Kodak Retina Reflex - Apertures with Clear Flash Bulbs (80-100 Asa Films; Apertures with Blue Flash Bulbs; Factors with Retina Reflex Filters

Landscapes 11 22 ft. 10 ft. - inf -- -- *50 ft. 25 ft. - inf
*The original Retina reflex has a black circle near these distances to indicate useful focusing zones.
APERTURES WITH CLEAR FLASH BULBS (80-100 ASA FILMS
(For 100 ASA Film)
Distance
G.E.,
Mazda,
G.E.C. No. 1
Philips:
PF 1
AG1
Mazda,
G.E.,
G.E.C.:
No. 5
Philips:
PF 5
Sylvania:
Press 25
Philips:
PF38
Sylvania:
Press 40
G.E.:
No. 11
Philips:
PF 60
G.E.:
No. 22
Sylvania:
No. 2
6ft.(2m.) 16------
8 ft (2.5m.) 12.5 -- -- --
10 ft (3m.) 10 16 -- --
12 ft. (3.6m.) 8 16 16 --
15 ft. (4.5m.) 6.3 11 12.5 16
20 ft. (6m.) 4.5 8 10 12.5
25 ft. (7.5m.) 4 6.3 8 11
30 ft. (9m.) 3.5 5.6 6.3 9
In bright rooms (kitchen, bathroom) or with films faster than 100 ASA use next
smaller aperture. In very large rooms, at night outdoors or with 40-64 ASA films
use next larger aperture.
The Focal Flash Chart gives exposure for all types of flash as well as for flash
combined with daylight. It further contains a list of all flash bulbs with their use
and performance, also information on "colour and flash" and much additional flash
data.
APERTURES WITH BLUE FLASH BULBS
(For 10-12 ASA Daylight Type Colour Film)
Distance
PF 1/B
No. 1B
AG 1B
PF 60/97
No. 22B
3½ ft. (1m.) f8--
5ft.(1.5m.) f5.6 f16
7ft.(2.2m.) f4 f11
10 ft. (3m.) f2.8 f8
For 40-50 ASA films use two stops smaller (e.g., f16 instead of f8).
FACTORS WITH RETINA REFLEX FILTERS
Filter
Filter
Code
Factor
On Retina Reflex
reduce exposure
value setting by
Light Yellow F I 1½ ½
Medium yellow F II 2 1
Yellow green F III 2 1
Orange F IV 3 1½
Red F V 7 3 (2¾)
Blue F VI 2½ 1½ (1¼)
Ultra-violet -- -- --
Polarizing Filter -- 2½ 1½ (1¼)