Search results for 'sensor cleaning' - page 291
645D lost the competition
The K10D use a whopping 22-bit A/D converter for example so it must be good :mrgreen: And the 16 vs 14 bit argument is about the A/D converter (as I understand) - so since 14 bits is already more than you get out of the sensor, 16 bit is basically just digitising the noise in a bit more detail? Nea...
Posted by MostlyHarmless on 10/03/2010 - 13:53
645D lost the competition
the sensor is analogue, it produces a voltage signal which is measured by the A/D converter. The sensor itself doesn't have a "native" bit level. The other question which as far as I know is yet to be answered is how many bits do you actually get in the RAW files. As Stefan reminded us above, t...
Posted by Mongoose on 10/03/2010 - 14:14
645D lost the competition
the sensor is analogue, it produces a voltage signal which is measured by the A/D converter. The sensor itself doesn't have a "native" bit level. Sorry, I wasn't clear. As I understand it, attempting to digitise the sensor output with 'too many' bits doesn't get you any more 'real' image data, jus...
Posted by MostlyHarmless on 10/03/2010 - 15:17
645D lost the competition
the sensor is analogue, it produces a voltage signal which is measured by the A/D converter. The sensor itself doesn't have a "native" bit level. Sorry, I wasn't clear. As I understand it, attempting to digitise the sensor output with 'too many' bits doesn't get you any more 'real' image data, jus...
Posted by Mongoose on 10/03/2010 - 18:29
645D lost the competition
As i recall,It is about 2 or 3 years since Kodak announced the development of these new Sensors. Kodak developed the Bayer pattern over 30 years ago which is used in the majority of current Sensors, They designed this new generation of sensor from the ground up. The Photosites are claimed to be 50%...
Posted by PeteL on 10/03/2010 - 20:58
645D lost the competition
As an ex Oly E-1 owner, I can also add that many Olympus owners think the original 4/3 cameras with Kodak sensors produced the nicest colours of any of the 4/3 bodies. Noise, sadly, was a different issue with the E-1. If Kodak have managed to work similar magic with this sensor, I'm wondering if i...
Posted by JonSchick on 10/03/2010 - 21:39
645D lost the competition
[quote:3496ace15f="Mongoose"]the sensor is analogue, it produces a voltage signal which is measured by the A/D converter. The sensor itself doesn't have a "native" bit level. Sorry, I wasn't clear. ... Neal ... According to the spec sheet for the Kodak sensor which matches the specs of the 645D ...
Posted by MostlyHarmless on 11/03/2010 - 00:19
645D lost the competition
ahh I see what you're saying, good point. 42000/26 = ~1600 read noise size steps, which would make 12bit (4096 levels) more than enough. It seems to me that it's still worthwhile to oversample somewhat beyond the size of the noise, after all when you're plotting a graph you don't quantise to t...
Posted by Mongoose on 11/03/2010 - 08:12
645D lost the competition
ahh I see what you're saying, good point. 42000/26 = ~1600 read noise size steps, which would make 12bit (4096 levels) more than enough. It seems to me that it's still worthwhile to oversample somewhat beyond the size of the noise, after all when you're plotting a graph you don't quantise to t...
Posted by robbie_d on 11/03/2010 - 16:30
pentax k7
Well what with the red tape door latch, the scratched sensor and the fact I noticed yesterday its not recognising my external flash correctly now I think it's time has probably come. I will replace it but not until I need a new camera for something special .. in the meantime I can just watch the ...
Posted by Mike-P on 14/03/2010 - 10:46
pentax k7
I upgraded from a K200D to the K7, so here are my thoughts: Size wise the two are almost identical, unless you are comparing them "gripped" as the K7 grip is a lot bigger than the K200D one (should also note that the K7 grip is a lot more useful as far as buttons etc). The biggest initial differe...
Posted by Goliath_UK on 14/03/2010 - 11:07
645D Review
Therefore we plan to release soon a new wide high-end lens that will complement our existing wide lineup and be able to fully realize the image quality potential of the sensor for wide applications. It is also going to restore some of the wide capability that we have lost because of the smaller size...
Posted by Mongoose on 18/03/2010 - 17:03
645D Review
Here is a review on Luminous Landscape: Makes for easier reading than Stefan's Google translation.:wink: Yeah but no comparison and a real review but an interview :wink: Therefore we plan to release soon a new wide high-end lens that will complement our existing wide lineup and be able to fu...
Posted by Anvh on 18/03/2010 - 19:37
K-7 shims
Apparently, this has been discussed here before, but I thought I would post my experiences with my K-7 with regards the focus shims and Katz Eye screen. I never knew there were focus shims used for calibrating the focus screens of the Pentax DSLR's. I did know there was a shim for the DS(?), but I t...
Posted by Lance B on 19/03/2010 - 00:26
K-7 shims
G'Day Lance! That's quite a saga. It appears from your description that it is AF that is in issue here, not focus per se were one to do that manually? Also (knowing you had a K10 and K20), did you discover shims in those bodies as well? It's certainly interesting (and I'll be checking mine la...
Posted by MostlyHarmless on 19/03/2010 - 08:48
K-7 shims
G'Day Lance! That's quite a saga. It appears from your description that it is AF that is in issue here, not focus per se were one to do that manually? Also (knowing you had a K10 and K20), did you discover shims in those bodies as well? It has nothing to do with AF. The A50mm f1.2 is a manual...
Posted by RichardDay on 19/03/2010 - 10:21
K-7 shims
G'Day Lance! That's quite a saga. It appears from your description that it is AF that is in issue here, not focus per se were one to do that manually? Also (knowing you had a K10 and K20), did you discover shims in those bodies as well? It's certainly interesting (and I'll be checking mine la...
Posted by Anvh on 19/03/2010 - 15:18
K-7 shims
G'Day Lance! That's quite a saga. It appears from your description that it is AF that is in issue here, not focus per se were one to do that manually? Also (knowing you had a K10 and K20), did you discover shims in those bodies as well? It has nothing to do with AF. The A50mm f1.2 is a manual...
Posted by Lance B on 20/03/2010 - 05:41
Lens correction feature on K7
Thanks for the info. I do have one annoyance with the K7, and that is that so many features only work with jpeg files....seems like this is another one. Also, I didn't get any software with my camera, so I guess I will go and ask the shop I bought it from for a copy. That's because you only need the...
Posted by Anvh on 20/03/2010 - 14:19
Pentax K-7 Flash Problems
in manual the iso is only selectable, and taking pics of my kids indoors i need fast shutters speeds hench flash with 180/sec speeds and if i drop the apature more in those modes it will over expose more, just seems abit flawed, my k20d i never had this problem, In what mode, flash and camera??? If...
Posted by Anvh on 20/03/2010 - 20:30
