Instruct: Classify the given review into positive or negative sentiment.
Query: Not good for all DSLRs

I bought this item as it came recommended in a book. I was thrilled to get it as it says it's compatible with all DSLRs. It seems as it might be more geared for Nikons and Canons -particularly when Canon is specifically mentioned in the small insert that are the instructions. I could not get it to work with the Alpha 200 as the manuafacturer suggested trimming to get it to fit. While they did respond to my inquiry, the instructions were very vague and I never got it to work. Very disappointed, but it may be a nice option for a Canon or a Nikon, which are two of the most popular cameras.