designguy Offline Upload & Sell: Off
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Alan Kefauver wrote:
How does this compare to a 300F4L+1.4TC?
I have the 300F4L+1.4TC. I rented the 400F5.6 for a weekend. I didn't have the 400 for a long enough period of time to really completely understand all the differences. I did realize that the 400 seemed to perform better in ai servo (I'm using a 40D). Obviously I continue to use the 300F4L+1.4TC combo. Lately, whenever I'm using the 1.4TC I use one shot, believing that ai servo isn't reliable enough with this combo. When I use the 300 without the tc, ai servo performance is stellar! With the 1.4TC the outer image circle suffers from CA and image softness. For BIF the outer image circle is really a none issue.
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