What is the difference between DFOV, HFOV, and VFOV in the specifications for the Wyze Cam OG ? Under what conditions do they occur ? Are they selectable ?
Measurements of object planes in degrees.
DFOV = Display (diagonal) Field of View
HFOV = Horizontal Field of View
VFOV = Vertical Field of View
Wyze cams have fixed-length lenses. Field of view is constant and not selectable. The FOV values are listed as comparative values for you to best determine cam type purchase based on where/how your cam will be located in relation to what you wish to see/cover. I’ll try to find the comparison chart for you…
Edit: Field of View in this table is HFOV. Most cam users are concerned about amount of horizontal (left/right) coverage, hence only HFOV is listed in table. Note significant HFOV difference between OG and OG Telephoto:
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You said the table is HFOV, however elsewhere on the Wyze site it uses DFOV as the default, not HFOV, e.g.:
Table: Wyze OG 121.4°
Wyze site: 121.4°(DFOV), 102.3°(HFOV), 54.1°(VFOV)
What’s more if you do the math, sqr root of (side squared + side squared)= hypotenuse (the diagonal) you get: (102.3^2+54.1^2)^.5=115.72, not 121.4. I’m guessing this is due to the wide-angle lens distortion.