Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-06-2010, 09:13 AM   #1
Senior Member




Join Date: Jan 2010
Location: Manistee, MI
Posts: 295
Cokin P series for Tamron 10-24?

I'd like to invest in a filter system for my various lenses, I am concerned about my Tamron 10-24. I have searched lots of old threads, and I find some pointing out even the Cokin Wide-angle p series holder shows vignetting on the 10-20 sigma at 10mm, while others claims they see no vig.

There doesn't seem to be much about the Tamron 10-24 (is it that new?), but I assume 10mm is 10mm, if one lens shows vig, then another might likely as well?

Can anyone share some photos at 10mm that show what kind of vig. I can expect? I mean; is it really minor, like something I can crop out without losing too much? Is it quite intrusive; what's the point of shooting at 10mm to have part of the frame covered up?

03-06-2010, 02:46 PM   #2
Ira
Inactive Account




Join Date: Mar 2009
Location: Coral Springs, FL
Photos: Gallery | Albums
Posts: 5,216
Hey--it's 10mm!!! You can't expect a one-size-fits-all filter system from ANY company for that focal length.

Also, what filters did you have in mind? Because you can totally forget about a polarizer, as opposed to their square filters, which with a teeny bit of cropping, will sure work.

BTW:

I can use ZERO filters on my 8mm.

It's the nature of the beast.
03-06-2010, 03:07 PM   #3
Senior Member




Join Date: Jan 2010
Location: Manistee, MI
Posts: 295
Original Poster
makes sense ... a popular online auction site has 77mm "thin" circ. polarizers for 1/3 the cost of a hoya or tiffen "thin", might have to give one of them a try, if all else fails, a stepdown ring will mount it on my 72mm 28-200. was also looking for a 'split' nd filter or whatever they're called, where the sky is darkened but not the ground.
03-08-2010, 04:13 PM   #4
Ira
Inactive Account




Join Date: Mar 2009
Location: Coral Springs, FL
Photos: Gallery | Albums
Posts: 5,216
QuoteOriginally posted by justDIY Quote
makes sense ... a popular online auction site has 77mm "thin" circ. polarizers for 1/3 the cost of a hoya or tiffen "thin", might have to give one of them a try, if all else fails, a stepdown ring will mount it on my 72mm 28-200. was also looking for a 'split' nd filter or whatever they're called, where the sky is darkened but not the ground.
An ND filter is really different than a polarizer, and what they call what you were explaining is a graduated filter. But if you don't position the center area correctly, where it blends from one value to the other, it's probably not going to give you exactly what you want. I speak from the film days of yore, and just started with serious DSLR, but many of the principles are the same.

I don't know what kind of shots you have in mind, or your camera, but if you're talking scenics and your camera does HDR--high dynamic range-- that may be exactly what you're looking for. And it's something I want to start experimenting with as well:

You set it for HDR, and the camera takes THREE exposures--based on highlights, mids and shadows--and processes them into one final image. From what I've seen, the results can be SPECTACULAR, and it sure as heck takes a light washed out sky and darkens/saturates it (don't know exactly how to describe it correctly) to make a beautiful image, albeit artificial looking.

Just a suggestion depending on what you're looking to achieve.

03-08-2010, 11:01 PM   #5
Veteran Member
Jewelltrail's Avatar

Join Date: May 2008
Location: Rhode Island
Photos: Albums
Posts: 4,180
QuoteQuote:
justDIY: I'd like to invest in a filter system for my various lenses, I am concerned about my Tamron 10-24. I have searched lots of old threads, and I find some pointing out even the Cokin Wide-angle p series holder shows vignetting on the 10-20 sigma at 10mm, while others claims they see no vig.
I use a polarizer on my 10-20mm Sigma, @ 10mm, and have good success. My problem is not with vignetting, but with scenes which take in too much of the Sun's glare. In those scenes, the polarizer effect can do some weird things to the sky. I try to use the polarizer when it is to my advantage.
03-10-2010, 08:09 AM   #6
Pentaxian
Ratmagiclady's Avatar

Join Date: Nov 2008
Location: GA
Photos: Gallery | Albums
Posts: 13,511
There is, by the way, an even bigger Cokin system, the Z-series, which could be the ticket if you want to use your grad ND's or whatever.
03-10-2010, 08:42 AM   #7
Senior Member




Join Date: Jan 2010
Location: Manistee, MI
Posts: 295
Original Poster
If I could afford the Z series, I could afford the Hoya SMC ultrawide filter
03-10-2010, 04:48 PM   #8
Ira
Inactive Account




Join Date: Mar 2009
Location: Coral Springs, FL
Photos: Gallery | Albums
Posts: 5,216
It's not just the size of the square filter--it's the way it's mounted.

P or Z, that Ultra-wide angle lens is going to catch the edges.

You can only bring the filter so close to the glass, and unless the filter is concave, you can't change the laws of physics.

03-11-2010, 09:08 AM   #9
Pentaxian
Ratmagiclady's Avatar

Join Date: Nov 2008
Location: GA
Photos: Gallery | Albums
Posts: 13,511
QuoteOriginally posted by Ira Quote
It's not just the size of the square filter--it's the way it's mounted.

P or Z, that Ultra-wide angle lens is going to catch the edges.

You can only bring the filter so close to the glass, and unless the filter is concave, you can't change the laws of physics.
I had the impression that the problem was actually the bracket just sneaking in, rather than the glass itself.
03-21-2010, 10:23 AM   #10
Senior Member
Big Dawg's Avatar

Join Date: Oct 2007
Location: Thach, Alabama
Photos: Gallery | Albums
Posts: 169
inherit a fortune and get the Z-series.
03-22-2010, 08:48 PM   #11
Senior Member




Join Date: Jan 2010
Location: Manistee, MI
Posts: 295
Original Poster
QuoteOriginally posted by Big Dawg Quote
inherit a fortune and get the Z-series.
I'll be winning the lotto as soon as my future self sends me some winning numbers.
03-23-2010, 08:19 PM   #12
Pentaxian
Ratmagiclady's Avatar

Join Date: Nov 2008
Location: GA
Photos: Gallery | Albums
Posts: 13,511
Ira's HDR idea is actually looking pretty good, here.
03-24-2010, 01:58 PM   #13
Ira
Inactive Account




Join Date: Mar 2009
Location: Coral Springs, FL
Photos: Gallery | Albums
Posts: 5,216
QuoteOriginally posted by Big Dawg Quote
inherit a fortune and get the Z-series.
At 8 and 10mm, the bracket would almost have to be BEHIND the front element of the lens, so the filter would have to be concave.

Otherwise, you would have to make the bracket, and the filter that goes in it, around 150 feet wide to stay out of the image.

So you can still use your P Cokin on your 10, but you'll have to crop in post!
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!
10mm, cokin, cokin p series, series, tamron, tripod
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cokin A Series versus P series kiwi_jono Pentax Camera and Field Accessories 11 04-26-2010 05:38 PM
Cokin series a filters PHOTOCOP Pentax Camera and Field Accessories 2 04-07-2010 01:51 PM
Cokin P Series, Z-Pro Series and quality filters max11 Pentax Camera and Field Accessories 2 06-08-2009 04:00 PM
Cokin P-series or Z-pro series for DA14? raider Pentax Camera and Field Accessories 8 11-14-2008 08:16 PM
Cokin P or Z series? gawan Photographic Technique 16 10-21-2007 11:57 AM



All times are GMT -7. The time now is 07:37 PM. | 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