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)

Lenses links (Link to parent category)

Van Walree Photography - Optics (many good articles)
Canon TS-E lenses

Tilt and shift lenses (regarding all TS-E lenses)
TS-E 45/2.8 on the-digital-picrure.com
TS-E 24/3.5 on the-digital-picrure.com
TS-E 90/2.8 on the-digital-picrure.com
Sports with TS-E lenses by Vincent Laforet for the NY Times
Fred Miranda - how to correct CA when shift used
Cambridge in colour - Shift
Cambridge in colour - Tilt

Carl Zeiss lenses

digLloyd Zeiss ZF lenses
Zeiss.com - Carl Zeiss Distagon T* 35mm f/2.0
Zeiss.com - Carl Zeiss Makro-Planar T* 100mm f/2.0
16-9.net - Test of 28mm lenses including CZ 28/2.8
Pebble Place - Carl Zeiss Planar T* 2/100
Pebble Place - Carl Zeiss Macro-Sonnar T* 2.8/100 N
SLR Lens Review - Contax Sonnar T* 2.8/135mm C/Y
SLR Lens Review - Contax Sonnar T* 2.8/85mm C/Y
SLR Lens Review - Contax Planar T* 1.7/50mm C/Y
Pebble Place - Contax Sonnar T* 2.8/135mm C/Y
Some example pictures of Zeiss lenses
pinciuc.com - samples from various lenses

Nikon PC-Nikkor lenses

16-9.net - Test of 35mm shift lenses
mir.com.my - PC-Nikkor 28mm f/3.5
mir.com.my - PC-Nikkor 35mm f/2.8

Adapters

Pebble Place - C/Y adapters

Cambridge in colour - Understanding camera lenses
Photo.net - Lens tutorial