“The adapter (the wide (~1cm) black ring included) needs to be used to work with this lens otherwise it is a bit difficult to focus. Until using the adapter It was needed to use the back focus adapter on the pi high quality camera to focus (the thin black ring on the camera which can be rotated after unscrewing the screw with the small screwdriver received with the camera).
I want to make a photo scanner and to use this lens I need an extra adapter ring to focus closer to the camera at 1.6. Hope to find one.”
“Does what it says on the tin. It is fiddly if you're trying to focus on something hard, such as the moon. You can get there, but it's a struggle - and the moon will be about 96 pixels across.”
“Of the two lens available, this one is the one I prefer. It is not as wide angle as the other lens but its image is crisper and brighter and behaves like standard 50mm lens. A good quality, well made lens. I would recommend this for general purpose use.”