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Canon EF 300mm f/4L IS USM

ef300mmf_4_1_
Review Date: Jun 15, 2007 Recommend? yes | Price paid: $1,125.00 | Rating: 10 

 
Pros: Very Sharp, I.S. works great even though it is an older version. Still sharp even with a 1.4x TC
Cons:
Lens hood does not move smoothly on my copy, my old non I.S. version did not have this problem

I have wanted to get this lens for qutie awhile, I had the original 300 f4.0 L and I loved that lens. I can't say for sure but it seems to be as sharp as the non I.S. version I used to have and that was one of the sharpest lenses I have used.

I took a pic of some small text from 20 ft. away indoors at 1/25 of a sec @ f5.6 hand held with a tamron 1.4TC and it came out sharp and blur free. I can't wait to give this lens a good workout at a racetrack on fast moving vehicles.



 
Canon EF 70-300mm f/4-5.6 IS USM

70-300_isusm
Review Date: Jul 2, 2006 Recommend? yes | Price paid: $559.00 | Rating: 7 

 
Pros:
Cons:

I just got this lens and would like Canon to start building their so called cheap lenses a little better. I would gladly pay a couple hundred more dollars for a lens that was well built.

The lens barrel moves a lot when extended and my bet is that is what is causing the verticle shooting mode problems, since you use less of the lens for the height in landscape mode it seems logical to me that the lens barrel sagging would be less of a problem in landscape mode and more in verticle mode. I will send mine in to Cannon after July 18th and I hope they can fix it. My guess is that over time the lens will loosen up more and the problems will worsen.

Now for the good part the I.S. seems amazing and it is the reason I plan on keeping this lens, this is my first I.S. lens and now I want it on all my telephoto lenses. If Canon can fix the problem with this lens I would recommend it highly.