10 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Sunrise, sunset, solar noon, day length and civil, nautical and astronomical twilight for coordinates and a date, in local time (zone detected from coordinates). Local astronomical calculation; handles polar night and mi...
Near/far focus limits, total depth, hyperfocal, magnification and background blur size
Hyperfocal distance, near limit, aperture/foreground table and focus distance for a foreground
Horizontal/vertical/diagonal FOV, equivalent focal length, coverage at distance and focal length to frame a subject
EV, all equivalent aperture/shutter pairs, ISO and ND adjustments, Sunny 16 and scene brightness
NPF-rule maximum exposure, 500-rule comparison, trailing in pixels and stacking plan
Max print sizes at 100-300 ppi, resulting ppi, paper crops and viewing distance
GB per hour, cards needed, write-speed requirement, backup and offload time for a shoot
ND stops needed for a target shutter, conversions between ND factor, density and stops, 180-degree rule
Axial modes, Schroeder frequency, RT60, ratio check, speaker placement and treatment needed