Bought an amazing Vivitar Series 1 90mm f/2.5 awhile back. This lens has proven to be so much more than just a macro lens, so versatile and laser sharp! : r/VintageLenses
Vivitar 90mm f2.5 Olympus OM mount macro "Bokina" for Sale in Cerritos, CA - OfferUp
The Bokina 90mm sibbling shootout: Pentax SLR Talk Forum: Digital Photography Review
Tokina AT-X Macro 90mm 1:2.5 Review
Making Not Taking: Tokina 90mm f/2.5 AT-X Macro - The "Bokina"
A+ Vivitar Series 1 1:1 adapter for 90mm f/2.5 "Bokina" Macro Lens Minolta MD | eBay
For Sale: Legendary Tokina AT-X 90mm Macro F2.5 "Bokina"
Tokina AT-X Macro 90 f2.5 Review on Sony A7s and a6000 - The Weekend Lens - Photography || Vintage Lens Reviews || Sony E-mount
Lenses - **Legendary Bokina Lens** Tamron SP 90mm F2.5 Macro Lens in Nikon AIS Mount **Good Condition** was sold for R1,650.00 on 29 Jul at 21:16 by Red October in Cape Town (ID:295111522)
For Sale - Sold Vivitar Series 1 90mm f2.5 macro ("Bokina") for Pentax K - PentaxForums.com
The Online Photographer: The 'Bokina'
X-T10 & Vivitar Series 1 90mm f/2.5 VMC 1:2 macro "Bokina": Fujifilm X System / SLR Talk Forum: Digital Photography Review
Vivitar Series 1 90mm 2.5 Bokina - review
Vivitar Series 1 90/2.5 macro "Bokina"
Tokina 90/2.5 bokina macro 1:1 adapter: Sony Alpha / NEX E-mount (APS-C) Talk Forum: Digital Photography Review