Originally posted by newarts There's an important playoff between ISO, f-stop, and display format underlying all the above comments.
As display size goes down, ISO and/or f-stop can go up for an acceptable quality display. It appears that the K-X camera's high ISO performance is something like twice as good as earlier similar cameras.
Thanks for that nicely put input,
as well as your kind comments.
Yes, with the K-x high ISO performance I can "get away" with the humble kit lenses (which actually are of very good optical quality).
Also remember to take into account the effective SR of Pentax dSLRs - so with relatively stationary subjects one can also allow for slower shutter speeds.
I am currently still on Firmware version 1.01.05 (ie: the interim version before the
rumored silent upgrade 1.01.07 - that's
speculated of addressing some SR issues - note my caveats in
italics). I have found for my shooting and conditions I can gain between 2.5 to 3.5 stops(!) depending on whether I support my arms or not (respectively) -
I know dpReview seemed to have found only about a marginal 1 stop gain -
but these are my own ad-hoc tests - and as always YMMV.
So for me the K-x really does allow me to shoot at much lower light levels with the kit lenses that most people would probably laugh at (me
)
But as one can see from my sample photos eg: in Post #
8 of
Kx in Use - I get quite acceptable shots at as low as 1/4 sec quite consistently -
of course subject motion may become a problem - but then again sometimes it's the motion that makes the picture:
K-x - ISO3200, 1/13, f/4, 18-55
kit Zoom