Good morning to all,
I would like to ask you a question, that does not give me peace ...
The extreme tele, are better AutoFocus (AF) or manual focus (MF), this stems from the fact that I wanted one.
I have already a A * 300 mm F/2.8, but I never use, this because I love "retain/keep" to better lenses, like in a museum.
I have the chance to have a A * 400 mm F/2.8, one here in the Forum, and one in Italy next to me.
Then always in my country, a A * 500 mm f/5.6, and continents away an FA * 250-600 mm.
Here's the point is that I don't know what to choose, and I ask your help.
FA * 250-600 mm, I really like the fact that both zoom and Autofocus,
I don't like that is f/5.6, and that and which the seller declares dust, internal ...
A * 400 mm, I like the fact that both F/2.8, which is "mighty" has a huge front lens in the world, there are very few 400 so bright.
Since f/2.8 can multiply to 2 x, having a 800 mm F/5.6 on Aps-c 1200mm F/5.6
I don't like it, some say on aps-c a 600 F/2.8 is little usable at F/2.8 shallow depth of field.
A * 600 mm F/5.6, talks about it all well even all open.
I'm afraid that is dark, and I'm afraid that not being zoom, I could be "long" or "short".
Other my fear that having a long 600 mm focal so, have a MF lens, is slow, that is, the birds are fast, even if I wanted to photograph a person, who speaks moves the head quickly.
However, there are those who say that also AF lenses, are not always so clear, and I think that's true.
Now tell me, your opinions/thoughts, to understand what lens to buy
Thanks everyone, in advance, for courtesy.