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Old October 20th, 2003, 04:36 AM   #1
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Step Up or Step Down

What is better for lens and filters when you can't find your exact thread size. A step up ring or a step down ring? How much of a gap is too much. My ? pertains specefically to fisheye's, but use this thread to discuss all lens and filters.


I am getting a pana 953 which has a 43mm filter size. Should I get a Raynox hd3030 .3x with a 43mm to 37mm adapter ring or should I get a Raynow mx3000 .3x which I would have to buy a 43mm to 58mm adapter ring?
Thanks for all the help.
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Old October 20th, 2003, 06:01 AM   #2
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Perhaps Tom Hardwick can best answer this, as well as suggest the better Raynox for your PV-DV953. Personally, I'd go with the bigger threads, and step down to 43mm.
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Old October 20th, 2003, 12:47 PM   #3
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Stepping down is asking for problems. IMO
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Old October 20th, 2003, 01:09 PM   #4
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I meant the larger threaded adaptor ---> smaller threads on the cam. Bryan, how will this create problems?
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Old October 20th, 2003, 03:06 PM   #5
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It is a very confusing manner of naming the adapter rings. Some places call step-up rings, step down rings and vice versa. Very confusing. My understanding is the correct terminology is if the lens is 58mm filter size and you want to use a 67mm filter, you need a step down ring. If you want to put a 49mm filter on the same 58mm filter size lens, you would use a step-up ring. The 49mm filter would probably cause vignetting (darkening of the corners) and not be usable at most apertures.
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Old October 20th, 2003, 03:10 PM   #6
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That's a step up Frank. I'm agreeing with you buddy :)
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Old October 20th, 2003, 04:11 PM   #7
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Not enough coffee yet, d_mn, and I got to go out in that pouring rain soon. Another 70mm or more expected. :rolleyes.gif:
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Old October 20th, 2003, 06:34 PM   #8
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That's what you get for living in Sunny Hongcouver :eek.gif:
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