EF 100mm/2 USM

[tim_kong]

Hi,

I just bought a used 100/2 in mint condition. I heard it is a pretty

sharp lense and when I saw one for sale used, I just grab it after

checking the physical considiton of the lense. Unfortunately, I

can't find the time to try it out yet but I wanted to know if this

lense has FTM. Since its used, it didn't come with box and manual

anymore. Thanks for any answers.

Tim

[tommyinca]

Does it has a gold ring that said Ultrasonic in front. If it does, is has FTM capability. I believe Canon may have only make USM (FTM) version on EF mount (I am not sure) for this lens.

[eric_bell]

It does. You can see the specs and an MTF chart here:

http://consumer.usa.canon.com/ir/controller?act=ModelDetailAct&fcategoryid=152&modelid=7310

 

 

The chart predicts that this is a sharp contrasty lens good to the corners stopped down. A little soft wide open but still with very good contrast and uniform performance to the corners.

 

This has been my experience with it on an EOS3 and a 10D.

[taner]

Yes, the EF 100/2 can be manually focused full time, without the need to switch to MF on the lens. The question is, do you have the body (read the viewfinder) that will allow you to use it? In my experience, f/2 focusing with non-pro body viewfinders, that goes for film and digital, is kind of like playing the lottery... I cannot stress this enough, after having experienced manual focusing with manual focus cameras of 'yesterday', I find my manual focus experience with non-pro EOS bodies insulting (to me), and totally frustrating.

[joshchapman]

To the above poster: one method for MF which I find works fairly well is to use the focus confirmation feature found on some non-pro bodies. The AF points flash if the subject under them is in focus in MF mode. The modern equivalent of a split prism, if you will.