth card shot. I have done that for Merrill shots produced by DCraw but sold the SD1M before finalizing that work.

Maybe. But are you sure you can find generally useful profiles when Sigma cannot? That you can do so in some studio situations with controlled lighting I fully believe.

I will further state that the sensors are all quite close to to each other as far as sensor output is concerned

That I do doubt.

and the color differences that we whine about are due to the different conversion used for each succeeding model. Sigma can't even get the max possible raw output for a sensor from each model the same:

SD9 - up to 12,000 or so.

SD10 - up to 14,000 or so.

SD14 - up to 10,000 or so.

DP1&DP2s - up to 2,000 or so.

SD1M - up to 4,000 or so.

Above list has nothing to do with well capacity, so no obfuscation needed there, thank you.

Yes, this is annoying. But, it seems like they fixed this anomaly with the Merrill cameras. There they fill the 12 and 14 bits.

Here's hoping that Kalpanika will handle all model variations and perhaps even provide the ability to use camera profiles (asking a bit much, I know)

Or main goal is right now to handle the modern cameras - the Merrill and the Quattro. Excwept for some green cast, they seem to be quite well calibrated. And this green cast is probably because we are not getting the correct black level.