Depth of field calculator

End picture size and required pixel size
Seeing capabilities angle	Watching distance mm	Smallest detail needed mm
Width mm	Heigth mm	Aspect Ratio mm
Required width pixels	Required heigth pixels	Required dpi
Film plane parameters
Width mm	Heigth mm	Circle of confusion
Lens settings
Focal length mm 24 28 35 50 85 100 135 200 300 400 500	Focus distance m	Aperture 1.4 2 2.8 4 5.6 8 11 16 22 32
Object size m x m
Depth of field
Distance near sharp m	Distance far sharp m	Hyperfocal distance m
	Help text (press next to field to get the help text here)

Car audio links (Link to parent category)

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Audison
Xetec
SPL Dynamics
AutoSound Technical Magazine
JL Audio
Hifistudio 17
KS Illusions
CDT Audio
Augustin imports
Diamond Audio
Harman International, Finland
JBL
Infinity
Hertz (South Africa dealer pages since manufacturer has years old info..)