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Digital Review:
# Nikon D90 Body is made of polycarbonate versus the Nikon D300 which is made of rugged magnesium alloy and features enhanced weather seal protection
# The Nikon D90 offers 12-bit image processing compared to the Nikon D300 which allows 12-bit or 14-bit to be selected.
# The D300 provides faster start up (0.13 sec) and minimal shutter lag (45ms) compared to the D90 (0.15 sec start up and 65ms shutter lag)
# D-Movie 720p HD video clip recording function is available on the D90 in Live View mode.
# The D300 offers phase-difference detection Auto Focus in "Tripod shooting mode" (not available on D90)
# Support for SD memory cards versus the D300 which supports CompactFlash memory cards
# The D90 incorporates a 420-pixel RGB sensor for metering compared to the Nikon D300 with a higher end 1,005-pixel RGB sensor. Leveraging the data provided by the1,005-pixel RGB Matrix Meter, the Scene Recognition System in the Nikon D300 provides more precise subject identification, optimizing autofocus, exposure and white balance detection.
# D300 offers both a CPU and AI exposure meter coupling to support metering with older type Nikkor lenses
# The Nikon D90 features 11 focus points versus the Nikon D300 with a broader AF coverage with 51 focus points
# The Nikon D300 uses a faster AF module (CAM 3500DX) and offers 15 cross type sensors, Fine AF adjustment is possible on the D300 to match the lens in use.
# Viewfinder frame coverage of approx.96% with the D90 compared to 100% coverage with the Nikon D300.
# The D90 offers Continuous shooting at approx. 4.5 fps versus approx. 6 fps with the D300. The D300 can shoot at up to 8fps with the optional MB-D10 vertical battery grip accessory.
# "Portrait" and "Landscape" Picture Controls have been added in the Nikon D90. With the D300 these two additions must be downloaded
# "Extra high" and "Auto" added to Active D-Lighting options on the D90. (D300: these two options are not available)
# "Distortion control", "Straighten", "Fisheye", "Filter effects" ("Cross screen"/"Red intensifier"/"Green intensifier"/"Blue intensifier"), "Small picture", "Quick retouch", "NEF (RAW) processing" available as in camera retouch functions (On the D300 these options not available)
# The Nikon D90 offers 72 thumbnail playback display, calendar display, and histogram for only the portion of the image displayed with playback zoom
# Advanced Scene Modes are offered on the D90 which are not available on the D300
# Shutter durability of 100,000 cycles on the Nikon D90 compared to the more durable shutter mechanism incorporated in the D300 which is rated up to 150,000 exposures
# Optional Nikon WT-4a wireless file transmitter accessory is available for the Nikon D300
# The D300 offers a greater degree of customization total of 48 custom settings
PS. Skillnaderna gäller D300, inte D300s. DS
