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  Reviews by: Y_vdm  

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Canon Speedlite 580EX II

580exii
Review Date: Oct 29, 2007 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: build like a tank, battery door, almost no noise when charging, integration with 40d, trustable
Cons:

I first used a Sigma DG500 Super, because the price. The battery door is a nightmare and the exposition almost never good. Reading a lot of posts on the net I doubted about my technical capabilities Smile

Fist of all : shooting ETTL you have to avoid, as I did, to recompose after focus on the central focus point...

Now that I need flash power, I have to find something better and I decided to go to the Canon 580EX II over Metz for the integration in the menu system of the Canon 40d (my old 20d now becomes backup camera)

Wow ... it's really another world. Evrything works fine and thanks to Canon I'm really happy. The FEL is also a good feature.

Good reviews about technicals aspects on those sites :

http://cpn.canon-europe.com/content/infobank/flash/flash_exposure_lock_and_compensation.do

http://photonotes.org/articles/eos-flash/

http://super.nova.org/DPR/Canon/Exposure/



 
Tamron 17-50mm F/2.8 XR Di II LD Aspherical [IF]

1750diII
Review Date: May 7, 2007 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: ligth, sharp, build, hood
Cons:
no USM

Never buying a lens trough Internet, I prefer to test at the shop. They let me test 3 items of this lens on my 20D. One was really soft, the two others reasonably sharp.

Build quality is not like my L lenses but it's OK. I had a (very) bad with the Sigma model and this Tamron gives the result that I expect.

No DXO driver for this lens at this time. Hope it will be available soon.


 
Canon EF 70-200mm f/2.8L USM

ef70_200_28_1_
Review Date: Sep 1, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: Sharp, fast and silent focus, build quality, hood included
Cons:
mounting tripod collar need to unmount the lens, weigth

I looked for a portrait lens for my 20d.

Going to the shop to buy the Sigma ex 70-200 in the new DG version, I asked to try - only try - the Canon NON IS white zoom, because white is to "look at me" and to pricy.

Having this lens in hands and on the camera was so surprising : manual focus with one finger, autofocus fast and silent, results really sharp, bokeh .... so I buy it !

I'm really happy with this lens, as I don't need the IS version. I also bougth the Canon 1.4x II giving various results from acceptable to sharp.

I take away the tripod collar for much acceptable weight, and use it when really needed, because having to unmount the lens. Why doesn't Canon do as Sigma with his 70-200 ex dg articulated collar ?

Based on my experience, I changed my opinion about white lens : it is still affordable and gives outstanding results. White color is most of the time an advantage : photographied peoples gives you more time to catch the moment and other peoples less often comes between you and the subject because they begin to think in reaction on the lens color.


 
Sigma 18-50mm F2.8 EX DC

18-50f28
Review Date: Sep 1, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 6 

 
Pros: build, focus noise not so loud, size, comes with hood
Cons:
focus unstable, soft on all apertures

Concept :

This lens would be the perfect all-day lens on my 20d body.

The build quality is OK, giving a pro feeling. However when touching the focus ring when focusing gives allways a "hum, ... be carefull" reaction.

Compared with the results from my 70-200 2.8 L (non IS), the Sigma is really soft.

What's really strange is that when focusing 3 times on the same subject (only central focus point enabled), it focus 3 times on different distances. I tried this procedure on various targets (short and long distances, ...). Trouble is that the infinity seems to be really far away as for a subject at a 200 meters distance, I'm not at infinity focus point .... and when refocusing, the results vary for the same delta that for 1-2 meters for close shots. As at end of the focus range this delta correspond to around 50 meters, I'm in the trouble.

Conclusion :

I need this lens, and will return back to Sigma for calibration. I hope that when it comes back it will be sharp enough.