Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
09-26-2013, 12:51 AM   #1
Senior Member
richardstringer's Avatar

Join Date: Aug 2013
Location: Boston, Lincolnshire
Posts: 145
Marumi circular polarising filter trouble

Does anyone have a Marumi circular polarising filter? I've got one and supposedly the little arrow is to be turned in the direction of the sun, but when I do, I get nice polarisation in the middle portion of the sky but at the sides it fades oout to being normal. My old Hoy was better, I never this problem. Does anyone know what's going wrong?

09-26-2013, 02:08 AM   #2
Senior Member
vanyagor's Avatar

Join Date: Nov 2011
Location: Boston, MA
Photos: Gallery
Posts: 177
My guess is you were using the filter on a wide lens. then it is an unavoidable effect
09-26-2013, 02:51 AM   #3
Senior Member
richardstringer's Avatar

Join Date: Aug 2013
Location: Boston, Lincolnshire
Posts: 145
Original Poster
Yeah I had the focal length set to 18mm, what kind of focal length should I use to get the best effect? By the way, here's some test photos I took, some with the little arrow on the filter on top and some with it pointing towards the sun. I really don't like the effect of the polarisier when used properly, it has a kind of desaturating smoky colour effect.

1. Sun - 90 Degrees, Arrow - Top

2. Sun - 90 Degrees, Arrow - Facing Sun

3. Sun - Behind, Arrow - Top

4. Sun Behind, Arrow - Facing Sun

5. Sun - 70 Degrees, Arrow - Top

6. Sun - 70 Degrees, Arrow - Facing Sun

As you can see, the filter when used at a 90 degree angle how the filter is supposed to be used gives maximum effect but has a smoky colour and kind of desaturating effect, I much prefer my old Hoya, it DID saturate colours more and didn't have a colour effect. What do you guys think?
09-26-2013, 05:04 AM   #4
bdery's Avatar

Join Date: Mar 2008
Location: Quebec city, Canada
Photos: Gallery
Posts: 8,651
There is no perfect focal length for using a polarizer, but the wider the FL, the more you will see a gradient on the sky. In general, my personal experience suggests that I am not comfortable using a polarizer wider than about 30mm. The reason is based on physics : the angle between the Sun and the particles diffracting the light towards you changes a lot in your frame, leading to different effects across the field.

09-26-2013, 05:24 AM   #5
Senior Member
richardstringer's Avatar

Join Date: Aug 2013
Location: Boston, Lincolnshire
Posts: 145
Original Poster
No I meant what's the minimum focal length you'd use when using a polariser, but ok 30mm, thanks.
09-26-2013, 07:34 AM   #6
Veteran Member
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 11,183
The sky does not have uniform polarization, so if you get a lot of the sky in the frame, there is a bigger chance that some parts will be darker than others. That is why the wider the lens, the bigger the chances of that happening. Sometimes, you can use a very wide lens and have no problem at all, other times it will be very noticeable even with 24mm. You kind of have to do it based on the light situation in front of you.
But a polarizer is a great tool to improve landscape and nature photos you get out of your kit lens, because it lowers the contrast on the sky or reflections from plants and water. And usually it doesnt bother viewers if a part of the sky is a little darker. Not to mention, if you shoot raw, you can make it less noticeable in post production
Also, even without a polarizer, with a wide angle lens, the sky will be much brighter near the sun, so the sky is almost never perfectly uniform.
10-01-2013, 05:16 PM   #7
Loyal Site Supporter
Loyal Site Supporter
Wingincamera's Avatar

Join Date: Oct 2012
Location: Pine Haven, Wyoming
Photos: Gallery | Albums
Posts: 1,071
I have the Marumi circular polarising filter and use it with my 35, 50 and 70 primes, which are 49mm thread. I really like the filter, no problems like you describe. I do have the 18-135 lens which I use a 62mm Hoya polariser, but I don't think I ever used it in the 18-30 range. I plane on replacing the Hoya with another Marumi.

I also purchased a Marumi neutral density filter which appears to slightly reduce sharpness. I noticed on their web site that they have all new neutral density filters under a different name. I might try another one.

10-04-2013, 03:26 AM   #8
Senior Member
richardstringer's Avatar

Join Date: Aug 2013
Location: Boston, Lincolnshire
Posts: 145
Original Poster
I've got the Marumi on ebay and have bought myself a Hoya instead and the Hoya is way better.

  • 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!
filter, marumi, tripod
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Marumi DHG circular polarisa help richardstringer Pentax Camera and Field Accessories 4 09-05-2013 04:32 PM
For Sale - Sold: marumi digital high grade circular polarizers obxeye Sold Items 3 07-30-2012 03:48 AM
For Sale - Sold: Marumi DHG circular polarizer 77mm ixian Sold Items 2 03-12-2012 09:29 AM
Wanted - Acquired: 49mm linear (not circular) polarising filter stillshunter Sold Items 0 08-19-2011 04:00 AM
Polarising Filter timk Pentax SLR Lens Discussion 15 08-15-2009 05:18 PM

All times are GMT -7. The time now is 06:24 AM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]