Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
It's hard to believe everything they say about the quality and performance of Canon L series lenses, however, once you have tried one of this caliber it's hard to go back to anything else. This glass lives up to all of those expectations and really spoils you. The image quality, color, contrast and image depth are stunning. I use this for portraiture and also for photographing my oil paintings. Technically, you shouldn't use a lens like this to shoot paintings because it shouldn't be able to take pictures as sharp as a prime---however---the sharpness is simply amazing. As for weight it's not a problem---the 2.8 is worth it. Built tough. I highly recommend this lens!

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