Thanks Joshua for putting together this custom fine focus aid for my Canon 300mm F4 lens.
Anyone who has ever tried focusing on a star with a camera lens would know how touchy they can be - even a very small movement can move you right through the focus point & out the other side. And the slightest bump you have to waste much time getting the focus back again. With this I can set up close to infinite focus and make the micro adjustments needed easily, with the added bonus of the unit holding the focus ring in place. Hopefully the weather will eventually clear here next weekend so I can test it out properly.
The image here shows it with my EAA setup, the Canon lens connected to my 224MC. If this works as it should, I will be giving it a run with my narrowband setup for some larger targets.
Again, thanks Joshua.
Cheers,
Mark
|