K5 users, what ISO?

bretti_kivi
Posted 31/08/2011 - 19:48 Link
My TAv is limited to 3200, much after that I find the noise gets *almost* intrusive. About the same as a K10 at 400

Bret
my pics: link
my kit: K3, K5, K-01, DA 18-55, D-FA50 macro, Siggy 30/1.4, 100-300/f4, 70-200/2.8, Samsung 12-24/f4, Tamron 17-50, and lots of other bits.
Anvh
Posted 31/08/2011 - 19:50 Link
I simply looked at DXO mark for the numbers and i do see it back when processing the photos between ISO80 and ISO400.
I know there are difference with lower settings as well but the differences is just too small to spot with normal use.

I haven't really had it above ISO3200.
I did try 12600 just to test it, as long as you expose to the right and bring back the exposure a bit in post processing the amount of noise would then be quite low and you should still have some detail.
Just don't underexpose or else the noise will be too much.
I also found this true with the K10D and his highest ISO, you still could get very decent photos that way.
Stefan
Comment Image

K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
simonkit
Posted 31/08/2011 - 20:43 Link
For landscapes then ISO80 whenever practical, one of the reasons I bought the K5 was for its wide dynamic range and as far as I'm aware ISO 80 makes best use of it.

For high Iso I've just been away on my holidays where I shot lots of interior shots at ISO6400 and the results are excellent so I now have auto ISO limits set to ISO 6400, amazing how low the light can be and the K5 still gets great shots

Here's one example:

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malvern_man
Posted 31/08/2011 - 21:48 Link
K5 @ ISO 12800.

Under floodlights and through safety fencing.

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Edited by malvern_man: 31/08/2011 - 21:56
davex
Posted 31/08/2011 - 21:52 Link
Thanks folks,
That`s all really useful.
Am calling srs in the morning
Davex.
K5 + 8mm-500mm zooms and primes
Please feel free to play with any images I post.
My flickr: link
cabstar
Posted 31/08/2011 - 22:41 Link
One thin gI don't hear mentioned is if you are using lightroom you can adjust the exposure on the k20d by 2 stops each way, on the k-5 you can do it by 4 stops each way....
PPG Wedding photography Flickr
Concert photography

Currently on a Pentax hiatus until an FF Pentax is released
Smeggypants
Posted 01/09/2011 - 00:32 Link
davex wrote:
Quote:
In very bright conditions I'll take advantage of ISO 80
Is there a noticable difference in IQ between ISO 80 and say 400 on the K5?
As Stefan says it's in the dynamic range. bringing out the shadows in a high contrast scene where you've exposed to not blow the highlights is a delight at ISO80 on the K-5
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
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

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