Fujinon S20x6.4 BERM-SD at DVinfo.net

Bob Schoemer · April 2nd, 2017, 12:51 PM

Picked up this lens on a JVC-GY-DV500. I think lens is worth more the the DV500. Plan to use on my GY-DV5000 though.

Have a novice question, what is the extender used for and how would you use it?

Thanks for you reply.

Seth Bloombaum · April 2nd, 2017, 02:45 PM

Not familiar with this specific lens, but a built-in extender is typical of a broadcast-style lens.

It is a built-in telephoto adapter, typically adding 2x effective focal length. That is, when you switch it in, your lens becomes more telephoto, and would lose a couple stops of light as well.

You can flip the lever any time you have gone to the end of the zoom range of the lens, and think you want a bit more! Great for outdoor sports, etc., but getting that much telephoto may make you wish you are on a tripod.

April 2nd, 2017, 12:51 PM	#1
Bob Schoemer New Boot Join Date: Jul 2016 Location: Blue Bell, PA Posts: 14	Fujinon S20x6.4 BERM-SD Picked up this lens on a JVC-GY-DV500. I think lens is worth more the the DV500. Plan to use on my GY-DV5000 though. Have a novice question, what is the extender used for and how would you use it? Thanks for you reply.

April 2nd, 2017, 02:45 PM	#2
Seth Bloombaum Inner Circle Join Date: Sep 2003 Location: Portland, Oregon Posts: 3,420	Re: Fujinon S20x6.4 BERM-SD Not familiar with this specific lens, but a built-in extender is typical of a broadcast-style lens. It is a built-in telephoto adapter, typically adding 2x effective focal length. That is, when you switch it in, your lens becomes more telephoto, and would lose a couple stops of light as well. You can flip the lever any time you have gone to the end of the zoom range of the lens, and think you want a bit more! Great for outdoor sports, etc., but getting that much telephoto may make you wish you are on a tripod. __________________ 30 years of pro media production. Vegas user since 1.0. Webcaster since 1997. Freelancer since 2000. College instructor since 2001.