K5 performance
It didn't give a 22 bit output; the Digital-Analogue converter was overkill as it only output 10 or 12 bit of info to the end user! I think the 22-bit sampling might have just helped get a little more useful info from the sensor!
Andy
12 bit and 14 bit RAW
Cameras are often advertised as capturing 12 bit or 14 bit RAW images. You might wonder how do these values correlate with the color depth of a camera. The 12 bit and 14 bit values are per-color values, e.g. 12 bits for each of red, green and blue, resulting in a possible 36 bits total, whereas color depth is measured in bits for each pixel (made up of the three colors). According to DxOMark's measurements though, even the best cameras only capture about 22 bits out of the possible 36 or 48 bits
Hope that helps.
John K
quite a lot and that might help although I'm not entirely sure what it does.
Perhaps David Storm's suggestion for warming up the in-camera WB might help you with the K5 Andrew. You shoot RAW and get some amazing pictures so there can't be much wrong with your K5. I know your K10 shots, particularly the black and whites, are superb.
David
PS In my pioneer days with digital photography (I was late in coming from film to the new technology) I progressed from the Ist Ds to the then brand new K10 and was disappointed at the increased noise and duller colours it produced, until I got used to the K10 and changed my approach to PS processing.
PPG: http://www.pentaxphotogallery.com/artists/davidtrout
I am investing in a Pentax eyepiece magnifier which should allow more precise focus when using manual lenses, which by the way was a major influence in purchasing Pentax.
The other are which i am changing is to stop down an aperture especially in some of the Grab shots.

(Compulsive Obsessive Lens Buying Addiction Syndrome)
What you need are lenses, more lenses, bigger lenses, better lenses, faster lenses, vintage lenses and when you have these, your pictures will be perfect!
That looks a stunning image...
David
It is a stunning image, BUT it is back-focussed slightly and this is making it look flatter and not as 3 dimensional as it should be. The sharpest focus in this shot is in the lady's hair and not on the eyes.
Have you checked the AF adjustment on your K-5 with each lens you own? It may make a huge difference, it is item 26 in the camera menu and allows an adjustment of -10 to +10. Minus pushes the focus back, whereas plus brings it forward.
If the image was shot with a manual focus lens then you have just missed the focus slightly.
There is nothing else wrong with the image, colours, vibrancy etc. are spot on IMO.
Stopping down a little may have helped this shot, but I am not a fan of this as it will in itself make your images look flatter. Shallow DOF is a great asset in making your portraits look more dynamic and interesting, but you have to make sure the focus is 100% spot on.
Regards
David
That looks a stunning image...
David
Regards
David
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
I've never used "old glass" on the K5 but only own a couple of decent Pentax lenses. A Tamron 17-50 has been fitted from new, so that may be the problem, despite its good reputation.
Perhaps, as Jim Richardon said, I just need to "stand in front of more interesting stuff."
Andrew
"These places mean something and it's the job of a photographer to figure-out what the hell it is."
Robert Adams
"The camera doesn't make a bit of difference. All of them can record what you are seeing. But, you have to SEE."
Ernst Hass
My website: http://www.ephotozine.com/user/bwlchmawr-199050
http://s927.photobucket.com/home/ADC3440/index
https://www.flickr.com/photos/78898196@N05
Also agree that individual lens focus adjustment is essential to optimise focussing, especially for closer subjects. One other thing I'd recommend which might have helped in the focus on the girl's eyes in the above picture, is selecting centre-point focus rather than the auto-multi-point option, which might have decided that the girl's hair had more contrast, which may be why it focused there. My camera tends to live on centre point, except for using the set option is specific circumstances.
Just an additional thought. Otherwise, great job
Thanks with all comments
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4934 posts
15 years
Sheffield,
England
Maybe it's me, maybe it's my copy of the K5, David. Certainy your wonderful photographs show what the camera is capable of producing.
The K10 will no doubt produce a warmer image, but this is easily remedied on the K-5 by setting the WB to a warmer setting (as mentioned previously, mine is usually on 'Daylight' or 'Cloudy', with an additional 1 position adjustment towards Amber). My feeling is that all of the required quality, sparkle and 3 dimensionality is present there in the RAW files and just needs bringing out. I agree with you that David Trout's images are anything but dull and lifeless and I don't think mine are either!
I also wonder whether any of the lenses you are using are a contributory factor? I know you use a lot of older glass, much of it not 'Pentax' glass. Like one of the previous posters I find the Pentax lenses produce the most pleasing colours and this holds true in general for older lenses as well as modern ones.
Regards
David
Nicola's Apartments, Kassiopi, Corfu
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