Just wondering... at DVinfo.net

Gabe Strong · July 8th, 2011, 05:33 PM

I was just thinking to myself.....with the shallow flange depth on this
camera, would it be possible for a lens adaptor to be built with a
built in ND filter wheel? Not 100% sure on the mechanics behind this,
but it seems like something an enterprising third party could build...
Just random thoughts on a Friday.

Jim Michael · July 8th, 2011, 06:00 PM

Or maybe a drop-in filter slot like you have on large tele lenses.

Dave Sperling · July 8th, 2011, 06:38 PM

or would this throw off the back focus at all? -- probably not much of an issue for primes, where you just would be a little off on the scale, but bad for parfocal zooms.
Of course such an adapter would have to be rather large, to be able to hold the (rotating turret of) filters in stand-by, out of the light path but nearby.

Brian Drysdale · July 9th, 2011, 07:44 AM

It'll be a problem for wide angle lenses... you have to design the mount factoring in the ND filter and an optical flat when you don't need ND.

July 8th, 2011, 05:33 PM	#1
Gabe Strong Major Player Join Date: Jul 2002 Location: Juneau, AK Posts: 814	Just wondering... I was just thinking to myself.....with the shallow flange depth on this camera, would it be possible for a lens adaptor to be built with a built in ND filter wheel? Not 100% sure on the mechanics behind this, but it seems like something an enterprising third party could build... Just random thoughts on a Friday.

July 8th, 2011, 06:00 PM	#2
Jim Michael Major Player Join Date: Dec 2005 Posts: 895	Re: Just wondering... Or maybe a drop-in filter slot like you have on large tele lenses.

July 8th, 2011, 06:38 PM	#3
Dave Sperling Major Player Join Date: Jan 2010 Location: Tinton Falls, NJ Posts: 780	Re: Just wondering... or would this throw off the back focus at all? -- probably not much of an issue for primes, where you just would be a little off on the scale, but bad for parfocal zooms. Of course such an adapter would have to be rather large, to be able to hold the (rotating turret of) filters in stand-by, out of the light path but nearby.

July 9th, 2011, 07:44 AM	#4
Brian Drysdale Inner Circle Join Date: Feb 2006 Location: Belfast, UK Posts: 6,152	Re: Just wondering... It'll be a problem for wide angle lenses... you have to design the mount factoring in the ND filter and an optical flat when you don't need ND.