I own all the small primes, love to take them out when I want to travel light and use primes. I bought the 30mm to put it in my bag instead of the 35mm f2. Perfect image quality, great focal length, just in between the 27mm and the 35mm. Use it a lot for images of flowers, small items to show detail, and also documentary work. Certainly not the lens for insects, yet great for all other purposes, and sharp and crisp. My walking around lens is the 23mm, if wider I use the 16mm and if portraits are asked for its the 50mm f2. And for close ups and standard viewing angle its the 30mm. Much more in use than the 35mm, works for me as I expected when I bought it.