Filters and step down rings
Jul 7, 2013 20:53:47 #
Hello all!
I have a technical(?) question concerning filters and step down rings.
My Sigma 17-50 f2.8 lens is 77mm and the next lens I am considering is a Sigma 10-20 f3.5 with 82mm.
I shoot Landscapes and travel photography (along with the obligatory family pictures).
1) Do I buy the 82mm Hoya ND400 and a step down ring? Or two Hoya's. Any side effects with the step-down ring on the 17-50?
2) Do I really need to have a ND400 for the 10-20?
3) I have a 77mm CPL and I have heard that a) I do not need it on a 10-20 lens; is this true? Also, can both the CPL & ND x400 be stacked? Is the order relative?
Thanks in advance for everyone's help. I hope this is the right forum to post this query!
I have a technical(?) question concerning filters and step down rings.
My Sigma 17-50 f2.8 lens is 77mm and the next lens I am considering is a Sigma 10-20 f3.5 with 82mm.
I shoot Landscapes and travel photography (along with the obligatory family pictures).
1) Do I buy the 82mm Hoya ND400 and a step down ring? Or two Hoya's. Any side effects with the step-down ring on the 17-50?
2) Do I really need to have a ND400 for the 10-20?
3) I have a 77mm CPL and I have heard that a) I do not need it on a 10-20 lens; is this true? Also, can both the CPL & ND x400 be stacked? Is the order relative?
Thanks in advance for everyone's help. I hope this is the right forum to post this query!
Jul 7, 2013 20:58:27 #
Stepping up to fit an 82mm filter on a 77mm lens is good. Stepping down to fit a 77mm filter on an 82mm lens will cause vignetting when used.
Jul 7, 2013 21:05:38 #
So, I should get an 82mm and ring to bring it down to 77. Or, the smc da 14mm f2.8 is 77mm filter! But I have heard that the SMC 12-24 F4 is also 77mm... but now too expensive.
The sigma 10-20 F3.5 is 82mm
I need to win the lottery!
The sigma 10-20 F3.5 is 82mm
I need to win the lottery!
Jul 7, 2013 21:12:18 #
RichardE wrote:
So, I should get an 82mm and ring to bring it down to 77.
Probably a good bet. I have a Tokina 12 - 24 and once stacked 2 filters on it and got a little vignetting. Then I pulled my head out of my a**.
If you do step down to fit a 77 on an 82, you can fix it with a little cropping. It may be workable until you can afford the bigger filter after winning PowerBall.
Jul 8, 2013 00:56:35 #
I use a nd for my 10--20 no problems at all n I never take it off as the nd adds contrast that the sigma lacks compared to the l series lenses.
Jul 8, 2013 01:49:10 #
Thanks, RocketScientist.
lumpski, what step is your ND? I think the ND x400 is a 9-2/3.
lumpski, what step is your ND? I think the ND x400 is a 9-2/3.
Jul 8, 2013 07:33:14 #
Add
Loc: S.W.Florida
If you step up from a 77 to an 82 should not be a problem.It is my normal arrangement.Step down from an 82 to a 77,you will have a problem.
Jul 8, 2013 07:40:22 #
RocketScientist wrote:
Stepping up to fit an 82mm filter on a 77mm lens is good. Stepping down to fit a 77mm filter on an 82mm lens will cause vignetting when used.
Agree completely. I use a 77mm CPL on both 77mm and 72mm lenses. No problems. Trying to use a 72mm filter on those same lenses would cause problems.
Jul 10, 2013 18:03:56 #
Jul 10, 2013 18:31:19 #
FredB
Loc: A little below the Mason-Dixon line.
Add wrote:
Ummm. Backwards. Using a filter that is LARGER than the front element of a lens is usually OK, which would be a step DOWN from 82 to 77. So unless you meant DOWN when you wrote UP, you have it backwards, no?If you step up from a 77 to an 82 should not be a problem.It is my normal arrangement.Step down from an 82 to a 77,you will have a problem.
It can get really confusing, what with the UP, DOWN and all around nonsense. I always tend to look at it from the FILTER point of view. Using a 52 mm filter on a 77 mm lens is a step UP (but obviously not recommended...lol). Using an 82 mm filter on a 77 mm lens is a step DOWN.
Other people will probably find fault with my logic, because they read it the other way around in a book in 1953... But the way I look at it, you're fitting the FILTER to the LENS, not the other way around. So your perspective should be Filter ---> Lens. 82mm ---> 77mm is down.
Jul 10, 2013 21:06:35 #
RichardE wrote:
So, I should get an 82mm and ring to bring it down to 77. Or, the smc da 14mm f2.8 is 77mm filter! But I have heard that the SMC 12-24 F4 is also 77mm... but now too expensive.
The sigma 10-20 F3.5 is 82mm
I need to win the lottery!
The sigma 10-20 F3.5 is 82mm
I need to win the lottery!
Sigma makes an older 10-20mm lens and it has a 77mm filter thread. Here's the link:
http://www.bhphotovideo.com/c/product/413425-REG/Sigma_201109_10_20mm_f_4_5_6_EX_DC.html
It's also $220.00 less. I hope this helps.
Cheers,
Tim
Jul 13, 2013 16:45:33 #
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