What are the problems w/ Canon 100 to 300 mm len or 100 to 400 mm lens?

Happy Hopping

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Awhile ago, I read the spec. of their 100 to 300 mm lens as well as the 100 to 400 mm lens. I spotted something really wrong, in a way that if you compares to the 17 to 85 mm lens.

In other words, there is something that the 17 to 85 mm lens (the lower range lens) does, that these 100 to 300 mm lens does not do. It's some important. But now, I forgot what I found.

Does any1 know what are the features that the 100 to 300 lens does not have in compares to 17 to 85 mm lens? Needless to say, I am not talking about the mm range. I vaguely recall the 17 to 85 mm type lens does something automatic whereas the 100 to 300, 100 to 400 mm cannot do it.
 
About the only thing I can think of is that the 17-85 has Image Stabilization and the 100-300 does not.
 
the 100-300 isn't the best in the world. it has some faults. and it scores poorly on image quality. Read this review on it.

The 100-400 is an L quality lens, and is very good for it's price at 400mm. Read this review on it.

These are just starting points.
 
I figure out what it is--I need to make sure the 300 or 400 mm is not a Push/Pull old style.

However, your post make me wonder-- I didn't know some of those lens are made back in 1990, so I should also check out those tele lens and make sure they are newer in production. Preferably in the last few yr.
 
I would say get the 100-400, it has IS and is a L lens :)

Plus it has more reach, so if you ever upgrade to a FF you will not be effected as much.
 
Canon 100-400L IS is a push/pull style zoom

No matter when it was made.
 
I found a few lens from Sigma that does a longer range. I'll post a new thread and see what other said
 
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