Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-24-2008, 01:43 PM   #16
New Member




Join Date: Feb 2008
Location: Finland
Photos: Gallery
Posts: 14
Original Poster
If that's the case, is there an easy workaround? How should I shoot to get a decent properly exposed photo?

02-24-2008, 02:12 PM   #17
Veteran Member
Eaglerapids's Avatar

Join Date: Apr 2007
Location: Idaho,USA
Photos: Gallery
Posts: 1,588
Check your histogram after taking a shot. It will tell you if you're way underexposed.
02-24-2008, 02:29 PM   #18
New Member




Join Date: Feb 2008
Posts: 4
I agree with Gimbal - when it's dark enough, you're on your own.

I've got an impression that when the exposure times go above one second or so, the camera is not able to calculate correct values.

Also, there might be bright spots in the picture (house lights, street lights, moon) which confuse the exposure. You could try turning on spot metering instead of evaluative and pointing the metering point away from light sources.

As you noticed, exposure compensation of +3 might not be enough at night.

I've always gone with trial and error when shooting at dark :-)
02-24-2008, 06:43 PM   #19
Veteran Member
Stratman's Avatar

Join Date: Mar 2007
Location: St Louis, Missouri U S A
Photos: Gallery | Albums
Posts: 2,464
Do you have noise reduction enabled?

02-24-2008, 07:05 PM   #20
Veteran Member




Join Date: Dec 2007
Posts: 923
The K10D can do a pretty decent job in really low-light situations - 10, 20 second exposures in Manual mode. I tried out some shots with moon-light a few weeks ago.

But you are on your own - manual focus, manual exposure without guidance. Beyond 2 secs, I think, the metering can't suggest to you what is the appropriate exposure.
02-25-2008, 01:13 AM   #21
Veteran Member




Join Date: Jan 2008
Location: Seattle, Washington, USA
Photos: Gallery
Posts: 813
Additionally, don't hesitate to crank up the ISO to 800 for long night exposures; I use it with NR enabled and it is worlds better than my old Nikon when it comes to noise and NR softening at that ISO.
02-25-2008, 01:30 AM   #22
Senior Member




Join Date: Oct 2007
Location: Geelong
Photos: Gallery
Posts: 138
After asking related questions here a short time ago I was informed that keeping the ISO low and using longer exposures should give the lowest noise in night exposures.
My latest (Feb) pic by the light of the full moon seems quite noise free to me.
It was exposed for approx ten minutes at ISO 100.
02-25-2008, 05:20 AM   #23
Veteran Member
distudio's Avatar

Join Date: Jul 2007
Location: Sydney
Photos: Albums
Posts: 448
QuoteOriginally posted by kittykat46 Quote
-25 C is far below the recommended operating temperature of the K10D (0 C to 40 C- page 3 of the manual). You have shown that it does operate at such low temperatures, probably won't produce good pictures, though.
The low temperatures limit would likely be set to ensure correct operation of the LCD displays and lubricants, sensor noise performance should improve with reduced ambient temperature.

02-25-2008, 07:12 AM   #24
Veteran Member
Tom M's Avatar

Join Date: Aug 2007
Location: Lincoln Park, NJ
Photos: Gallery
Posts: 782
Any long exposure shot should be taken at ISO100 in my opinion. The K10D does extremely well at multi-minute exposures at ISO100. I have 3 minute long exposures with zero noise.
02-25-2008, 09:34 AM   #25
New Member




Join Date: Feb 2008
Location: Finland
Photos: Gallery
Posts: 14
Original Poster
I ordered a wire switch for long exposures. With it I can use bulb mode and over 30s exposures. The 30s that is the camera maximum is obviously way too short for moonlight shots. Funny that they don't build long exposure timers in these. (I think nobody else does either) Would be very easy to do.
03-03-2008, 12:00 AM   #26
Veteran Member
pixelsaurus's Avatar

Join Date: Jul 2007
Location: Levin, NZ
Photos: Gallery | Albums
Posts: 784
QuoteOriginally posted by Smoothster Quote
Funny that they don't build long exposure timers in these. (I think nobody else does either) Would be very easy to do.
In ancient times,manufacturers use to have a "T" setting as well as "B". First shutter push opened and locked the shutter, 2nd push closed it. No need for those horrible little lock screws on cable releases. Why it was ever removed has baffled me for some 40 years.
03-03-2008, 03:05 AM   #27
Veteran Member




Join Date: Jan 2008
Location: Seattle, Washington, USA
Photos: Gallery
Posts: 813
PW Pix, that 10 minute, ISO 100 shot is remarkable. I'm going to have to pick up a cable release and give that technique a try, as it is noticeably cleaner than my shorter, but higher ISO, exposures. Gad, sensors have come a long way in the past few years!
03-03-2008, 04:01 AM   #28
Senior Member




Join Date: Oct 2007
Location: Geelong
Photos: Gallery
Posts: 138
Yes Christine, I made January's full moonlit landscape at ISO 400 and approx 2 mins exposure, the Feb one at ISO 100 is much cleaner.
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!
albums, aurora, camera, dslr, exposure, janne, noise, photography, picasa, shots, web
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax K10D long exposure noise reduction when shooting RAW? Robert S Donovan Pentax DSLR Discussion 30 08-19-2013 11:42 AM
Long exposure camera noise Alex00 Pentax DSLR Discussion 2 02-27-2010 05:55 AM
long exposure noise? slow2focus Troubleshooting and Beginner Help 9 12-16-2009 09:24 PM
Which is worse for noise? Long Exposure or High ISO boodiespost Troubleshooting and Beginner Help 7 12-10-2009 07:57 AM
K-x long exposure noise? er1kksen Pentax DSLR Discussion 4 11-06-2009 01:17 PM



All times are GMT -7. The time now is 12:14 PM. | 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