About this product
Part Number: bm-ds-gr-55
New William Optics bahtinov focusing mask made of acrylic sheet which maximises light transmission for ease of use.
The new Optical acrylic sheet offers 92% of light transmission that gave you the highest and brightest diffraction Spikes for Focusing !
It’s approx 3 times brighter than a traditional metal mask.
|Average Rating (1 Review): |William Optics Bhatinov Mask for Dew Shield ~diameter 105mm to 148mm
Thursday, 19 March 2020 | Graham
Brilliant piece of kit.
Much better than a standard mask.
Large and brighter defraction spikes make focusing simple.
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