Should I use step-down rings to keep using my old WA adapter? at DVinfo.net

Hal Snook · May 29th, 2010, 08:48 PM

My Canon HV20 has 43mm threads, and I have a nice wide angle adapter for it. I just purchased a Canon HF S20, with a 58mm barrel, and would love to avoid paying for a new adapter. I realize I may need to use a combo of 2-3 step-down rings to use it. But I have no idea what this means for picture quality. Can anyone enlighten me?

Eric Darling · May 30th, 2010, 12:33 AM

Wouldn't you need to zoom in past the edges of the step-down conversion in that case, thereby eliminating any chance at squeezing a wider view out of your lens?

Hal Snook · May 30th, 2010, 02:24 PM

I guess that's what I'm trying to figure out. I don't know whether filter size correlates to lens size, and I'm not having much luck via Google. Maybe this ought to be moved to a Canon subforum?

Eric Darling · May 30th, 2010, 02:32 PM

Filter size correlates to lens thread size. That's not necessarily the same thing as your lens size. But, I'm pretty sure if you're needing to use a step down ring of any sort in order to put that wide angle adapter on your lens, you're probably defeating your purpose entirely, and then eating additional light and image quality in the process. I think you're much better off getting a properly sized adapter.

May 29th, 2010, 08:48 PM	#1
Hal Snook Regular Crew Join Date: Feb 2007 Location: New York, NY Posts: 41	Should I use step-down rings to keep using my old WA adapter? My Canon HV20 has 43mm threads, and I have a nice wide angle adapter for it. I just purchased a Canon HF S20, with a 58mm barrel, and would love to avoid paying for a new adapter. I realize I may need to use a combo of 2-3 step-down rings to use it. But I have no idea what this means for picture quality. Can anyone enlighten me?

May 30th, 2010, 12:33 AM	#2
Eric Darling Major Player Join Date: Jun 2006 Location: Savannah, GA Posts: 463	Wouldn't you need to zoom in past the edges of the step-down conversion in that case, thereby eliminating any chance at squeezing a wider view out of your lens?

May 30th, 2010, 02:24 PM	#3
Hal Snook Regular Crew Join Date: Feb 2007 Location: New York, NY Posts: 41	I guess that's what I'm trying to figure out. I don't know whether filter size correlates to lens size, and I'm not having much luck via Google. Maybe this ought to be moved to a Canon subforum?

May 30th, 2010, 02:32 PM	#4
Eric Darling Major Player Join Date: Jun 2006 Location: Savannah, GA Posts: 463	Filter size correlates to lens thread size. That's not necessarily the same thing as your lens size. But, I'm pretty sure if you're needing to use a step down ring of any sort in order to put that wide angle adapter on your lens, you're probably defeating your purpose entirely, and then eating additional light and image quality in the process. I think you're much better off getting a properly sized adapter.