If using an adapter will I lose an f stop? at DVinfo.net

Tony Beazley · February 25th, 2002, 04:18 PM

If using an adapter will I lose an f stop or two?

Tony B

Don Palomaki · February 25th, 2002, 08:42 PM

What kind of adapter?

Tony Beazley · February 25th, 2002, 09:39 PM

For a slr lens like a Nikon telephoto.

Don Palomaki · February 26th, 2002, 07:47 PM

Check the adapter manufacturer to be sure if not Canon, but with the Canon EF Adapter you get the same f-value as the lens, as long as it is no faster than f/1.6, which is the limit of the CCD block of the XL1.

If using the Canon extender XL 1.6x, as with any teleextender, you lose somespeed. In this casy you multiply the f-value of the lens by 1.6; e.g., F/4.0 becomes f/6.4.

February 25th, 2002, 04:18 PM	#1
Tony Beazley New Boot Join Date: Feb 2002 Location: Tennessee Posts: 20	If using an adapter will I lose an f stop? If using an adapter will I lose an f stop or two? Tony B

February 25th, 2002, 08:42 PM	#2
Don Palomaki Wrangler Join Date: Sep 2001 Location: Northern VA Posts: 4,487	What kind of adapter?

February 25th, 2002, 09:39 PM	#3
Tony Beazley New Boot Join Date: Feb 2002 Location: Tennessee Posts: 20	For a slr lens like a Nikon telephoto.

February 26th, 2002, 07:47 PM	#4
Don Palomaki Wrangler Join Date: Sep 2001 Location: Northern VA Posts: 4,487	Check the adapter manufacturer to be sure if not Canon, but with the Canon EF Adapter you get the same f-value as the lens, as long as it is no faster than f/1.6, which is the limit of the CCD block of the XL1. If using the Canon extender XL 1.6x, as with any teleextender, you lose somespeed. In this casy you multiply the f-value of the lens by 1.6; e.g., F/4.0 becomes f/6.4.