using 77mm filters with step-up ring? problems? at DVinfo.net

Bogdan Apetri · May 3rd, 2004, 09:55 PM

Hi!

I plan to use 77mm filters with my DVX100A, with 72-77mm step-up ring. Is there any down-size to this? Optical problems? I wouldn't think so, but I don't know for sure.

I'm doing so because already have some 77mm filters around and, plus, I can screw them on the front thread of my telephoto adapter.

Also, I plan to buy the century .6 wide angle adapter. Does anybody know, can I use filters on this lens' front thread, too? Again, 77mm could be an advantage.

Thanks a lot!

take care everybody!

Bogdan Apetri · May 4th, 2004, 01:48 PM

OK

Ken Tanaka · May 4th, 2004, 02:18 PM

Generally, no, there's no problem using larger filters with a step-up adapter. Of course there could be some obvious physical issues, such as fitting other accessories to the front of the lens.

I can't speak for the Century lens.

Barry Green · May 4th, 2004, 03:53 PM

The Century .6x doesn't have usable front lens threads. The threads are there as part of the process for making the lens and fastening the glass in, but they're not designed for allowing you to screw something else in (according to the Century rep at NAB).

Bogdan Apetri · May 4th, 2004, 09:43 PM

Thanks, Ken and Barry, that is helpful information.

How about putting just one filter to the REAR THREAD of the Century .6 wide angle adapter? I guess it would make a (bad) difference however, the distance between the wide angle lens and the stock lens muct be critical I suppose.

If I'm right, then the ONLY option of using filters with the .6 adapter would be a matte-box, pretty expensive... Bad news.

Barry Green · May 4th, 2004, 11:28 PM

No rear threads on the .6, it mounts by bayonet, not by threads.

May 3rd, 2004, 09:55 PM	#1
Bogdan Apetri Regular Crew Join Date: Oct 2003 Location: New York, USA Posts: 117	using 77mm filters with step-up ring? problems? Hi! I plan to use 77mm filters with my DVX100A, with 72-77mm step-up ring. Is there any down-size to this? Optical problems? I wouldn't think so, but I don't know for sure. I'm doing so because already have some 77mm filters around and, plus, I can screw them on the front thread of my telephoto adapter. Also, I plan to buy the century .6 wide angle adapter. Does anybody know, can I use filters on this lens' front thread, too? Again, 77mm could be an advantage. Thanks a lot! take care everybody!

May 4th, 2004, 01:48 PM	#2
Bogdan Apetri Regular Crew Join Date: Oct 2003 Location: New York, USA Posts: 117	no answers? OK

May 4th, 2004, 02:18 PM	#3
Ken Tanaka Retired DV Info Net Almunus Join Date: Dec 2001 Location: Chicago, IL Posts: 6,943	Generally, no, there's no problem using larger filters with a step-up adapter. Of course there could be some obvious physical issues, such as fitting other accessories to the front of the lens. I can't speak for the Century lens. __________________ Lady X Films: A lady with a boring wardrobe...and a global mission. Hey, you don't have enough stuff! Buy with confidence from our sponsors. Hand-picked as the best in the business...Really! See some of my work one frame at a time: www.KenTanaka.com

May 4th, 2004, 09:43 PM	#5
Bogdan Apetri Regular Crew Join Date: Oct 2003 Location: New York, USA Posts: 117	how about the rear thread? Thanks, Ken and Barry, that is helpful information. How about putting just one filter to the REAR THREAD of the Century .6 wide angle adapter? I guess it would make a (bad) difference however, the distance between the wide angle lens and the stock lens muct be critical I suppose. If I'm right, then the ONLY option of using filters with the .6 adapter would be a matte-box, pretty expensive... Bad news.

May 4th, 2004, 03:53 PM	#4
Barry Green Barry Wan Kenobi Join Date: Jul 2003 Location: North Carolina Posts: 3,863	The Century .6x doesn't have usable front lens threads. The threads are there as part of the process for making the lens and fastening the glass in, but they're not designed for allowing you to screw something else in (according to the Century rep at NAB).

May 4th, 2004, 11:28 PM	#6
Barry Green Barry Wan Kenobi Join Date: Jul 2003 Location: North Carolina Posts: 3,863	No rear threads on the .6, it mounts by bayonet, not by threads.