What are depth of field indicators on a lens? – frederikboving
VCC 1050 Series Neon Panel Mount Indicator Light with Tab Terminals and Hi Hat Lens, 0.500-Inch/12.7mm Diameter, 125 Volt, Green: Electronic Components: Amazon.com: Industrial & Scientific
Colored Lens Indicator Lamps – Comet Pinball, Inc.
Colored Lens Indicator Lamps – Comet Pinball, Inc.
IMASEN Amber Lens Indicator Signal Light Motorcycle~SAE D71 AU 40 26408~Set of 2 | eBay
These Easy-to-Read Lens Labels Help You Quickly Identify Gear | PetaPixel
Colored Lens Indicator Lamps – Comet Pinball, Inc.
Lucas Glass Lens Classic Amber Indicator 73mm Pair
Amazon.com: Partsam 2 Pcs Mini-Reflex Red Clear Lens Side indicator LED Marker Clearance Truck Light w/2 Standard Pin, Sealed Faceted 2.5" Round LED Trailer Sidelight ID Light Identification Taillight 13 Diodes :
These stylish labels make it easier to identify your lenses: Digital Photography Review
Indicator Lens Right BMW K100RS & K1100RS; 46 63 1 453 002 / EnDuraLast
Rear Lens Cap Skins with Focal Length Indicator V1
Canon RF Camera Lens & Body Identification stickers | Field Made Co.