Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
I have only had this lens a short time but I am quite impressed with the high quality of both the pictures and construction. It doesn't have IS but being a macro lens that is not a feature that should be missed. If you want to take a lot of hand held photos but don't shoot much macro then get the non macro 100mm. The sharpness of the colors are comparable to L series lens. I've read other users comments that agree with that too before purchasing. I have read complaints that the lens is very slow to focus. That really depends on what you're shooting. I experimented and found if your focus is on a subject that has good contrast (not something with mostly uniform colors without much texture)then the AF is quite good. I focused on a thin object a few feet away using only the center focus point, then refocused on another subject at least 70 feet away and the lens hit the focus in a fraction of a second. The times it wants to hunt for focus is in lower light situations or when adjusting focus for a macro shot. The focusing ring works to fine tune the focus even when the lens is set in AF mode. Having a 2.8 min aperture allows for higher shutter speeds in lower light conditions  without having to up the ISO. All in all I definitely recommend this lens. The important thing to remember is take the time to LEARN how to properly use the lens before judging it. If you've never used a macro lens before it has a bit of a learning curve but well worth the time to understand it.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: A: very positive