f2.8 is it worthwhile.

[jasongallier]

I use a 70-200 Is L 2.8 and it is a great bit of kit.

I also use lens (with and without convertors) for larger mammals or habitat/environment photographs.

F2.8 has several advantages most of which have been discussed but. If you think 200 F2.8 has a narrow DOF then try a 500mm F4.0 or 600mm F4.0!

- quick atuo focus (my 5d gives a cross-hair focusing with such a fast lens)
- reduced depth of field is an advantage (used creatively)
- still F4.0 with 1.4x convertor or 5.6 with 2x (autofocus and IS still work)
- you can always stop down - F8.0 for your bird example but a slow lens can't be speeded up!
- add 12mm or 25mm extension tube for great macro lens

Don't give it up just yet!

jason

[paulthomas]

Originally Posted by DaiTheDragon

Seajay, im'e not nocking it, it's a fantastic lens but as I shoot 95% wildlife I don't seem to have much use for it. The only time I use it is in the summer at motor racing events for my panning shots.

It's an ideal lens for certain types of wildlife - badgers for instance.