[Neoprene] I've been using this lense for 9 months now. I've used from everyting from astrophtography to sports photography. It is an amazingly fast and sharp lense. It's been in the heavy snow, pouring rain, and subzero temperatures in the Rocky Mountains.

[0.175 lb] Image quality is above average and gets even better when images are processed in Canon's DPP software with Canon's own lens profile corrections applied. Matches perfectly with the 14-35 f/4 and 70-200 f/4 for a landscape kit.

[0.175 lb] So far, I love it. Great build and focusing .

[Neoprene] Tried having walking on the park for some bird shots... good i have this coz if not for this my camera would be scratch free no more, didn't notice the branch sticking infront of me and hit my camera, well, if you invest an expensive camera, why not protect it.

[Neoprene] I use to protect all my lenses, long but also short, with LensCoat covers. In fact I usually use my lensens for photographic safaris and therefore it is important to protect the lenses from unwanted scratches which can always occur, even when the utmost care is taken. Available in different patterns, they are a must to go with your lens.

[0.175 lb] I saw people raving over this lens on YouTube. The fact that it was L glass with an f4 but performed way better than expected. So I took a chance and bought it. No regrets.... It has become my own workhorse. Pretty much made my 50 worthless. I just got back from a 4 week Italy trip. I used it for food, landscape, stars, coastline and sunrise and sunsets. I never once questioned if I needed a better lens. When photographing the ancient ruins in Rome and Pompeii it was perfect. I could pick just the right zoom and depth in the photo. Really don't pass this up for the price.

[Neoprene] PERFECT FIT

[0.175 lb] I have used the 24-105 a couple of times. I really like the versatility of the 24mm and the reach of the 105mm. Pictures are sharp. So far so good. As long as your not in a low, low light situation, good to go with the F4 range. But, there is always other way to get the correct exposure with speed and ISO.

[0.175 lb] Couldn't ask for a better lens. Very sharp images and focuses fast. If you like the option that a zoom lenses gives then this is the lens for you. It is just like the 70-200 2.8 lens but only at a shorter distance. Would recommend this lens for everyone, at every level of photography.

[Neoprene] I was skeptical about using these....but it worked out great. Shooting in colder conditions and keeping everything from getting beat up. I have them for each lens now.