| Feature | N90s
| F4s |
|
| Matrix metering segments | 8 | 5 |
| 3D matrix metering (with D lenses that give distance) | yes | no |
| Matrix and center-weighted meter EV range |
-1 : 21 | 0 : 21 |
| Spot meter EV range | 3 : 21 | 2 : 21 |
| Mercury switch that detects horizontal or vertical camera position
used to change matrix metering from horizontal to vertical pattern |
no | yes |
| Matrix metering works with AI lenses | no
| yes |
| Center-weighted metering pattern | 75/25
| 60/40 |
| 5 segment TTL off the film "matrix-like" flash meter | yes | no |
| Center-weighted TTL off the film flash meter | no | yes |
| Autofocus module | AMD246 | AMD200 |
| Number of pixels in autofocus CCD | 246
| 200 |
| Cross-type autofocus (can autofocus on objects with either
horizontal or vertical details) | yes | no |
| Horizontal autofocus module (has trouble with objects that only
have vertical details) | no |
yes |
| Wide area autofocus option (in addition to spot AF) | yes | no |
| Autofocus speed | faster | fast |
| Focus tracking - max frames per second | 4.1
| 3.4 |
| FP High-speed flash sync (1/250 to 1/4000) |
yes | no |
| Slow flash sync (below 1/60) | yes | no |
| Red-eye reduction | yes | no |
| 3D multi-sensor balanced fill flash (SB-25 or SB-26) | yes | no |
| Monitor pre-flash (part of prior feature) |
yes | no |
| With SB-26, flash failure gives read out of exposure error (like
you were 2/3 ev under exposed) | yes | no |
| Flash bracketing (with databack/link) | yes
| no |
| Minimum manually settable shutter speed | 30
seconds | 4 secs |
| Exposure compensation range | +-5 ev |
+-2 ev |
| Can mount old F (non-AI) lenses (stopped down metering) | no | yes |
| Mirror lock-up | no |
yes |
| Make AF lock button lock exposure and AF both | databack/link | yes |
| 250 exposure back option | no | yes |
| Replaceable finder | no | yes |
| 6X full-frame high-magnification finder option | no | yes |
| Waist-level finder option | no | yes |
| Action finder option (arm's-length finder) |
no | yes |
| Optional back to leave leader out at end of rewind | no | yes |
| Multiple exposure | databack/link | yes |
| DX decoded ISO film speed displayed? (the F4s needs a databack or
SB-26 to display ISO) | yes |
no |
| Highest continuous frames per second (all systems "go") | 4.3 | 5.7 |
| Continuous "silent" mode (CS) about 1 frame per second | no | yes |
| Lithium batteries usable (official Nikon position) | yes | no |
| Rechargeable nicad cartridge battery option (MB-23 with MN-20 and
dedicated charger) | no | yes
|
| Number of optional replaceable focusing screens | 2 | 12 |
| Built-in diopter correction in finder (+1 to -3) | no | yes |
| Program-hi exposure mode | no | yes |
| Flexible program (allows you to control f-stop to shutter speed
relationship within programmed modes) | yes | no |
| Vari-program (7 variations on "programmed AE" mode) | yes | no |
| Computer interface (to Sharp Wizard) | yes
| no |
| Databack (MF-23 and MF-24) can print date/time, shutter speed,
aperture and exposure compensation values ***between*** frames (other
databacks can print various information, but only on your picture) |
no | yes |
| Manual rewind (as an alternative to power rewind) | no | yes |
| Variable self-timer | yes | no |
| Two-shot self-timer | yes | no |
| Vertical shutter release | optional(MB-10)
| yes |
| Viewfinder coverage | 92% | 100% |
| Shutter duty cycle | 50,000 | 200,000 |
| Rubber-armored | no |
yes |
| Weight | 26.6 oz |
45.1 oz |
| I'm worried that if I accidentally hit a table with my camera, I
might damage it (the camera) | yes | no |
| I'm worried that if I accidentally hit a table with my camera, I
might damage it (the table) | no | yes |
| I need to carry a heavy, blunt weapon with me to the crap out of
people, but the police have me that if I'm carrying a baseball bat, I had
damn well better be carrying a baseball glove and ball as well or they will
charge me with carrying a deadly weapon | no |
yes |