Lowepro make several lens cases that are suitable for the separate and individual storage of lenses - which can be very useful for the storage and portability of the larger and more expensive lenses. I have several such lenses and, as such, I have several such cases!
I purchased the Lowepro Lens Case 3 (not very imaginatively named!!) for £21.99 from Amazon, which included postage and packaging. It was bought specifically to store my large Canon EF 70-200mm f/2.8 lens - which for anyone who has witnessed this lens can appreciate is large, heavy and built like a tank!
The case itself is a matte black with a pale grey interior. There is nothing flashy or anything that visually stands out about this lens case, but I think for that reason, it looks professional without drawing unnecessary attention to it which is beneficial for security reasons. The case is opened via a zip which goes around the top of the case - and then the lid flips up.
The outer layer of the case is water resistant and my lens has always remained dried when inside, even when stuck in a rainstorm in the middle of the Amazon Rainforest! Because it is water resistant, it is possible to clean the outer layers with a damp cloth in order to clean it - although its not possible to effectively do this with the inner compartment material.
The capacity of the Lowepro Lens Case 3 is 11cms x 21cms - and as such it is suitable for some of the larger lenses made by Canon, Nikon and Sigma. It is absolutely perfect in size for my Canon 70-200mm lens, but would also be suitable for a lens as big as the Canon 70-300mm (with the hood reversed). As far as the 70-200mm lens goes, the lens fits snuggly into the case but provides enough room around the edges for quick and easy removable of the lens when required. There are no other compartments besides the main one.
The case is well padded and offers great protection to the lens inside. It is not a hard shell case, but it is semi rigid, being more rigid at the top and bottom of the case. Even with a good bashing....and my lenses do get a lot of rough treatment(!) - the lens inside has always remain undamaged.
The case has a strap attached for each transportation - although it is slightly rough and can rub if you're carrying in on bare skin. This strap is removable. There is also an attachment that allows me to attach this case to the outside of my main Lowepro backpack bag - although I generally don't like to do this as I feel that its not very secure and it could easily be removed and snatched on the street.
I recommend this case as a well designed case that priorities functionality and lens protection.
If you have expensive camera equipment, then Lowepro cases are a must to protect everything. I bought this Lowepro Lens Case 3 for a big Sigma zoom lens that I have and it is perfect.
Bought from Amazon for a little over £17, you basically get a semi-rigid (more towards the rigid side) case covered with a tough canvas fabric. The top and bottom are also semi-rigid padded. £17 might initially seem expensive for a camera case, but when you spend hundreds on camera equipment, you need a good case, and they don't come much better than Lowepro.
The case has overall dimensions of 13.5 x 14.5 x 24.6 cm, with a ¾ zip round lid. It also comes supplied with a detachable shoulder strap. There are no additional pockets on the inside or out. It is just a high quality, well padded lens case with a zip top.
The main advantage of Lowepro products is that many of them are modular in that they can easily be attached together. With this lens case, it has a stiffened flap on the back which is fabric hinged to the top of the case and velcroed to the bottom of the case. My main camera case is a Lowepro TLZ AW and using this flap, I can easily attach the lens case to the side of the main camera case, creating a combined modular unit to carry everything as one.
Overall, for an individual piece, Lowepro are probably the best cases you can get, and the lens cases come in a whole range of sizes to cater for all your needs.