https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
Seiko Star TLV4512MF16IRMP Surveillance Lens

Seiko Star TLV4512MF16IRMP Surveillance Lens

Seiko Star/
Region: China
Update: 05/04/2011
Key Specifications
Features: 
● Image format cover: 12" 
● Focal length: 4.5 to 12mm 
● Back focal length: 12.86 to 21.19mm 
● Iris range: F1.6-C 
● Minimum object distance: 0.3m
https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions