Originally posted by Wheatfield I had this email sent to me a few days ago.
It might be enlightening.....
"i simply don't trust the Pentax bodies to deliver reliable exposure, WB, and noise control as any of my Nikon bodies. the K20D's noise is not that good and unless shot with very careful exposure, more than any of my current Nikon bodies under ordinary circumstances. long exposures like i am fond of doing with waterfalls and HDR sequences induce sensor heat buildup noise that i have never seen in any other DSLR i have owned, including the K10D. this noise is a huge hassle to deal with and when it occurs, i end up throwing away lots of images. inconsistent exposure, mostly under, just kills noise performance because when the camera is under, it's under by a lot, 2/3 of a stop to as much as 1.5 stops. with a camera that is as noisy as the K10D or K20D, correct exposure is super important. Pentax may use a contrasty tone curve to hide the noise in JPG mode but i shoot RAW and process with a linear tone curve specifically to dig out lots of shadow detail. it's part of my look and i don't like to deal with cameras that don't have the dynamic range i need. the usual numeric noise figures for the K20D are misleading because they aren't sensitive to low spatial frequency chroma noise that the camera produces.
messed up AWB is an inconvenience as i shoot only RAW, but it's annoying to do the extra step of overriding WB on just about every shot in tricky lighting. i'm not talking about tricky white balance, just unusual patterns of light and dark in daylight. tricky color balance problems seem to be beyond the camera's ability to recognize.
shooting essentially 7 days a week with my D3 has made me very unsatisified with the speed and noise of the K10D and K20D. i'm talking general handling speed as well as my more specific complaints about AF speed and FPS. i haven't yet bought any DA* lenses with SDM, and i will eventually. that will address lens AF noise, but not its speed. it's hard to describe to someone who has never used one what it's like to get used to a 9FPS camera's responsiveness. most of my shooting, although not much of my selects yet, are done with my D3 set to its highest FPS and high shutter speeds. simple things like quick review and so on follow from the D3 generally being a speedy camera. even on a tripod with long exposures, the D3 just lets me work faster.
i get what i feel are better results from the K20D only under relatively limited circumstances because of the body's shortcomings. these shortcomings degrade the lens advantage over Nikkor lenses to the point where i just don't feel like using the body more than i have to. i find myself prefering to use the K10D more to avoid the sensor heating problem. for the moment, i am solving my dissatisfaction with Nikkor short tele to wide prime problem by buying Zeiss lenses. i consider high end Nikkor zooms better than Pentax ones in most areas except flare and am happy with them otherwise. the one area where i have to do some experiments on are my B&W people photography. the K20D chroma noise basically disappears, but i am not sure of the general sensor heating problem. the K10D was excellent for this when i shot with the 43 and 77. i want to use the K20D with the same lenses but i am not sure i will get the results i want. when i get back from vacation, i will try a couple of sessions with the K20D to see how things work out. i may go back to the K10D from which i have had excellent results.
i just feel so disappointed and occasionally angry at Pentax for just not getting it when they had a chance to lead and now i don't see much chance of them ever doing more than eternally playing catch-up, even with Samsung in there. i just shouldn't have so much hassle to get consistent high quality results from the bodies. VPN on the K10D is a near-fatal problem for me. the K20D reduced VPN but not to the point where i am happy. however, the K20D adds noise overall by using cheap ADCs and then not providing adequate cooling for the sensor so that long exposure aficionados like me have the dark-field NR become essentially useless. inconsistent exposure and AWB just aggravate things. when i use the Pentax bodies, i just spend too much time working around their shortcomings and for many things, it's just not worth it."
I dunno...since Nov. /07 I have been using my K10d, with 16-45, 55-300, battery grip, 360 flash....old 35-105 A Macro...all Pentax.
I take pictures of custom/hot Rod / retro-rebuild cars, landscapes, portraits, fauna..from Pelicans to Sparrows.
The pictures are, IMHO, great....having taken pictures both as a hobby and limited professional use-since 1968.
I've really learned how to use this camera, poring over the manual and two other K10D books, trying out new settings, experimenting and I am extremely pleased.
In my 40 years of photography, owning and using everything from a variety of Pentax 35mm SLR's, Leica rangefinder, Mamiya medium format...etc....I have to say, I'm happier with this camera than others.
I think if I was going to go into photography as a profession (I'm just retired + not from photography) I would not be getting Nikon.
If you're going to use DSLR for your professional work, the system to get, is Canon.
Much more lenses, accessories and the bodies are incomparable, albeit Nikon, very lately is coming up strong. But Nikon can't compete with the huge Canon professional system.
It used to be , say 20-40 years ago that Nikon was the pro Camera, but the last decade + or so....Canon is the overwhelming choice.
For advanced amateurs and photogs who do a bit of pro work...Pentax will fill the bill.
I have not noticed people going to Nikon from Pentax. I would say this was the case before the K100/K10D came out, but not so, anymore. I think Pentax holds it's own, now.
If anything there has been a swing from Nikon to Canon, by those who want access into the Canon system.