Company Website: https://www.lockcircle.com/primecircle/
Duclos Page: N/A
Italian based company, specializing in still lens modifications as well as lens accessories.

Prime Circle XT 15mm f/2.8
Prime Circle XT 18mm f/3.5
Prime Circle XT 21mm f/2.8
Prime Circle XT 25mm f/2
Prime Circle XT 28mm f/2
Prime Circle XT 35mm f/1.4
Prime Circle XT 50mm f/1.4
Prime Circle XT 50mm f/1.4 Makro
Prime Circle XT 85mm f/1.4
Prime Circle XT 100mm f/2 Makro
Prime Circle XT APO 135mm f/2

Prime Circle XM 15mm f/2.8
Prime Circle XM 21mm f/2.8
Prime Circle XM 25mm f/2
Prime Circle XM 28mm f/2
Prime Circle XM 35mm f/1.4
Prime Circle XM 50mm f/1.4
Prime Circle XM 85mm f/1.4
Prime Circle XM 100mm f/2 Makro
Prime Circle XM APO 135mm f/2

Prime Circle XE 15mm f/2.8
Prime Circle XE 21mm f/2.8
Prime Circle XE 25mm f/2
Prime Circle XE 28mm f/2
Prime Circle XE 35mm f/1.4
Prime Circle XE 50mm f/1.4
Prime Circle XE 85mm f/1.4
Prime Circle XE 100mm f/2 Makro
Prime Circle XE APO 135mm f/2

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