Denise,


I have grown to love the 85mm on my 7D. I was skeptical at first when I bought my 7D and wasn't getting the results I wanted, but I gave myself an assignment of on lens one hour and worked with it a little while. When I was done, I realized that my technique had to change from when I was using it with the rebel and since then have gotten stellar results. I had it out yesterday capturing the kids in the back yard. I will have to post a picture or two when I get the chance. It is very sharp stopped down past f2.2 on my camera and love the DoF it gives. I too own the 50mm 1.4 and the 100mm macro(original flavor) and use my 85 mostly to get the kids playing in the back yard. For larger than 3 year olds, I believe it would make a great head and shoulders lens. I have been really looking at the 135mm L for some time, but I think that for my needs it would be a little long. I did the test with my 70-200 set at 135 and shot with it for a day. It was a little tight for everything I tried. I would do as suggested above and try shooting your 100-400 at 135 for a day and see if it works for you.


Jayson