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

Input:
Good quality, especially for the price.  However, as a newby photographer, I learned something... circular polarizers don't really work very well on ultra wide angle lens's... too much variation in color change across the viewing angle expanse.  Better to use polarizing filter plates.

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