Please note I will now only ship with tracked international shipping due to a high proportion of missing parcels when using untracked economy services.

Perfect focus every time & no more blurry bahtinov spikes!

See my first revision of this mask in action in one my YouTube videos here - skip to 10:48 for the demonstration

https://youtu.be/4oIIKeDefd0

And see the current revision mask here in this video of mine too - skip to around 45 seconds :-)

https://youtu.be/sdLsKqoExCM

I grew tired of struggling to achieve perfect focus with the in built bahtinov mask on my redcat, so decided to make my own replacement, after a few revisions with my 3d printed prototypes I came up with this.

A big upgrade in clarity which makes it so much easier to see if you are in perfect focus or not, with the added benefit of your focus adjustments being more clearly visible thanks to the increased diffraction.

William Optics Redcat 51 & ZS61 Upgraded Bahtinov Mask - Focus Mask.

Please see my feedback, many happy customers!! :-)