Nikon N90 AF User Manual

TO MAKE NIGHT BACKGROUND MORE VISIBLE-SLOW SYNC OPERATION
When fiash pictures are taken at high shutter speeds in dim
light, the background may come out dark. To improve
background exposure, use Slow Sync to extend the
automatically controlled shutter speed range down to 30 sec.
Without Slow Sync, the automatically controlled shutter speed
is controlled between 1/250 sec. and 1/ 60 sec. or 1/(focal
length) sec. When flash pictures are taken with this rather
narrow shutter speed range
in dim light, the subject will appear
bright and well exposed, but the background may come out
very dark, almost black. Setting Slow Sync extends the
automatic controlled shutter speed range down to 30 sec.,
enabling background details to come out.
120
Slow Sync
Normal Sync

Nikon N90 AF Specifications

General

Lens Mount	Nikon F mount
Film Format	35mm
Flash Sync Speed	1/250 sec
Exposure Metering	Matrix, Center-weighted, Spot
Film Rewind	Automatic
Focusing System	TTL phase detection autofocus
Exposure Modes	Program, Shutter Priority, Aperture Priority, Manual
Shutter Speed	30 to 1/4000 sec, Bulb
Viewfinder	Fixed eye-level pentaprism
Film Advance	Automatic
Power	4 AA batteries
Type	35mm autofocus SLR