Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-23-2008, 03:25 PM   #1
Forum Member




Join Date: Jun 2008
Location: Maribor, Slovenia
Posts: 74
Hello, a question regarding RAW vs. JPEG

Hello there!

I've gotten a few pictures back from a lab and they're very different to what I see on the screen. I can only assume it's because my cheap monitor isn't calibrated... I don't really have the money to buy a calibrator, neither do I know anyone with one.

My question is, whether it would be better to shoot JPEG and trust the camera with the colours, contrast and everything else settings, rather than shooting PEF and adjusting the settings incorrectly due to an uncalibrated monitor?

Do I have any other options?

(Of course if there -really- is no other way, I will manage to get a calibrator — somehow. Um, which ones would you prefer?)

Thanks in advance!

Nanthiel

12-23-2008, 03:36 PM   #2
Veteran Member
attack11's Avatar

Join Date: Apr 2007
Location: Ottawa, ON - Canada
Photos: Gallery
Posts: 658
shoot raw, turn the red saturation down a bit (-10 if it's adobe camera raw) and you're set. buy a calibration tool when you can; it'll help drastically regardless of how cheap your monitor is.

a spyder2express is generally the best low end tool because it's just a limited software bundle.
12-23-2008, 03:48 PM   #3
Forum Member




Join Date: Jun 2008
Location: Maribor, Slovenia
Posts: 74
Original Poster
Isn't raw processing though totally dependent of how the raw processor interprets the image? So different raw processors output different images... how do I know what to use for mine? (Raw Therapee)

Also, my problem is more the contrast/brightness/black level/gamma (whichever of these my problem is? — the printed images are far darker) than colours... after I can actually see anything, I'll focus on the colours... =/
12-23-2008, 03:52 PM   #4
Veteran Member
attack11's Avatar

Join Date: Apr 2007
Location: Ottawa, ON - Canada
Photos: Gallery
Posts: 658
raws contain the camera's default processing settings; so if you just turn down the red saturation and leave the rest untouched you're gonna get a jpg without the usual high red saturation of a ccd.

the amount to adjust the saturation depends on the converter, and i only use acr.

if the images are coming out dark that means your monitor is too bright. try putting it back to default and make a judgement call if it's too red or green; turn that channel down a little and get a calibration tool. they work by setting the monitor to defaults (zero) and reading the differences of what the various test shades should be, and what it's getting from the screen. the profile won't do magic on a cheap tn panel (6bit, poor viewing angles, etc) .. but you won't believe the difference.

you can't get accurate prints if you can't make accurate digital proofs on screen.

12-23-2008, 04:04 PM   #5
Forum Member




Join Date: Jun 2008
Location: Maribor, Slovenia
Posts: 74
Original Poster
By the way, I'm using a K20. You mentioned a 'CCD', I guess that's a sensor type? I think the K20 has a CMOS, so do I still need to reduce the reds?

My LCD doesn't seem to have any sort of tinting, but that could be just my eyes.. a grey looks grey and not greenish or blueish. Also, setting anything on the LCD's settings doesn't change the brightness enough... when I messed with the Gamma settings, that seemed to help (also, if I follow online gamma charts and adjust the gamma accordingly, the screen gets a lot darker, so I guess it should be like that?)
12-23-2008, 04:08 PM   #6
Veteran Member
attack11's Avatar

Join Date: Apr 2007
Location: Ottawa, ON - Canada
Photos: Gallery
Posts: 658
having a cmos helps, you don't have to defaultly correct any saturation.

every lcd has a tint. tn are usually too red, mva/ips are usually a little too green. it's really impossible to explain in text that someone's monitor isn't giving them accurate color 'cause you have nothing to reference; nothing's shown you proper color yet.
12-23-2008, 04:29 PM   #7
Forum Member




Join Date: Jun 2008
Location: Maribor, Slovenia
Posts: 74
Original Poster
Yeah, I guess so. In fact the prints are a bit too red, to be honest... but I'd need a reference sheet of colours or something to compare the screen to... and ambient light would probably be a huge factor, and a problem, there... I guess a calibrator is the only true viable choice.

12-24-2008, 11:01 AM   #8
Veteran Member
emalvick's Avatar

Join Date: Feb 2008
Location: Davis, CA
Photos: Gallery
Posts: 1,642
If you can't get a calibrator just yet, why don't you adjust your monitor to match the prints you have?

I used to do this in the past because I wasn't aware of calibrators and I wanted to be sure what I was seeing was what I was going to get back from a printer. Thus I figured if I printed an image and then adjusted the monitor so the image on the monitor roughly matched the printed image, then I would be happy with the results, and I was (there are always exceptions or challenging shots that will give problems).

This is obviously not an exact way to do it, but it gets you much closer than no calibration at all.
12-24-2008, 03:48 PM   #9
Forum Member




Join Date: Jun 2008
Location: Maribor, Slovenia
Posts: 74
Original Poster
I did that to an extent by setting my gamma setting to 0.7 (for all colours) instead of the default 1.0. Everything gets more contrasty, of course... but the on-screen picture is closer to the prints. It's even a little bit more closer if I set it to 0.6... but following online gamma charts, the best setting kind of always hits 0.7, so I decided to use that.
The colours are still not exactly like on the print, but the images generally are a lot closer.
12-24-2008, 03:51 PM   #10
Veteran Member
maxwell1295's Avatar

Join Date: Jan 2008
Location: Long Island, New York
Photos: Gallery
Posts: 2,703
QuoteOriginally posted by emalvick Quote
If you can't get a calibrator just yet, why don't you adjust your monitor to match the prints you have?

I used to do this in the past because I wasn't aware of calibrators and I wanted to be sure what I was seeing was what I was going to get back from a printer. Thus I figured if I printed an image and then adjusted the monitor so the image on the monitor roughly matched the printed image, then I would be happy with the results, and I was (there are always exceptions or challenging shots that will give problems).

This is obviously not an exact way to do it, but it gets you much closer than no calibration at all.
That's an interesting way to look at it....makes sense too. I've been lucky with my prints done at Costco looking exactly like my monitor (a relatively cheap Acer widescreen LCD).
12-25-2008, 06:00 AM   #12
Veteran Member
Mike Cash's Avatar

Join Date: Jan 2007
Location: Japan
Photos: Gallery
Posts: 6,950
Monitor Calibration Wizard is free. Even if you don't do color calibration with it, it is very handy for adjusting brightness and contrast on your monitor.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
calibrator, jpeg, photography, photoshop, question, settings

Similar Threads
Thread Thread Starter Forum Replies Last Post
K-x jpeg vs raw high iso question barondla Pentax DSLR Discussion 6 08-12-2010 02:39 PM
[K10D RAW+]Exposure difference between RAW and JPEG sterretje Pentax DSLR Discussion 9 04-13-2010 02:06 AM
JPEG, RAW, JPEG + RAW...huh? Raptorman Troubleshooting and Beginner Help 14 12-22-2009 11:49 AM
RAW + JPEG with JPEG on One Star quality laissezfaire Pentax DSLR Discussion 58 12-10-2008 02:42 PM
jpeg, raw or both LDB Photographic Technique 53 05-05-2008 08:58 PM



All times are GMT -7. The time now is 03:40 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top