Instruct: Classify Amazon reviews into positive or negative sentiment
Query: for my 40d

it works well on my 40d, but the button is quite hesitant if it's already half-pressed to focus, so you have to press it gently not to entirely take the shot right away, i wish the build of this remote is the same as the 40d's rugged construction, but it's obviously not, the orginal canon remote is way more expensive than this and it's also made from plastic, i'd rather opt for this remote for a cheaper price with the same function, there's no "opteka" written on it so it's all good.**it's dead after a few days, wasted purchase, stay away from this.