I have several Isolettes and a Jsolette (pre wwII).
Shooting with them is fun. You judge the lighting and focus yourself and manually enter the settings you want. No automatic mode.
I use the following sunny 16 table for my exposures.
| Sunny 16 | |||||
| Isolette 1 | 1/500 | √ | |||
| Isolette 2 | 1/200 | √ | |||
| ISO 400 | ISO 100 | ||||
| sand/snow/slight haze/hard shadows | 16 | ||||
| full sun/hard shadows | 15 | 1/400@f16 | 1/100@f16 | ||
| Full sun/soft shadows | 14 | ||||
| cloudy, bright, no shadows | 13 | ||||
| heavy overcast/open shade bright day | 12 | ||||
| just after sunset | 11 | ||||
| artificial light at night/ excessively bright | 10 | ||||
| night sports stadium | 9 | ||||
| bright street night | 8 | ||||
| normal night street | 7 | ||||
| interiours | 6 | ||||
| home interior | 5 | ||||
| decorative light | 4 |
I use the following hyperfocal table, based on 0.049mm COC
| Hyperfocal | |
| Feet | |
| f4.5 | 108 |
| f5.6 | 87 |
| f8 | 61 |
| f11 | 44 |
| f16 | 31 |
| f22 | 22 |