Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-17-2009, 11:33 AM   #1
Senior Member
jfsavage's Avatar

Join Date: Jun 2008
Location: Charlotte, NC
Posts: 211
Input requested - how wide on a Cokin P?

I've been reading various posts about the Cokin filter systems. I've seen posts that say the Cokin P is okay down to the equivalent of 14mm, but I've also seen posts saying they've had vignetting problems with the 12-24mm at <14mm.

I currently only have the 16-50mm that I would use with the Cokin, but I am hoping to get a 10-20 or 10-24 zoom in the future.

If you have any practical experience I would be grateful if you can share.

The Cokin Z is rather pricey, especially as I only want it for a graduated/split ND.

03-17-2009, 12:25 PM   #2
Veteran Member
Venturi's Avatar

Join Date: Mar 2008
Location: Tulsa, OK
Photos: Gallery
Posts: 2,636
QuoteOriginally posted by jfsavage Quote
I've been reading various posts about the Cokin filter systems. I've seen posts that say the Cokin P is okay down to the equivalent of 14mm, but I've also seen posts saying they've had vignetting problems with the 12-24mm at <14mm.

I currently only have the 16-50mm that I would use with the Cokin, but I am hoping to get a 10-20 or 10-24 zoom in the future.

If you have any practical experience I would be grateful if you can share.

The Cokin Z is rather pricey, especially as I only want it for a graduated/split ND.
The only lens I've seen any vignetting from the P-series filter system was with the Circular Polarizer on my DA12-24. I'll dig out the 12-24 and ND filters here in a few and test them out to see where they clean up.
03-17-2009, 12:59 PM   #3
Veteran Member
Venturi's Avatar

Join Date: Mar 2008
Location: Tulsa, OK
Photos: Gallery
Posts: 2,636
Test Shots

Okay, with hands free of possible pizza grease I went out and snapped a few shots with the DA12-24 and P.152 ND2 filter...

These are all completely untouched, just imported into LR2 and exported directly to JPEG, resized to 1600px.

First round @ f/4.0: 12mm and 15mm
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06967.jpg[/imgwideleft]
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06968.jpg[/imgwideleft]

Second round @ f/8.0: 12mm and 15mm
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06972.jpg[/imgwideleft]
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06973.jpg[/imgwideleft]

I see very slight vignetting at the upper and lower right corners @ 12mm but it is totally gone by 15mm.
03-17-2009, 02:04 PM   #4
Senior Member
Talisker's Avatar

Join Date: Nov 2007
Location: Isle of Skye, Scotland
Photos: Gallery
Posts: 262
The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together...

03-17-2009, 03:00 PM   #5
Veteran Member
Venturi's Avatar

Join Date: Mar 2008
Location: Tulsa, OK
Photos: Gallery
Posts: 2,636
QuoteOriginally posted by Talisker Quote
The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together...
The photos above were shot with the standard 2-slot adapter.
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06981.jpg[/imgwideleft]
03-17-2009, 03:30 PM   #6
Senior Member
jfsavage's Avatar

Join Date: Jun 2008
Location: Charlotte, NC
Posts: 211
Original Poster
@Venturi - many thanks - the slight vinette really is slight - within bounds of software correction.

I appreciate you taking time to help me out like this!
03-17-2009, 06:29 PM   #7
Veteran Member
Venturi's Avatar

Join Date: Mar 2008
Location: Tulsa, OK
Photos: Gallery
Posts: 2,636
No problem. Slow work day + bored stiff = ANY excuse to grab the camera. Glad to help.

06-06-2009, 02:41 PM   #8
Inactive Account




Join Date: May 2009
Location: Plymouth, UK
Posts: 28
QuoteOriginally posted by Talisker Quote
The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together...
is vignetting free also at 12mm or even at a 10mm?
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!
cokin, posts, tripod
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax DA 55-300mm lens Input Requested rw2mlt Pentax DSLR Discussion 14 10-09-2008 11:32 AM
Family Portrait - input requested Workingdog Photo Critique 10 06-22-2008 01:34 PM
Pictures requested by and Shashinki Post Your Photos! 5 01-30-2008 09:53 PM
Sigma 28mm f1.8 input requested gratefulbruce Pentax SLR Lens Discussion 4 01-04-2008 09:28 AM



All times are GMT -7. The time now is 02:55 AM. | 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