The guide number at various film speeds and zoom head settings is shown in the following table:
Guide numbers in the manual mode |
| Unit'm(tt) | ||||
Zoom head |
|
| ASAIISO film speed |
|
| |
setting | 800 | 400 | 200 | 100 | 50 | 25 |
|
T119(390) 84 (276) 59 (194) 42 (138) 30(98) 21 (69)
S107 (351) 76 (250) 54 (177) 38 (125) 27 (89) 19 (62)
N90 (295) 64 (210) 45 (148) 32 (105) 22 (72) 16 (52)
W, '76 (250) 54 (177) 38 (125) 27 (89) 19 (62) 13 (43)
W,' 54 (177l 38 (125) 27(89) 19(62) 13 (43) 9.5 (31)
*W, is used when the
For motor drive (MD) operation
After setting the ASA/ISO film speed and zoom setting knob on the exposure calculator dial, focus on the sub- ject ; then look at the lens and read off the focu sed dis- tance to determine exactly how far away the subject actually is.
31