New Patents: Tamron 300mm F/2.8, 400mm F/4 and 500mm F/4


Tamron has filed three new patents for Tamron 300mm F/2.8 Lens, 400mm F/4 Lens, 500mm F/4 Lens, which are designed for a 35mm full-frame sensor. Take a look at the patent details below:

Specifications and lens arrangements

Embodiment 1: 300mm F2.8
Focal length: 304.799 mm
F No.: 2.8
ω: 3.997
Image height: 21.64 mm
Back focus: 70.1919 mm
Lens length: 298.38 mm


Embodiment 2: 400mm F4
Focal length: 396.296 mm
F No.: 4.0
ω: 2.963
Image height: 21.64 mm
Back focus: 102.3549 mm
Lens length: 332.36 mm

Embodiment 3: 500mm F4
Focal length: 485.045 mm
F No.: 4.001
ω: 2.530
Image height: 21.64 mm
Back focus: 125.2621 mm
Lens length: 420.001 mm

Via: hi-lows-note

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