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ISO 1230:1992 PDF
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Photography — Determination of flash guide numbers
Specifies a method for measuring the reflector factor. Contains formulae for calculating the ISO guide number for flash lamps (with and without integral factors resp.). Gives terms and definitions.
| Edition | 1992 |
|---|---|
| Published Date | 1992 |
| Published By | International Standardization Organisation |
| Page Count | 5 |
