Lens speed - Wikipedia
3.0Megapixel C Mount 35 mm 2/3 Inch F1.4 FA Machine Vision Fixed
Fixed-Focal Lenses, FA and Machine Vision Lenses
High-Quality Lens Used In Industrial Automation Machine Vision. Low Distortion 2/3 Image Size. C-Mount Compact Design Locking Screws For Focus And
FA 16mm 2/3 Fixed Focal Lens Machine Vision Industrial Camera C-Mount Lens
PENTAX Full Frame Lens HD PENTAX-FA 31mmF1.8 Limited – PENTAX
Ricoh Announces Two Pentax DSLR Lenses For Sports, Action
Photography 101: A quick guide on interchangeable camera lenses
5.0MP C-mount 6mm FA Lens 2/3 F1.4 Industrial Camera Len
Ricoh announces pair of 50mm F1.4 K-mount lenses: Digital