Astrodymium Bahtinov Mask Focusing Aid for Rokinon - Samyang 135mm F2 Lens

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About this product

Astrodymium Bahtinov Mask Focusing Aid for Rokinon / Samyang 135mm F/2 Lens

Focus on more important matters with the aid of a bahtinov mask.

A Bahtinov mask produces a distinctive spiked pattern on a bright star - you'll know when the focus is perfect when the third spike moves into the centre. No guessing anymore!

Designed to work specifically with the Rokinon/Samyang 135mm F2 lens, using a high Bahtinov factor of 100 (higher factor produces a sharper pattern). 

What's included:

• 1x Bahtinov mask (93.5mm inner diameter)

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