Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
05-17-2011, 06:29 PM   #1
Site Supporter
slip's Avatar

Join Date: Oct 2006
Location: 2 hours north of toronto ontario canada
Photos: Gallery | Albums
Posts: 3,532
which ND filter would be of the most use?

I was wanting to get a really good neutral density filter for my k10 but not sure which one (not brand but F- stop reduction)to get.
anyone have some opinions?
I will be using it for longer shutter speeds for waterfalls, etc and off camera flash to blur the background when the f stop is to small.

thanks and cheers

05-17-2011, 06:42 PM   #2
twitch's Avatar

Join Date: Nov 2009
Posts: 4,571
For waterfalls you probably want anything from 4 to 10, for outdoor flash you probably want 2 to 4. I guess then a 4 might be a good compromise? If you have a CPL (usually 2 stops) you could always use it instead or as well as the ND filter. So you could have 2 stops (CPL), 4 stop (ND), 6 stops (ND + CPL).

I have a 6 stop ND and it really is very hard to see anything through the viewfinder except in very bright daylight. I'd imagine then that 6 stop is too dark for flash photography even from a usability point of view.
05-17-2011, 08:30 PM   #3
Veteran Member

Join Date: Jul 2009
Location: Mount Joy, PA
Photos: Gallery | Albums
Posts: 533
I vote for the Hoya Pro 1D 16x

I can say, from personal experience, the Hoya Pro 1D 16x is an excellent neutral density filter that gives you an extra four stops of density.

I found myself in the same situation as you; I wanted an ND that was more than your typical 1 or 2 stop filter, but nothing so dense that it incurred a huge price tag like what you find with the 6, 8, or 9 stop filters. The variable neutral density filters are enticing, but way too expensive.

I like the 16x from Hoya for a couple reasons (beyond the price tag, which I think is very reasonable compared to similar offerings from Heliopan and B+W). Again, it's four stops and it can be combined, if necessary, with a polarizer for more density. As twitch said, this makes it quite flexible. Also, the Hoya Pro 1D filters are always low-profile frames, so wide-angle lenses don't vignette. The Pro 1Ds also have threads on the front, in spite of being low profile, making filter stacking possible.

Another critical factor for me was that the Hoya Pro 1D neutral density filters are multi-coated, which is in contrast to similar filters from B+W and Heliopan. I don't know why the other guys don't multi-coat their ND filters. B+W makes a huge deal about their coating and manufacturing techniques with every other filter in their lineup, but they go out of the way to state their neutral densities filters are not coated without an explanation. Conventional wisdom when it comes to filters seems to be the more coatings the better, and I can't imagine this situation should be any different. (If somebody can give a reason why a typical ND filter would not be coated is welcome to explain!)
05-17-2011, 09:02 PM   #4
twitch's Avatar

Join Date: Nov 2009
Posts: 4,571
Where I buy B+W filters from the price doesn't vary by the degree of ND, it's one price for a B+W ND filter and you get to pick the density you want. Only the 6 and 10 stop ND filters aren't MRC, I have no idea why that's the case.

05-18-2011, 02:10 AM   #5
Veteran Member

Join Date: Nov 2010
Location: Fife, Scotland
Posts: 834
I use the Cokin-style square ND filters (P size) as I can easily stack them, and that's what I do - stack them until I have the right amount of reduction. I have three different ones, plus a circular polarising filter I could also use if I really needed a dramatic light reduction!

I tend to be using the LCD on the back to compose with this lot, as the camera is (of course) on a tripod, and I've not had problems with not being able to see well enough.

Do remember most lenses are considerably less sharp once you start stopping them down a lot - look at the various lens tests at for some nice graphical ways of showing this. In other words using appropriate ND filters is far, far preferable to stopping down to f34 - or even f22.

  • 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, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Pentax 16-45mm DA, 67mm UV filter, 58mm UV filter (Worldwide) treue_photo Sold Items 6 04-23-2011 01:28 AM
For Sale - Sold: Pentax and Albinar 2x TCs, 2 Cokin A filter sets, 49mm Filter and Macro tubes pxpaulx Sold Items 15 02-11-2010 09:09 PM
UV filter and polarized filter mba1971 Troubleshooting and Beginner Help 7 11-09-2009 04:23 PM
Infrared Filter help? Bad filter and technique Peter Zack Photographic Technique 13 10-16-2007 06:52 AM

All times are GMT -7. The time now is 10:36 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]