Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-06-2011, 01:35 PM   #1
Forum Member
freddykrueger's Avatar

Join Date: Jan 2011
Location: Czech Republic
Photos: Gallery
Posts: 80
Flash with polarizing filter

I've never actually bothered about this, but I bought a hoya polarizing filter (CPL). Now when I shoot with flash indoors, the photos look really weird. They look too artificial, dark to me and are overall weird compared to photos with no filter. I tried adjusting exposure, but the image wasn't any lighter. I also tried rotating the filter, but it didn't change anything. So I want to ask: Is there any way to get the same pictures indoors with the polarizing filter as without it? It is really annoying to always remove the filter. (I use the built-in flash)

03-06-2011, 01:50 PM   #2
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,679
The CPL typically reduces incident light intensity by 1-1.5 stops, even if rotated to remove the polarising effect. If you're shooting with flash in P-TTL mode this shouldn't matter. However, if you're in a manual mode of sorts, then clearly there will be underexposure from what you expect.

Using the popup flash is also thwart with limitations - I'm also doubting that the flash is powerful enough to get the exposure you're after with the filter on. I'd suggest investing in an external flash unit, or remove the filter if you want flash-exposed images.
03-06-2011, 01:54 PM   #3
Veteran Member
kkoether's Avatar

Join Date: Jul 2008
Location: Huber Heights, OH, USA
Photos: Gallery | Albums
Posts: 572
A polarizing filter is meant more for outdoor use in bright sun light. It's used to reduce glare off of water and other reflective surfaces. I suspect the reason it's ruining your indoor flash shots is it's messing with the White Balance by changing the wavelength of the light passing thru the lens.
03-06-2011, 02:00 PM   #4
Veteran Member
Eruditass's Avatar

Join Date: Jul 2009
Location: Pittsburgh, PA
Photos: Gallery | Albums
Posts: 2,206
Many people claim polarizers make skin look unnatural, even outdoors, due to the reflections it reduces. I did want to try one to see if it could reduce shiny skin, though.

03-06-2011, 02:24 PM   #5
Forum Member
freddykrueger's Avatar

Join Date: Jan 2011
Location: Czech Republic
Photos: Gallery
Posts: 80
Original Poster
Thanks for the replies, guys. I found out that if I change the power of the flash to +1 I get almost identical pictures compared to without polarizer. But it'll be probably usefull only in smaller areas. I guess I'll invest in an external flash in the future.
Eruditass: I think it makes portraits a bit better if you have a slow lens and use flash, but yes the skin looks a bit unnatural. And it definitelly reduces any reflections.
03-06-2011, 03:26 PM   #6
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,679
Then it's likely you've reached the limits of your popup flash. Either boost ISO or increase aperture (smaller f/ number) and you may get better exposures.
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, filter, flash, indoors, pentax help, photography, photos
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Polarizing Filter- using one ? lesmore49 Pentax SLR Lens Discussion 4 12-17-2010 12:21 PM
polarizing filter regbaron Troubleshooting and Beginner Help 3 01-04-2010 01:15 PM
what polarizing filter to use? obxeye Troubleshooting and Beginner Help 5 10-12-2009 04:53 PM
Polarizing filter question ukbluetooth Pentax SLR Lens Discussion 1 05-28-2009 09:58 AM
Polarizing Filter. lgross1949 Pentax SLR Lens Discussion 2 08-23-2008 01:08 PM



All times are GMT -7. The time now is 08:53 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