Hi all.
Have been weighing up the pros and cons of the various configurations of L series telephoto zooms in this range and am wondering what you think?
I'm leaning toward the f/2.8 non-IS version of this lens...which has garnered rave reviews since it was released and remains incredibly popular.
There's a saving between the IS and non-IS model of about $700, which appeals to me.
I'm not sure I really need the image stabilisation, since my other L lenses (25-70 and 17-40) also don't have this feature and I'm getting along fine with those
I understand IS might be handy when working at the upper end (200mm) of the zoom range, but figure the non-IS f/2.8 is fast enough to enable high shutter speeds anyway.
I've really not given much thought to the two f4 versions of this lens.
I'll mostly be using this for terrestrial use with my 40D, but I wouldn't mind turning the rig skyward occasionally for some astro work too.
Any thoughts?