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Comment by JAK posted on TBA: HD PENTAX-DA 20-40mm F2.8-4 ED Limited DC WR at 07/11/2013 - 00:39
alfpics wrote:
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
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
Quote:
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
See full article here: link12 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
Comment by JAK posted on K5 performance at 06/11/2013 - 22:08
I understand. I feel sure there are some bargain K-01's on the wholesale market. I bought one on Amazon a few weeks ago at a price I couldn't refuse; not a blue one either!
I thought it would be a poor camera but far from it. Not as sophistcated as a K-5 but includes some of the more recent functional enhancements of more recent DSLR's. I've been using it for night time shots where it is superb. The simpler button layout makes it easier when you can't see them!
John K
I thought it would be a poor camera but far from it. Not as sophistcated as a K-5 but includes some of the more recent functional enhancements of more recent DSLR's. I've been using it for night time shots where it is superb. The simpler button layout makes it easier when you can't see them!
John K
Comment by JAK posted on K-01 fault at 06/11/2013 - 21:57
At 6 months you ought to get a direct replacement or a refund. Trouble is I doubt SRS would have one, but surely can source one pronto.
http://www.which.co.uk/consumer-rights/problem/what-do-i-do-if-i-have-a-faulty-p...
John K
http://www.which.co.uk/consumer-rights/problem/what-do-i-do-if-i-have-a-faulty-p...
John K
Comment by JAK posted on K-01 fault at 06/11/2013 - 21:40
It's got to be less than two years old as they weren't introduced until Feb last year so presume it is under guarantee still? (Probably depends where you purchased it.) Even if not the Sale of Goods act should apply - but that would be through the dealer, not Johnsons. If you deal direct you might break the terms of the contract.
John K
John K
Comment by JAK posted on K-01 fault at 06/11/2013 - 21:30
Falling to bits as you write?!
Oh dear.
John K
Oh dear.
John K
Comment by JAK posted on K-01 fault at 06/11/2013 - 21:04
H
By the way the K-5 images in your gallery are monochrome so its unlikely they'll look like Velvia. Many do not comment on images unless they are in need of remedial action!
John K
bwlchmawr wrote:
It's just that the results are so dull, flat and lifeless. Others feel the same: I know when I post images on here or Ephotozine the K5 shots will get a luke-warm response compared to those taken by the K10. It's not an exact analogy, but the results I get remind me of old time colour print films, whereas those from the K10 are like Fujifilm Velvia. (Not that this will mean much to most folks!)
Have you tried the K-5's reversal film setting or adjusting the custom image settings?It's just that the results are so dull, flat and lifeless. Others feel the same: I know when I post images on here or Ephotozine the K5 shots will get a luke-warm response compared to those taken by the K10. It's not an exact analogy, but the results I get remind me of old time colour print films, whereas those from the K10 are like Fujifilm Velvia. (Not that this will mean much to most folks!)
By the way the K-5 images in your gallery are monochrome so its unlikely they'll look like Velvia. Many do not comment on images unless they are in need of remedial action!
John K
Comment by JAK posted on K5 performance at 06/11/2013 - 20:41
Cheers!
Comment by JAK posted on Another photo on Look North tonight. at 06/11/2013 - 20:17
I submitted this photograph of the fireworks on the beach at Scarborough last night. If you watched the Yorkshire Look North just before 7pm tonight you may already have seen it!
John K
Comment by JAK posted on Another photo on Look North tonight. at 06/11/2013 - 19:04
Gwyn wrote:
Funny that - both my K-5 and my K5ii levels have been accurate.
My k-5 was way off.Funny that - both my K-5 and my K5ii levels have been accurate.
Just popped out and shot a view with the k-3 including the natural horizon getting the level centred.
The sea/sky line seems pretty well spot on.
John K
Comment by JAK posted on K3 has started to ship....... at 06/11/2013 - 13:52
Is it FF compatible?
Presume it has the Ricoh pin as its a Ricoh lens so you'll never need to take it off and was originally intended to go with the Ricoh XR series (looks as if it is from that era!)
OK I jest.
John K