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  Reviews by: s23chang  

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Canon EF 70-200mm f/2.8L IS II USM

Review Date: Apr 13, 2010 Recommend? yes | Price paid: $2,500.00 | Rating: 10 

Pros: Super fast AF speed. Very sharp for a prime lens. Works great with 1.4X and 2X extenders. Quiet motor.
It is pretty big. Can easily be spotted when carry around the street. People will think you're a pro.

One of the best lens made by Canon and I had all the different versions of the same lens. It is just too valueable not to leave home without it.
Due to the new sharpness and AF speed, I can see that it would help greatly with my sports shooting and using the 2X extender ( none of the older version was able to accomplish acceptable results )
Now can definitely say goodbye to the 135L
Looking forward for the new 24-70 with IS and fast AF like this.

Canon Extender EF 2x II

Review Date: Dec 3, 2006 Recommend? yes | Price paid: Not Indicated | Rating: 8 

Pros: Good contrast and maintain good detail for a 2X tele-converter.
Only works well with good lens. Period. If you have anything less than stellar prime lens then 2X is not recommended.

This review is for the Canon EF version 1 2X TC.
I have seen sites where the first version is sharper. Therefore, the results may vary depends on the tester.

I have tested this TC with many lenses at wide open only.
300mm 2.8
200-500mm 5.6-6.3
70-200mm 2.8
80-200mm 2.8
135mm 2.0
180mm 2.0

The best image quality was from 180mm 2.0 then the 135mm 2.0. The rest of the lens are not as sharp so

I think TC is as good as it can be. However, if your prime is not as good as you think, the image will definitely degraded and became unsuable.

I also tested the Canon EF 1.4X version I as well.
The 2X actually has better contrast but the 1.4X seems to retain slightly more micro detail but lost some contrast.

Tamron 200-500MM F/5-6.3 Di LD (IF)

Review Date: Sep 21, 2006 Recommend? yes | Price paid: Not Indicated | Rating: 10 

Pros: Compact, cover good range. Sharper than some older digital primes. sharpness is good as the Canon 400mm 5.6L with extra range to 500mm.

I have been shooting this lens with Canon 20D 1D MKII and 5D bodies. Works great with all formats.

After owning quite a few Canon L and non-L lens, this Tamron lens is quite impressive. It out sharps some of my old manual focus prime lens with great clarity and crisp image.

Focus speed is average, fast enough for wild life like tracking birds.

A good weight balance for handheld. Great lens for outdoor.

CA control is very good. It is noticeable only in extreme situation. But so as Canon L lens in the same situation.

It has good contrast but not as high contrast as Canon or Nikon. Good enough for manual focusing.

Manual focusing ring is good. Easy access.

According to
Sharpness outperforms the Sigma 50-500mm.
The weight is also much lighter than sigma.

The average new retail price is $839. It is hard to beat considering that you can use it as a good 500mm prime lens.
It is much better than the low end 500mm prime lens like the sigma series.
There is nothing I can really complain about this lens.
It is definitely a keeper if you don't plan to carry many prime lens.