Discovering the SD15...

Roland Karlsson wrote:

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.

Yes, it generally is. But we might as well duke it out anyway, blow by blow

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.

In spite of the snide remark about users here, I have never seen on this forum any complaint about de-saturated greens with the SD14 (apart from yours). Unless you can produce a link or two to such complaints, I must assume that your memory is at fault.

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. <>

I guess that you are referring to SD14's out-of-camera jpeg color accuracy and less than perfect WB, in which case I agree.

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 healthy grass.

I will, this very day. Natural-looking healthy grass is hard to find around here but we've had some rain lately

I'm hoping we will not need spectrometer readings to complete this sub-discussion. I'll use a DP1s instead for comparison. Might provide Some Chroma numbers too. They would be a little more convincing that words like "greener", eh?

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?

Well, the phrase "generally useful" is a bit of a trap. I suppose all Sigma's modes and scenes are "generally useful". On reflection, Sigma does provide the ability to save sets of adjustments in SPP - so perhaps I'm being unnecessarily harsh. However, CoCa does use color targets and does produce a "proper" profile.

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.

Then kindly publish response graphs for, say SD14 versus Merrill or Quattro that show they are not quite close.