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07/18/2006 04:19:43 PM · #1 |
Has anyone used a circular polarizer on the Tamron 28-75/2.8 XR DI?
I want to know if you used an ultra-thin type or the normal size. Did you get any vignetting? I am considering getting a Hoya multi-coated cir.polarizer for the Tamron and am wondering if I need to spend the (quite a bit more) money for the ultra thin version...
I understand that polarizers can cause vignetting on such a wide angle lens... just looking for a witness... |
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07/18/2006 04:22:29 PM · #2 |
| With which cam are you going to use it? If an APS-C (1.5 or 1.6-crop DSLR) you will certainly be fine with a standard filter. Even on FF, a 28mm lens probably will not show any vignetting with a standard filter. |
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07/18/2006 04:24:44 PM · #3 |
| What about a 17-40 on a 5d? |
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07/18/2006 04:30:10 PM · #4 |
Originally posted by Elvis_L:
What about a 17-40 on a 5d? |
You may or may not need a thin filter. Though 17mm is *wide* on 35mm format, the 17-40 uses a 77mm filter(much larger than the front element) and the front element is close to the filter ring. I'd try a standard UV filter in a camera shop and see. |
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07/18/2006 04:30:49 PM · #5 |
| KIRBIC - I will be using the Tamron on a Canon 350D |
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07/18/2006 04:32:44 PM · #6 |
Originally posted by santaspores:
KIRBIC - I will be using the Tamron on a Canon 350D |
Standard filter will be just fine. |
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07/18/2006 04:36:06 PM · #7 |
Originally posted by kirbic:
Originally posted by Elvis_L:
What about a 17-40 on a 5d? |
You may or may not need a thin filter. Though 17mm is *wide* on 35mm format, the 17-40 uses a 77mm filter(much larger than the front element) and the front element is close to the filter ring. I'd try a standard UV filter in a camera shop and see. |
Thanks. |
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07/18/2006 04:38:00 PM · #8 |
| Kirbik - I am assuming that by "standard" you mean the non-thin circular polarizer - is that right? Or did you intend to mean that I should just buy a ND? |
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07/18/2006 04:39:32 PM · #9 |
I used a circular polarizer(Hoya) on my 5D with the 17-40 lens for this shot:
At first it appears to be vignetting in the sky, but when I look at the bottom of the image...no vignetting. My guess as to why my sky looks the way it does is the angle of the sun versus the angle of my camera.
Kirbic - do you have any thoughts?
Also, I have encountered serious vignetting when at 17mm - but it turns out to not be the filter/lens that is causing it, but rather the metal portion of the filter...I can see so wide that the filter casing itself is blocking my vision in the corners.
hope this helps.
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07/18/2006 04:47:51 PM · #10 |
Originally posted by jwillerton:
At first it appears to be vignetting in the sky, but when I look at the bottom of the image...no vignetting. My guess as to why my sky looks the way it does is the angle of the sun versus the angle of my camera.
Kirbic - do you have any thoughts? |
I agree, what your seeing is the variable effect of the polarizer across the sky. This shot is a great example of that...
Originally posted by jwillerton:
Also, I have encountered serious vignetting when at 17mm - but it turns out to not be the filter/lens that is causing it, but rather the metal portion of the filter...I can see so wide that the filter casing itself is blocking my vision in the corners. |
That's the kind of vignetting that is usually encountered with ultra-wides and filters. It answers Elvis_L's question conclusively; seems he needs a thin polarizer for the 17-40. |
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07/18/2006 07:04:12 PM · #11 |
[quote=santaspores] Has anyone used a circular polarizer on the Tamron 28-75/2.8 XR DI?[quote]
I use one all the time, no problem with that lens on your cam. Probably already asked and answered, but there it is.
R.
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07/18/2006 08:02:15 PM · #12 |
Originally posted by santaspores:
Kirbik - I am assuming that by "standard" you mean the non-thin circular polarizer - is that right? Or did you intend to mean that I should just buy a ND? |
Yes, the standard thickness (non-thin) CP. |
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