Canon Lenses Ef S
Hello, how good Canon EF 70-200mm f/2.8LUSM when it comes to endurance time.?

I recently bought a Canon EF 70-200mm f/2.8LUSM long after consideration and read lots of reviews on the Internet. He had discovered that one of the most acclaimed Canon lens and went for it. Today I discovered that not is weatherproof, but it is the version of the lens is weatherproof. Now my question to those who have used or have no experience with the test of time-lenses Canon is, how much can we trust this objective when it comes to taking pictures in conditions of humidity, dust etc moderate conditions? Any help from people who have used this objective would be very appreciated. I have spent considerable dollars and get worried if it was a good investment. Thanks in advance.

sealing time Canon works pretty well, but sealing the goal is only if the body is also sealed. Judging by one of her earlier questions, you use a 400D … not is sealed. If you are concerned about dust / water getting into the body, do not worry about the 70-200 either. If you are concerned, spending another $ SI 500 for the upgrade will not cut it. In that case, I suggest you take the time to close the next level and get a $ 80 cover Aquatech to protect the lens and body. Yes, you get attention, but it's not like you're invisible to the white 70-200 anyway Take a look at: http://www.aquatech.com.au/waterhousings.htm

Canon Lenses Ef S

Canon L series lenses?

Can you tell me in simple language exactly what the Canon L series lenses means that someone said that the benefits of L-series lenses (better picture quality) to accept the sum of one hundred greater than 99% better than any set L, for example 40mm f/4L USM Lens EF 17-http: / / www.bhphotovideo.com/ c/product/279582-USA/Canon_8806A002_EF_17_40mm_f_4L_USM.html best EF-S 17-85mm f/4-5.6 IS USM http://www. bhphotovideo.com/c/product/351548-USA/Canon_9517A002BA_EF_S_17_85mm_f_4_5_6_IS.html I mean is the best L 17-40 17-85 99%? Thank you in advance

In the jargon of the Canon "L" technically means luxury, that is, no expense has been spared in the design and manufacture lenses. L-series lenses also all targets full-frame for use in both Canon digital and 35mm SLR. In contrast, the EF-S 17-85mm that you mentioned that you can only use a digital SLR Canon Rebel EF-S compatible (eg XS/XSi/T1i, EOS 50D, EOS 7D) and was not built with the same environmental standards and typical structure or purpose Series L. For example, the majority of the L series lenses are fitted with rubber seals make the dust and weather resistant when combined with cameras that weathersealed 7D, 5D or 1D. This is the best image quality in a series lens L by a non-L Focal similar? It is often that the best is often subjective and not something the average person can do to make prints of normal size (4×6, 5×7 inches, etc.) or image size for e-mail or the Web. However, the differences in image quality even more obvious when you start making withdrawals more than 5×7 (ie 8×10, 11×17, 24×36, etc.) or view images in 100% increase. And even then, the difference is something to be able to see in the corners and edges of the frame. As the owner of several L and L-lenses, including the two you mentioned, I strongly suggest you compare images before you invest in yourself a series lens L. I have two lenses and prefer the 17-40mm, because it has less distortion and is more acute in the context of the 17-85mm lens. The drawback is the 17-40mm IS lens defect is good in low light. 17-85mm lens is also more "sensitive" or a wider zoom range makes it a little better as a lens for general use. The following questionnaire might be useful: 40mm f/4L USM http://www.cameralabs.com/reviews/Canon1740mmL_400D/index.shtml-17 http://www.the-digital-picture.com/Reviews/Canon-EF-17-40mm f-4.0–L-USM-Lens-17-85mm f/4-5.6 IS USM Review.aspx http:/ / www.cameralabs.com/reviews/Canon1785EFS/ http://www .the-digital-picture.com/Reviews/Canon-EF-S-17-85mm-f-4-5.6-IS-USM-Lens-Review.aspx