How about the 400mm f5.6L with the 5DIII

I have a 70-200 2.8II
I was looking at the 2XIII extender but there are too many negative comments about the results.
Now that I have the Mark III with the great AF system for AI Servo, I would love to hear comments about what you think of this lens on the Mark III.

http://www.amazon.com …?ie=UTF8&showVi​ewpoints=1

The AF points and what would be useable, using AI Servo and the plusses and minuses etc.

Care to share?

Thank you very much.

Karl

Subscribed.

i've been looking at picking that lens up. Why don't you do it and report back on how you like it. I can't imagine why it wouldn't be a great lens on the 5d3.

The 400mm f/5.6L is a great fast focusing lens that provides top-notch image quality even when shot wide open.

IMAGE LINK: http://rpcrowe.smugmug​.com …36168847&k=C9BH​A&lb=1&s=A

So the lack of IS could be an issue eh?

The obvious answer is to crank up the shutter speed.. the downside would be if you need a slower shutter speed intentionally.

KarlGB77 wrote in post #14621060
So the lack of IS could be an issue eh?

Not for me, I turn it off on my 300 and 70-200 2.8.

I was very close to pulling the trigger on that lens. But, I have to say I've been having a blast with the 2xIII and my 70-200 II. Much faster AF than I would have expected based on some of the reviews I've read and the IQ is very good. Takes up only a little room in my bag. At this point, I'm not missing a dedicated 400 at all.

Fodowsky wrote in post #14621980
I was very close to pulling the trigger on that lens. But, I have to say I've been having a blast with the 2xIII and my 70-200 II. Much faster AF than I would have expected based on some of the reviews I've read and the IQ is very good. Takes up only a little room in my bag. At this point, I'm not missing a dedicated 400 at all.

I'd love to try the f/2.8L IS ii combined with the 1.4x TC iii but, I am afraid to do it. I am happy with mylenses now and don't want to start another buying spree.

RPCrowe wrote in post #14621994
I'd love to try the f/2.8L IS ii combined with the 1.4x TC iii but, I am afraid to do it. I am happy with mylenses now and don't want to start another buying spree.

I went back and forth for a long time. Decided to try it but purchased from a place where I could return it if I wasn't satisfied. Glad I did. For my use, the extender is working well. Of course, that could change!!

Do you think the 1.4X III would be sharper with the 70-200 2.8 II than the 2X III?

Anyone using their 5D3 for wildlife and birds in flight?

Karl

I have the 70-200 and the 2x mark III.
I barely see any IQ drop when using that combo. I'm not saying there isn't one, but its not that noticeable unless you peeping pixels all day long.
And its much cheaper and easier to carry than bringing both the 70-200 and 400 with you.
I don't have the 1.4x yet, but I heard that the mark III also has a very minor change in IQ.

The 400 f/5.6 is a great lens regardless of camera. I've used it on a 40d, 7d, 1d III and 5d and never had any issues.

palmor wrote in post #14623841
The 400 f/5.6 is a great lens regardless of camera. I've used it on a 40d, 7d, 1d III and 5d and never had any issues.

I just meant in the context if using the AF in AI servo on the 5DIII.
For instance, the usable cross type points at various aperatures and what that may mean when shooting birds in flight.
Will it not work as well as the 2.8? Will it not track as well?
Would you guys say that sunrise and sunset shooting are not an option due to the 5.6 and no IS?

The lens sounds great for IQ but at good light only??
Maybe the 2X III would be better with the 70 -200 2.8 II.

Thanks

Karl

KarlGB77 wrote in post #14624176
I just meant in the context if using the AF in AI servo on the 5DIII.
For instance, the usable cross type points at various aperatures and what that may mean when shooting birds in flight.
Will it not work as well as the 2.8? Will it not track as well?
Would you guys say that sunrise and sunset shooting are not an option due to the 5.6 and no IS?

The lens sounds great for IQ but at good light only??
Maybe the 2X III would be better with the 70 -200 2.8 II.

Thanks

Karl

The AF in the 5d III is better then my 7d or 1d III so there isn't anything that hinders the 5d vs any other camera.

I think the question is more generic then 5d III specific. The 400 f/5.6 will most likely track and AF better then the 70-200 with a 2x TC. If you need 400mm then both options are going to be @f/5.6 so there is no light advantage between the two. The only advantage of the 70-200 is if you want to shoot at 200mm. I don't find a lack of IS an issue (I'd either use a mono/tripod or bump the ISO up as needed).

Not sure if that helps, it is kind of a personal preference in what you want.