Instruct: Classify a review into positive or negative sentiment.
Query: A Must Have For Quality Pictures

It is the Canon OEM lens hood for their EF 28-135mm f/3.5-5.6 IS USM lens. It fits perfectly and has three main advantages:1. Cuts down lens flair2. Improves contrast and image quality - two for one3. Offers some protection to the front of the lens.As has been pointed out in other reviews, this is an expensive piece of plastic and given the cost of Canon glass should be included with the lens purchase. But that is not the case. There are other options available. From some of the reviews I have seen of the knock-offs they do not always fit and/or work as well. So for me, given my Canon investment, I just bite the bullet and add the final piece I feel I get better results with. After all, I could buy cheaper glass.This hood can be reversed on the lens for storage on the lens, but it will require a larger lens case for storage on the lens, if you use that option. And finally, it is a little tight getting the lens cap on/off with the hood in place, but it is doable.