Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Works - but has a couple of negatives
Review: Firstly, this cap works as advertised.You can get a good white balance and keep your lens protected when not in use.BUT...The 2 'buttons' that you press to place or remove the cap catch on things, especially when you put your camera in your bag. I often find the cap just stays in the bag when I pull the camera out without me knowing. So I have to be a little more careful now instead of just pulling my camera out to take a quick photo.Also, I thought I could just use the cap, take a picture of the subject like the real picture, then use that photo as the white-balance source image. But NO... You need to remember that if you do this, that any subject item that is colored will affect the white balance. What you have to do is take a direct picture of all the light sources, possibly even from the subjects perspective.I still count this as a useful tool though that will quickly get past most white-balance issues.
