Task: Sentiment_Analysis
Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
I have used this lens countless times and am waiting for the updated version of this product with auto and manual focus controls (sic) (swm) technology.  All bonuses.

If there is something makes this product incomplete is not having the manual control on this thing.  Its so frustrating at times when I'm trying to get the lens to focus.  Sure its a fast lens and its an awesome portrait lens at that.

You have to ask yourself if its worth having manual controls and paying $100 more for, but, gives you more creative control over the lens or if you desire to have the lens do the work for you and leave it as that.  For me, its worth to pay $100 more.  Otherwise, this is a must.  The bokeh works out great and picture quality is excellent.  I have razor sharp images with this lens no doubt.

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