a bit low quality plastic impossible to focus manually on a 70-300 lens when the-sun visor is mounted upside down (just for transport) and equally impossible to maintain once the focus ring to secure it ( always in this sense) because it is a little long. it will therefore be mounted to serve either stored in the bag. also let go a little light at fixing notches careful not to have the sun just aligned. Considering the price of the model Canon (+ 40) and the price of this model (10) frankly do not hesitate.