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Should I Use a 2.8mm or 4.0mm Lens? | XLR Security
Which Lens Should I Select
What's the difference between 2.8mm & 3.6mm lenses?
Amazon.com : 2MP Outdoor IR Fixed Bullet IP Camera. 2.8mm/4mm Lens. Compatible with Hikvision with DS-2CD2023G0-I (4mm) : Electronics
Which Lens Should I Select
