
When I bought my 24-105 is was for my 30D (crop sensor). I later bought a 5D and I have to say the difference with that lens on a ff body is huge! You can't believe it's the same lens.
I did a comparison a while ago with the 24-105 on both bodies.
But back to the OP's question - my first L glass was the 100-400 and I absolutely love it![]()
These two canon lenses are both the same sort of price........... which is best?
Canon 70-300 IS f4-5.6
Canon 70-200 F4 L (non IS)
I can see both have advantages and disadvantages over each other but cant see a winner!
You get the extra focal length with the 70-300 and the IS but is that lot cancelled out by the constant F4 and the L of the 70-200?
i'd go for the 70-200 everytimeyou can't beat L glass, everything else is just inferior
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These two canon lenses are both the same sort of price........... which is best?
Canon 70-300 IS f4-5.6
Canon 70-200 F4 L (non IS)
I can see both have advantages and disadvantages over each other but cant see a winner!
You get the extra focal length with the 70-300 and the IS but is that lot cancelled out by the constant F4 and the L of the 70-200?
On the subject of L glass, is £650 a decent price for a secondhand 100-400 L?
I go with Canon Bob, used a 35/350 and a 17/35L 2.8 for years, going down the IS route now with 24/105 L and 100/400.
All excellent.
George
The 100-400L was my first piece of L glass. Not cheap, but a really useful zoom range and quality images.

LOL Did I? Senility setting in then.![]()