1. It took me a while to see that the forum (to me) was "upside down, with the latest replies at the top and the oldest at the bottom............ but why can I not always locate the "first" post to a thread
2. Please see attached.
You can get "Bahtinov" masks we all know, but can anyone remind me please of the name of the one that has three holes in that merge into ONE image when correct focus is achieved.
Thanks