Canon EF 100-400 L USM IS F:4,5-5,6 

Objective substitute of the Canon 75-300 in my equipment. With an excellent construction, fast and silent focus, and the stabilizer of image a passage.  

Canon EF 17-40 L USM F:4 

Big angular lens than in the Canon EOS 10D with his factor of multiplication allows angular enough curious. Objective of the scope L of Canon. An excellent construction, fast and silent focus, some very saturated photos and with great contrast. A great objective with all the words. 

Canon EF 38-76 F: 4,5-5,6 

Lens than was coming next to the Camera Canon EOS 3000, the construction of the lens is basically of plastic, the quality of image nothing spectacular , but an objective that I have caught on him is affection to be the first zoom that I have had . 

Canon EF 75-300 F:4,5-,5,6 

Lens that I take the place of the Tamron 80-210, with a bigger range of focal, to 300 mm, but a construction of low quality although was doing his job amply his functions to the arrival of my digital camera Canon EOS 10D in the aforementioned moment they pronounced the defects, all over chromatic aberrations. The auto-focus is quite slow. 

Sigma 105 Macro EX F:2.8 

My first lens of great quality, so much in construction as to quality of image. An objective fantastic macro that it has accompanied me from the day of his purchase and it has given big satisfactions, it is true that his auto-focus is noises and slowly, but in macro this go on to one second level. 

Tamron 80-210 f:4,5-5,6 

A lens than had it plenty of a short time, because you did not fulfill your duty by with my espectatives of quality as of focal range. Although for the dates in the the fact than I bought it did not can neither was thinking about in spending all very much in an objective. Great error why who buys two times bad and expensive purchase. The construction is better than something give it the Canon 38-76, but even you quit very much that you desire, a too noisy and slow auto-focus.