1.8g
Nikon 20mm 1.8s Vs Nikon 20mm 1.8G For Astrophotography
Ever since the news of the Nikon mirrorless system was announced it was fair to say I was a little excited, then I had seen the changes to the lens mount and knew at an instant that this could fin...
Celestron Electronic Focus Motor
The Celelstron electronic focus motor has changed the way I achieve focus on my Celestron RASA 8. When you manually focus on in instrument like a RASA 8 it can be rather challenging, the faster the...