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03/24/2004 04:19:39 PM · #1 |
Canon Extender EF 1,4x VS Canon Extender EF 1,4x II VS
Canon Extender EF 2x VS Canon Extender EF 2x II
Does anyone no the pros and cons of these?
Is one better then the other?
I want to use it with the Canon 100-400 L USM IS.
Thanks for the help.
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03/24/2004 04:23:51 PM · #2 |
I believe the biggest difference (at least when it comes to the 1.4X) between the original and "II" series teleconverters is that the II series have "enhanced dust and moisture resistance".
According to this link, they have "a new optical system that reduces inner reflections and improves contrast" and this link says "improved features such as new anti-reflection construction inside the barrel and edge-blackening of the lens elements reduce flare"
From what I've read, the optical differences of the 1.4X TC are pretty minimal, but the -II version of the 2X is markedly better than the original.
(Note that the -II series has been out for quite a while, the Canon PR's are dated February 2001) |
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03/24/2004 04:27:06 PM · #3 |
| AND, what I didn't know when I bought my converter, is that you can only use them on the Canon "L" lenses..... |
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03/24/2004 04:30:49 PM · #4 |
| AND, not all the L lenses. Check the Canon site. |
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03/24/2004 04:51:09 PM · #5 |
Looks like the major points have been hit, just want to add that, especially for the 2.0x, the greatest issue is the lens it's being used with. ANY softness or other image defects will be magnified greatly, meaning that you want to use the best possible glass in front of it. For example, the degradation is very noticeable on my 70-200 2.8 IS wide open, I don't get same performance as lens only until 2 stops down (f/11 combined). But performance is tolerable at f/8, and so it is useable in decent light.
Also, it can be used with some "non-recommended" lenses if a 12mm extension tube is placed between the converter and the lens, but infintity focus may (read probably will) be impossible. I use it like this on the 100mm macro to get >2x magnification while maintaining good working distance and more focus range than allowed with just extension tubes.
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03/24/2004 04:51:40 PM · #6 |
The difference in the 1.4x converters is that the inside is flocked (like the inside of the newer Canon hoods)to reduce internal reflections (I haven’t noticed any difference in my actual pictures) and it has the rubber gasket that helps seal the lens to the camera if you have a 1 series body (1D, 1Ds, 1D mk 2â€Â¦). If you can find a good deal on the original EF 1.4x TC you should probably go for it unless you have a 1-series body and plan on using it under harsh conditions.
The optics on the 2x II TC are slightly improved in my experience. Basically the edges are a little sharper and this won’t be noticed very much unless you have a 1Ds or other full frame camera that you are using the TC on. My experience with the TC’s indicates that the 2x causes a significant reduction in image quality while the 1.4x has a minimal effect on the image quality.
It is true that the Canon TC’s only work with certain L lenses so if you are planning on buying a converter to use on say an EF 80-200mm f/2.8L or some other lens with glass at the very back of the lens you might want to look into 3rd party converters. I haven’t had a lot of experience with 3rd party converters except for the Tamron-F 1.4x (The cheap one). In the center of the frame the image quality is very good but near the edges, even on my digital rebel the image starts to get noticeably softer. It also seems to introduce more CA than the EF converters do. I have also noticed that if the pictures are at all overexposed I start to get haloing around the high contrast areas of the photo. The advantage is that the TC will work with any EF mount lens and it doesn’t report its presence to the body so you can retain autofocus on slower lenses without taping pins.
Greg
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03/24/2004 05:03:43 PM · #7 |
Thanks a lot everyone.
Much appreciated feed back.
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