Will the AF and all the other functions work properly (in case I need it) with the combination of 40D(or 5D)+100-400+1.4 TC?
eaglesnest Member 189 posts Joined Jan 2006 Location: Ontario, Canada More info | Jul 21, 2010 10:49 | #1 Will the AF and all the other functions work properly (in case I need it) with the combination of 40D(or 5D)+100-400+1.4 TC? www.eaglesnestphotography.com
LOG IN TO REPLY |
crn3371 Cream of the Crop  7,198 posts Likes: 2 Joined Mar 2005 Location: SoCal, USA More info | Jul 21, 2010 11:15 | #2 Not really. Have a read of the tcon sticky at the top of the lens forum. Canon bodies such as yours need f5.6 or better to auto focus, the 1 series bodies go up to f8. The 1.4 tcon costs you a stop of light, so the 100-400 won't auto focus. Perhaps intermittently if you use the tape trick, but not very efficiently.
LOG IN TO REPLY |
 | x 1600 |
| y 1600 |
| Log in Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!
|
| ||
| Latest registered member is ANebinger 1071 guests, 186 members online Simultaneous users record so far is 15,144, that happened on Nov 22, 2018 | |||
