| Author | Thread |
|
|
09/20/2006 09:13:52 PM · #1 |
I'm looking into getting a 1.4x teleconverter to use with my EF 70-200 f/4L. For the time being I'm looking for a non-canon alternative. Can anyone recommend a specific extender?
I'm looking for tried and tested experience... I tried one at a photo shop a while back, and it didn't work with my L glass... |
|
|
|
09/20/2006 09:21:55 PM · #2 |
Sigma makes 2 you might be interested in....1.4X and 2X. The 2X will extend the physical length 2" and the 1.4X will .75". I have the 2X EX DG for my Minolta and find it doesn't degrade quality, which, with that 'L' glass is a must.
Added: There's also teleconverter's made by Tamron and Kenko, but I don't know about those.
Message edited by author 2006-09-20 21:23:06.
|
|
|
|
09/20/2006 09:50:51 PM · #3 |
I have a really nice Kenko 1.4 that works well with my 70-200 f2.8, you might want to think about not getting a 2x as you lose 2 stops and I am not sure that autofocus will still work on your lens. May look into it. I bought my kenko on the net for less then 150 with shipping NIB.
MattO
|
|
|
|
09/20/2006 10:03:14 PM · #4 |
Originally posted by MattO:
I have a really nice Kenko 1.4 that works well with my 70-200 f2.8, you might want to think about not getting a 2x as you lose 2 stops and I am not sure that autofocus will still work on your lens. May look into it. I bought my kenko on the net for less then 150 with shipping NIB.
MattO |
You are right,The F4 will not Autofocus with a 2x extender. |
|
|
|
09/20/2006 10:17:37 PM · #5 |
Originally posted by Elvis_L:
Originally posted by MattO:
I have a really nice Kenko 1.4 that works well with my 70-200 f2.8, you might want to think about not getting a 2x as you lose 2 stops and I am not sure that autofocus will still work on your lens. May look into it. I bought my kenko on the net for less then 150 with shipping NIB.
MattO |
You are right,The F4 will not Autofocus with a 2x extender. |
Right. I knew that. The one I tried that didn't work , in the store was a 1.4, though... |
|
|
|
09/20/2006 11:09:48 PM · #6 |
|
|
|
09/20/2006 11:12:11 PM · #7 |
| Says here in my instruction booklet for the F4 that the center point autofocus will still function if used with a 2x extender... |
|
|
|
09/20/2006 11:12:33 PM · #8 |
IMO, you have a lot of money tied up in the L glass, and you're better off with the Canon 1.4x, which is specifically designed/optimized for their products. That's the one I use, and the quality fall-off is negligible.
R.
|
|
|
|
09/20/2006 11:21:18 PM · #9 |
Originally posted by MattO:
I have a really nice Kenko 1.4 that works well with my 70-200 f2.8, you might want to think about not getting a 2x as you lose 2 stops and I am not sure that autofocus will still work on your lens. May look into it. I bought my kenko on the net for less then 150 with shipping NIB.
MattO |
Autofocus will work if you have a 1-series DSLR |
|
|
|
09/20/2006 11:33:59 PM · #10 |
Originally posted by doctornick:
Originally posted by MattO:
I have a really nice Kenko 1.4 that works well with my 70-200 f2.8, you might want to think about not getting a 2x as you lose 2 stops and I am not sure that autofocus will still work on your lens. May look into it. I bought my kenko on the net for less then 150 with shipping NIB.
MattO |
Autofocus will work if you have a 1-series DSLR |
But he doesnt and neither do I, that is unless you want to send me yours? :-)
MattO
|
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2026 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 01/08/2026 02:19:15 AM EST.
