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10/25/2004 03:45:43 PM · #1 |
I need a UV and polarizer filter for my new Sigma 18-125.
With a dRebel, would you need to go with an ultrathin filter so as not to get vignetting, or is this not a problem given the crop factor?
If I wanted to get a 62 to 67mm step up and use the same polarizer for my 70-200/F4L and my Sigma, is the step up plus polarizer a problem at shorter focal lengths?
Also: Buyer beware: I tried to get a filter quick from Amazon, so I thought I'd try the Cokin intro set (round, screw in) which included a UV filter and Circular polarizer for $19.95. The polarizer was in the case and it was dirty, and neither looks as beautifully optically clear as a B&H filter, which is what I'd been buying (but it's been so expensive, I can hardly "afford" another!
Message edited by author 2004-10-25 15:46:42. |
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10/25/2004 04:54:12 PM · #2 |
If you decide to get an ultrathin, check if it has a thread in front (many don't). Else you cannot use a lenscap anymore.
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10/25/2004 10:03:54 PM · #3 |
| Does anyone know about what focal length you need to worry about vignetting? |
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10/25/2004 10:48:50 PM · #4 |
Originally posted by nshapiro:
Does anyone know about what focal length you need to worry about vignetting? |
I can tell you that @ 19mm on my Tamron 19-35, I have no vignetting with a standard filter. I don't think you will have a problem at 18mm either. If you go with the step-up, it should be no worse than with the standard filter alone. I'd certainly recommend a step-up ring instead of a second polarizer. |
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10/25/2004 11:40:59 PM · #5 |
So can someone recommend a good brand? I would also like to know if it would be advisable to get a circular polarizer in my largest lens diameter and get step-down rings for my other lenses. Would that cause any problems?
Thanks in advance :-) |
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10/25/2004 11:42:55 PM · #6 |
Originally posted by digistoune:
So can someone recommend a good brand? I would also like to know if it would be advisable to get a circular polarizer in my largest lens diameter and get step-down rings for my other lenses. Would that cause any problems?
Thanks in advance :-) |
Its actually a stepup ring but that works well. It can also save you a lot of money in the long run.
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10/25/2004 11:44:33 PM · #7 |
Originally posted by digistoune:
So can someone recommend a good brand? ... |
B & W and Heliopan.
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10/25/2004 11:45:08 PM · #8 |
Originally posted by jmsetzler:
Originally posted by digistoune:
So can someone recommend a good brand? I would also like to know if it would be advisable to get a circular polarizer in my largest lens diameter and get step-down rings for my other lenses. Would that cause any problems?
Thanks in advance :-) |
Its actually a stepup ring but that works well. It can also save you a lot of money in the long run. |
Step-up / Step-down... I'm sleepy... couldn't find my step-ring with both hands LOL
But what about brands? Hoya? Another brand better? |
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10/25/2004 11:47:36 PM · #9 |
I use hoya filters fairly exclusively. I'm happy with the quality. There are other brands that are as good i'm sure, but I haven't used anything other than Hoya and Tiffen.
As for the stepup ring, any brand is as good as the next.
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10/26/2004 12:30:34 AM · #10 |
| standard hoya uv on my sigma 17-35 - no problems |
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10/26/2004 12:36:06 AM · #11 |
I buy the multi coated glass filters. They help reduce flare and glare caused by the extra lens surfaces.
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10/26/2004 12:40:40 AM · #12 |
Originally posted by jmsetzler:
I buy the multi coated glass filters. They help reduce flare and glare caused by the extra lens surfaces. |
I just ran across this from a search because I was actually debating whether to buy a multicoated filter. His experience with Hoya isn't much different than mine. I had a Hoya Multicoated polarizer which I could never get clean using my lens pen. Got wet in the rain and then was never the same.
It's only one person's opinion, but worth a read:
//www.camerahobby.com/Access-Filters.htm |
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