Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-22-2014, 12:42 PM   #1
Veteran Member




Join Date: Jun 2009
Location: on the wall
Photos: Gallery
Posts: 715
SMC DA15 exposure questions?

Hi,
I was the lucky recipient of a new DA15 lens this Xmas. The lens works fine sometimes and then other times the images are severely underexposed.

I'm not sure if I'm doing something wrong of if it's my lens or my camera settings. I find that I have to set the exposure level to +2 to compensate. I can shoot in M mode but how does that help me when a stranger wants to try my camera?

01-22-2014, 12:47 PM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,978
QuoteOriginally posted by dragonfly Quote
Hi,
I was the lucky recipient of a new DA15 lens this Xmas. The lens works fine sometimes and then other times the images are severely underexposed.

I'm not sure if I'm doing something wrong of if it's my lens or my camera settings. I find that I have to set the exposure level to +2 to compensate. I can shoot in M mode but how does that help me when a stranger wants to try my camera?
Are you in matrix metering mode?

Since the 15mm is a very wide lens, the metering system is a bit easier to fool.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

01-22-2014, 01:49 PM   #3
Veteran Member




Join Date: Jun 2009
Location: on the wall
Photos: Gallery
Posts: 715
Original Poster
QuoteOriginally posted by Adam Quote
Are you in matrix metering mode?

Since the 15mm is a very wide lens, the metering system is a bit easier to fool.
Thank you, I checked my metering mode and cycled thru the three different options. Changing them didn't seem to do too much to the exposure levels I'm getting.


For example, here is a photo of my ceiling fan shot in A mode.


It's clearly underexposed.

Last edited by dragonfly; 01-22-2014 at 02:04 PM.
01-22-2014, 05:54 PM   #4
Veteran Member
NitroDC's Avatar

Join Date: Jun 2009
Posts: 342
Exposure compensation turned off?

01-22-2014, 06:53 PM   #5
Site Supporter




Join Date: May 2012
Posts: 2,478
QuoteOriginally posted by dragonfly Quote
Thank you, I checked my metering mode and cycled thru the three different options. Changing them didn't seem to do too much to the exposure levels I'm getting.


For example, here is a photo of my ceiling fan shot in A mode.


It's clearly underexposed.
I don't think you understand what he was saying, although I could be mistaken. Your camera has different methods to meter the light it sees. Say for example I only use 'spot metering' which means it has one single red spot in the view finder and the camera will look only at that spot to tell you if the shot is going to exposed properly or not.

I don't know what body you have but on my K-5 the "Av" mode is Aperture Priority which is entirely different than metering.
01-22-2014, 07:21 PM   #6
Pentaxian
reeftool's Avatar

Join Date: Dec 2007
Location: Upstate New York
Photos: Gallery | Albums
Posts: 8,010
It would be helpful to have some exif data of that shot to see what happened. I have had a screwy shot from time to time where it appeared the camera didn't meter anywhere close to right. It's rare so I have never been concerned enough to try and find out why it happened. The shot before and after would be fine and no settings were changed on the camera, just a totally wrong exposure. I can't say if it was any lens in particular when it happens. As I said, it's been very rare and I really don't notice it until I have uploaded my card. I did have issues with my DA40 that turned out to be sticky aperture blades. In cold weather especially, the aperture wouldn't close fast enough and I ended up with overexposed shots. I suppose the same thing could happen causing it to underexpose if you are shooting a burst or rapidly shooting single shots and the aperture is sticking closed. In the case of my DA40, it was obvious when I moved the aperture lever with the lens off. It took a couple of seconds to move back. I sent it off toe Eric for a cleaning and has been perfect since.
01-22-2014, 08:52 PM   #7
Site Supporter
SpecialK's Avatar

Join Date: Dec 2006
Location: So California
Photos: Gallery
Posts: 14,438
QuoteOriginally posted by alamo5000 Quote
I don't think you understand what he was saying, although I could be mistaken.
I don't think his 2 sentences were related. Then it makes sense :-)

Some exif data would help, though.
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!
camera, da15, exposure, k-mount, lens, pentax lens, slr lens, smc da15 exposure
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Questions about a SMC Pentax FA 250-600mm f5.6 ED[IF] lens Weevil Pentax SLR Lens Discussion 19 11-20-2015 05:28 AM
Fresh owner, few questions (K30, Firmware, Exposure modes) Ploki Pentax K-30 & K-50 15 01-03-2014 04:50 AM
Questions re: WB and exposure Stardog Troubleshooting and Beginner Help 3 03-28-2011 06:29 PM
Exposure Questions: 30mm F1.4 & 50mm F1.7 twokatmew Troubleshooting and Beginner Help 11 02-07-2010 02:33 PM
DA15 vs SMC Pentax 15? mabelsound Pentax SLR Lens Discussion 11 04-25-2009 02:03 PM



All times are GMT -7. The time now is 03:35 AM. | See also: NikonForums.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