[wombat2go]

in order to be compared directly

Here are some comparisons between istds and k-01 ( posted before on PF)
tiffs from the raws:
low light istds
https://app.box.com/s/6ktbkxc3vtulmgml8lko
low light k-01
https://app.box.com/s/bu2o79shzlvv3270w8nu

raws:
color chart istds
https://app.box.com/s/gf2n7egak8pi3nctzx9j
color chart k-01
https://app.box.com/s/2hss2t2bnc5hw8reps8f

[pathdoc]

What a difference! What in-camera settings (ISO, aperture, shutter) were used?

[wombat2go]

What a difference! What in-camera settings (ISO, aperture, shutter) were used?

Well I was hard pressed to find much difference in the outdoor low iso ones. ( except I missed focus a bit on the K-01)

The exifs should be in the raws. The raw files are open to download if you want to read the exifs

The raws for the low light ones:
istds
https://app.box.com/s/yf25h395klzqmieszoip
K-01
https://app.box.com/s/cuxkm1c95wf7z0e26472

[audiobomber]

Except at Base ISO.

How so? DXO shows better DR, SNR and colour response for current CMOS sensors. Of course resolution has eclipsed the 6mp and 10mp bodies. What other parameter could there be to judge sensor performance?

My tests prove to me that the preference for CCD among some Pentax shooters is simply due to the overly warm white balance of the 6 and 10mp sensors, vs. the overly cool white balance of sensors newer than the K-7, i.e. K-x, K-r, K-5 family, K-3 family). Here are my test results, ISO 200 (base ISO for the K100DS), same settings, 6mp jpegs:

K-3 OOC, jpeg


K100D Super OOC jpeg


K-3 with adjusted white balance

[stevebrot]

The CCD bodies are starting to show their age.

Absolutely! I sold mine because it had spider veins and liver spots.


Steve

[stevebrot]

How so? DXO shows better DR, SNR and colour response for current CMOS sensors.

Remember that DXO applies fudge factors based on resolution.


Steve

[Rupert]

I truly loved my old K10D, it was so wonderful at low ISO. However, my K5IIs outshines it by miles once past ISO 400....and it gets the colors right much better too. Still, that K10D could shine at low ISO!

I could never hope to get this at ISO 3200@500mm with my old K10d, and get color this right.


....and ISO 6400 would have been out of the question!


Regards!

[wombat2go]

DX

shows better DR, SNR and colour response for current CMOS sensors.

I discussed by pm with another PF member about a company that provides graphical comparisons between dslrs.
The company had originally published a correct method for scaling the graphs, but in their reviews later made statements indicating there might be errors in the way some graphs are scaled. So buyer beware!

My tests prove to me that the preference for CCD among some Pentax shooters is simply due to the overly warm white balance of the 6 and 10mp sensors, vs. the overly cool white balance of sensors newer than the K-7, i.e. K-x, K-r, K-5 family, K-3 family).

I found similar.
With Pentax -M lenses, the K-01 seems to infer the color temp for the jpg about 150 K lower than the ist ds. I think the ist ds is more accurate on those old lenses. I don't have any modern DA lenses to do a similar check.

When comparing raws in UFraw and setting the same color temp for both cameras, the colors are quite similar (for example my color chart comparison above)

[audiobomber]

Remember that DXO applies fudge factors based on resolution.

And so they should, because that is real life use; i.e. viewing at the resolution of your computer screen, or printing to a set size.

---------- Post added 2015-08-18 at 15:44 ----------

When comparing raws in UFraw and setting the same color temp for both cameras, the colors are quite similar (for example my color chart comparison above)

I agree.

[Digitalis]

How long will it be before the turning on of the camera is accompanied by the whirring of the world's smallest cooling fan?

some older MF backs, and some current ones have cooling fans.

[pathdoc]

Interesting. I didn't know that.

[Scorpio71GR]

I upgraded from the K10D to a K3 last year. I admit since I got my K3 the K10D has sat. I still have no intention of selling it. The body and battery grip are still almost mint. I would almost have to give it away to sell it. Some people simply prefer the colors of the CCD sensor, but I believe this is more preference. I have many wonderful photos with that K10D, but as others stated over 400 ISO, you are doomed. I still have some really nice older Takumars and I use those on my K10D. I don't like the way the Takumars render on the K3. Maybe the sensor is just too much, I am not sure. I grew up shooting those old Taks on a K1000 so sometimes I enjoy still using them. When I do use them it is on the K10D.

For me this is what I really enjoy about Pentax. Using 40 plus year old lenses on a modern DSLR. This is purely a personal preference. I think many people still like the CCD sensor simply because they like the way it renders colors. It has nothing to do with fancy graphs or charts, they simply just like it.

Michael

[pathdoc]

The Takumars in their original application probably never saw consumer grade colour film above 400 ASA anyway. Black and white is another matter

[peterjcb]

I will never sell my K200D. It's not worth the money I'd get for it and I'd rather keep it.
Years from now CCD will have a niche following just like film has today....

[john5100]

I love and still use my K200D. I use my K3 for more serious stuff but I have no problem using the K200D in a professional setting like in the last photo. BTW, photo 3 is at ISO 800.


Veteran's Day Photo Walk LeMay Museum by John Rudolph, on Flickr


Sunday Photowalk LeMay Museum by John Rudolph, on Flickr


Seattle Business Magazine by John Rudolph, on Flickr

---------- Post added 08-21-15 at 01:54 PM ----------

ISO 1600 for any questions about high ISO

St. James Catheral by John Rudolph, on Flickr