15th August 2009, 04:57 PM
tamron 200-500mm f5/6.3 @ 400mm?
Anyone has any idea how do we calculate the aperture f-stop @ 400mm for this lens? For example, at 500mm, we get f6.3. What about at 400mm? Because I was thinking of either buying this or canon 400mm f5.6 which cost a lot more (dunno why? Guess is the brand?)
15th August 2009, 09:25 PM
Re: tamron 200-500mm f5/6.3 @ 400mm?
Not sure about max aperture at 400mm because it depends on which lens.
Originally Posted by maisatomai
Anyways, the 400L is much more expensive as it is a white tele prime (IQ is top-notch) and is by Canon.The build quality is also much better than the Tamron. If you can afford it, by all means go for the 400L