400mm 5.6 - Birding and wildlife?
Posted: Fri Sep 30, 2005 3:50 pm
Hi all,
I have been toying with buying this (Canon) lens for a while. Now I have a little bit of extra cash I am thinking about it more seriously. It would be my only long glass and thus would be pressed into service for birding and wildlife.
1. Is 400mm still too short?
2. Is 5.6 too slow?
It has a very good rep as being very sharp, and very fast AF.
But I am concerned that 400 may be too short, and that at 5.6 maybe it won't be quite fast enough in fading light to give me high enough shutter speed for non-blurred photos (motion blur, not holding blur - I would use a monopod or tripod).
My current longest lens is 200 ( 70-200 2.8 ).
I don't want to get something that won't do what I want, this lens is fairly specialised application for me. It is an area I would like to get into (wildlife/birding) and I don't want to go in with the wrong tools.
Furthermore - I really don't have the budget for a 500 f4 or 600 lens, so I guess if this lens won't do it, then there is no point in me getting the lens. I suppose I could tee it with a 1.4x TC and get a 560 f8 lens - but that's even slower, and no AF. I would also maybe try and use it for motorsports, but I think it might be a tad too long?
The other option I might think about is the Sigma 120-300 2.8. With a 1.4x TC it gives me 400 at f4, and is also a little more flexible. Of course, it is also a lot bigger and about $600 more (going off eBay prices).
I have been toying with buying this (Canon) lens for a while. Now I have a little bit of extra cash I am thinking about it more seriously. It would be my only long glass and thus would be pressed into service for birding and wildlife.
1. Is 400mm still too short?
2. Is 5.6 too slow?
It has a very good rep as being very sharp, and very fast AF.
But I am concerned that 400 may be too short, and that at 5.6 maybe it won't be quite fast enough in fading light to give me high enough shutter speed for non-blurred photos (motion blur, not holding blur - I would use a monopod or tripod).
My current longest lens is 200 ( 70-200 2.8 ).
I don't want to get something that won't do what I want, this lens is fairly specialised application for me. It is an area I would like to get into (wildlife/birding) and I don't want to go in with the wrong tools.
Furthermore - I really don't have the budget for a 500 f4 or 600 lens, so I guess if this lens won't do it, then there is no point in me getting the lens. I suppose I could tee it with a 1.4x TC and get a 560 f8 lens - but that's even slower, and no AF. I would also maybe try and use it for motorsports, but I think it might be a tad too long?
The other option I might think about is the Sigma 120-300 2.8. With a 1.4x TC it gives me 400 at f4, and is also a little more flexible. Of course, it is also a lot bigger and about $600 more (going off eBay prices).