EVRANGEOFTHECAMERA--------------------
How to read the EV chart
• Full-aperture metering
Example: Lens maximum aperture fll.4
ASA film speed 100 Working aperture fl5.6
By referring to the fll.4 column in Section A and the EV values indicated for ASA 100 in Section D, you will find that the EV range for an fll.4 lens at ASA 100 is I to 18. Now, refer to Section B and single out the fl5.6 indication for ASA 100 . Go diagonally down until the protruding line intersects with Section C's vertical line for the shutter speed of 8 sec. (the F3's slowest shutter speed). From this point of intersection, follow the horizontal line that leads to Section D's EV value for ASA 100, and you will obtain an EV value of 2 . Start again from the fl5.6 indication for ASA 100 in Section B, and go down diagonally until the protruding line intersects with Section C's vertical line for the shutter speed of 112000 sec. (the F3's fastest shutter speed) this time. Then follow the horizontal line that leads to Section D's EV value for ASA 100, and you will get a reading of EV 16. This means that an flstop of fl5.6 at ASA 100 and a shutter speed of from 8 to 112000 sec. has an effective EV range of 2 to 16, which is well within the F3's metering range of EV I to EV 18. The area encompassed by the heavy lines in Section C demonstrates a metering range for full aperture method using an fll.4 lens and ASA 100 film.
• Stop-down metering
Example: ASA film speed 100
The procedure is the same. The fl8 column in Section A and the EV values indicated for ASA 100 in Section D will show you that the EV range for fl8 is 6 to 23. Refer now to Section B and single out fl8 at ASA 100. Go diagonally down until the protruding line intersects with Section C's vertical line for the shutter speed of 8 sec. From this point of intersection, follow the horizontal line that leads to Section D's EV value for ASA 100, and you will obtain an EV reading of 3. This means that an flstop of fl8 at ASA 100 and a shutter speed of 8 sec. give an EV value outside the metering range. To find out the slowest shutter speed usable, follow the fl8 indication for ASA 100 in Section B 33 diagonally down until it intersects the horizontal line in Section C that leads to Section D's EV value of 6 for ASA 100, and you will find that the slowest shutter speed usable is I sec. In other words, at fl8 and ASA 100, the available shutter speed range that is within the metering range is from I to 112000 sec., which has an effective EV range of 6 to 17 {indicated by the broken line in Section
In practice, you will find that it is generally the high end and the low end which require a careful check. The EV range of the Nikon F3 encompasses most lighting situ- ations, and it is only under
