Focal length 35mm equivalent, but not F-stop?

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Chikoo
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Focal length 35mm equivalent, but not F-stop?
5 months ago

All camera manufacturer when they publish technical specification of their camera lens publish the focal length and it's equivalent in 35mm. But the same is not done for F-stop. Why?

Example:

Pentax MX-1

A 4X optical zoom (28-112mm in 35mm format) at f1.8-2.5 for outstanding depth of field control and beautiful bokeh.

Sony DT 18-135

Focal Length (35mm equivalent) : APS: 27-202.5 mm (35mm Equivalent: 18-135mm)

  • Aperture (Max.) : f/3.5 - 5.6
  • Aperture (Min.) : f/22 - 36
Pentax MX-1
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