Questions about Canon EF lenses at DVinfo.net

Tim Polster · February 16th, 2008, 09:08 PM

Hello,

I see a lot of talk about needing to put Canon EF lenses on a still body to change the aperature.

I would like to ask if somebody can give me a definitive answer if this really works?

I use Canon DSLRs and would like to be able to use the same high end primes on both my video (Letus) and still cameras (5D & 30d).

Buying a used still body just for this task is no problem if it means I can use the lenses on all of my cameras.

Thanks!

Tim Polster · February 18th, 2008, 05:38 PM

I e-mailed Letus and they said this could be done by removing the lens while the camera is on to keep the iris set.

Nice to know for sure before buying.

Mark Wisniowski · April 15th, 2008, 10:43 PM

Hey Tim,

Do you mean that the DSLR camera needs to remain on while you take off the lens ?

Does this expose any risks of damage to your DSLR ?

Mark

Tim Polster · April 30th, 2008, 09:35 AM

Hey Mark,

I just found this post.

Taking a lens off while the camera being on will not hurt the camera, but it might induce more dust to collect on the sensor as the charged sensor has some static effect.

If I go with Canon lenses, I will probably buy a cheap body off of Ebay just to change the lens aperature for the Letus.

This would be worth it for me to be able to use the nice glass on my stills as well.

February 16th, 2008, 09:08 PM	#1
Tim Polster Inner Circle Join Date: Dec 2004 Location: Arlington, TX Posts: 2,231	Questions about Canon EF lenses Hello, I see a lot of talk about needing to put Canon EF lenses on a still body to change the aperature. I would like to ask if somebody can give me a definitive answer if this really works? I use Canon DSLRs and would like to be able to use the same high end primes on both my video (Letus) and still cameras (5D & 30d). Buying a used still body just for this task is no problem if it means I can use the lenses on all of my cameras. Thanks!

April 15th, 2008, 10:43 PM	#3
Mark Wisniowski Regular Crew Join Date: Dec 2005 Location: Chicago Posts: 31	Hey Tim, Do you mean that the DSLR camera needs to remain on while you take off the lens ? Does this expose any risks of damage to your DSLR ? Mark __________________ Mark Wisniowski www.probe3.com

February 18th, 2008, 05:38 PM	#2
Tim Polster Inner Circle Join Date: Dec 2004 Location: Arlington, TX Posts: 2,231	I e-mailed Letus and they said this could be done by removing the lens while the camera is on to keep the iris set. Nice to know for sure before buying.

April 30th, 2008, 09:35 AM	#4
Tim Polster Inner Circle Join Date: Dec 2004 Location: Arlington, TX Posts: 2,231	Hey Mark, I just found this post. Taking a lens off while the camera being on will not hurt the camera, but it might induce more dust to collect on the sensor as the charged sensor has some static effect. If I go with Canon lenses, I will probably buy a cheap body off of Ebay just to change the lens aperature for the Letus. This would be worth it for me to be able to use the nice glass on my stills as well.