70-200 f/2.8 IS L II -VS- 135 f/2 L + 70-200 f/4 IS L

[mjp]

Ok so I bit the bullet and bought the 70-200 f2.8 IS II!!!

Great choice! It might end up being your favorite lens!
Don't have any info on the Kenko TC's, sorry.

[KreutzerPhotography]

I have the 70-200 f4 L IS and I love it. It is light and pretty fast. Extremely Sharp and the IS is AMAZING. I do dream of upgrading to the 2.8 IS II but that will be awhile. I have shot 2.8 NON-IS and wont look at that lens (I shoot weddings and Concerts Mainly). I prefer the extra stops from IS rather than the extra stop of f/2.8. Some day Ill get the 2.8 IS II.

[Marsu42]

I have the 70-200 f4 L IS and I love it. It is light and pretty fast. Extremely Sharp and the IS is AMAZING. I do dream of upgrading to the 2.8 IS II but that will be awhile. I have shot 2.8 NON-IS and wont look at that lens (I shoot weddings and Concerts Mainly). I prefer the extra stops from IS rather than the extra stop of f/2.8. Some day Ill get the 2.8 IS II.

Um, don't things tend to move on weddings and concerts? In that case, a faster lens should be more valuable. But I guess you're experiencing what many people in this forum constantly ignore - even at f4, the dof is so thin that opening up even more is not possible in most situations. If not so, wouldn't an even faster f2 or below prime be of more value in a concert when it's predictable how far the shooting distance will be?

[KreutzerPhotography]

I have the 70-200 f4 L IS and I love it. It is light and pretty fast. Extremely Sharp and the IS is AMAZING. I do dream of upgrading to the 2.8 IS II but that will be awhile. I have shot 2.8 NON-IS and wont look at that lens (I shoot weddings and Concerts Mainly). I prefer the extra stops from IS rather than the extra stop of f/2.8. Some day Ill get the 2.8 IS II.

Um, don't things tend to move on weddings and concerts? In that case, a faster lens should be more valuable. But I guess you're experiencing what many people in this forum constantly ignore - even at f4, the dof is so thin that opening up even more is not possible in most situations. If not so, wouldn't an even faster f2 or below prime be of more value in a concert when it's predictable how far the shooting distance will be?

I have had no real issues with blur. I am still able to shoot at about 1/40-60 in most scenerios. And i shoot with flash too... I am upgrading to the old 70-200 2.8 is in the next week though. I've got a friend that want to buy my f/4.

[Marsu42]

I have had no real issues with blur. I am still able to shoot at about 1/40-60 in most scenerios.

That's unexpected for me and interesting - thus the question: Are we talking about motion blur at print size or at pixel level? My experience when shooting animals with my 70-300mm is that it's best to use high speed flash of 1/500 to 1/1000sec, and for slow moving things with my 100m lens maybe 1/250. I always have to shoot a couple of 1/60 shots to get a good one, but that may not be possible at weddings.

[KreutzerPhotography]

I am looking at print level. I always have bounced flash between 1/4 and 1/1 which gives be the power to shoot at 1/40-1/60th. Depending on the light and size of the room ISO 200-800. Always worked for me!

Canon 50D w/ 70-200 f/4L IS / 580exii (1/2 power)
Canon XTi w/ 16-35mm 2.8L ii / 480exii (1/1 power)

[Mt Spokane Photography]

Does anyone have experience with the Kenko dgx tele converters? I will probably go with canon but was curious about the kenko as it can be used with non tele lenses.

The Kenko is excellent.  Its also a good buy.  You have a 30 day return window at Adorama, if you decide its not what you expected.