SLT-A99V Color Contamination

Started Mar 29, 2013 | Discussions thread
OP samael9 Junior Member • Posts: 32
Re: SLT-A99V Color Contamination

VirtualMirage wrote:

Can you give a bit more info on what you are doing with the image?

Did you shoot RAW or JPEG?

Was any post processing done to the image?  If so, with what software and what did you do?

From what I am seeing it looks like you are getting posterization occurring in the shadows.  I am seeing it on the wall, in her hair, on her face, and all over her jacket.  I see this occur more when their is an attempt to extract more out of the image than what is there, poor image compression techniques, or through different kinds of post processing or filters being used.  There are a couple of other possibilities, but most that I have seen were due to post processing or the RAW converter being used.

Do you have a shot of the original, untouched, image that came directly from the camera?


Also, do you have any EXIF information from those shots that you can provide (ISO, shutter speed, etc.)?


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Thanks Paul! The images are all captured in RAW only and uploaded straight into Aperture 3.4.3. Given my experiences with the A99 in jpeg in low light, I'll never use it for jpg's and that's not why iI bought it I have an X-E1 for that, which is killer in jpg.
Yup, posterization, but these are pre-post, so I'm not cranking sliders. I'm very familiar with posterization when over-doing levels or curves. That's what's so perplexing to me. I shoot in Manual most all the time with all the in-camera settings set to 0 (STD). I don't like letting the camera do *anything* for me... and, these are pre-fiddled-with. ???
The one of Poe with my watermark and the woman I went ahead and finished in Ps CS6 Extended because they were usable. The other ones are untouched except converted to jpg in 3.4.3 so I could upload the files for Sony's inspection and ours too.
Again, the problem is in-camera, pre post and I calibrate my monitor weekly. The only thing I am admittedly unsure of is could I have seen this in-camera either in the EVF or LCD before ejecting the card and uploading into Aperture.

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