Pentax LX Quick Help/Reference Manual page 15

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Dist. scale

1.55'

f/1.4

1.540'

~ 1.560'

f/2

1.536'

~ 1.564'

f/2.8

1.531'

~ 1.570'

f/4

1.523'

~ 1.573'

f/5.6

1.512'

~ 1.590'

f/8

1.497'

~ 1.608'

f/11

1.478'

~ 1.631'

f/16

1.447'

~ 1.670'

f/22

1.413'

~ 1.721'

"DEDICATED" AUTOMATIC FLASH UNITS

Quick Reference Guide

TTL Measurement

AF-400T

AF-280T

AF-200S

- - -

AF-160

- - -

OTHER FLASH UNITS

1.9'

2.5'

1.884'

2.471'

~ 1.916'

~ 2.530'

1.878'

2.459'

~ 1.923'

~ 2.543'

1.869'

2.443'

~ 1.932'

~ 2.560'

1.856'

2.419'

~ 1.946'

~ 2.587'

1.839'

2.388'

~ 1.965'

~ 2.624'

1.815'

2.343'

~ 1.995'

~ 2.681'

1.785'

2.290'

~ 2.033'

~ 2.756'

2.101'

2.206'

~ 1.737'

~ 2.892'

1.684'

2.114'

~ 2.188'

~ 3.075'

Visible check

- - -

2.957'

5.814'

~ 3.045'

~ 6.198'

2.939'

5.738'

~ 3.064'

~ 6.287'

2.915'

5.640'

~ 3.091'

~ 6.410'

2.880'

5.499'

~ 3.131'

~ 6.604'

2.835'

5.322'

~ 3.187'

~ 6.882'

2.769'

5.078'

~ 3.275'

~ 7.347'

2.692'

4.802'

~ 3.393'

~ 8.027'

2.573'

4.406'

~ 3.609'

~ 9.500'

2.445'

4.012'

~ 3.911'

~ 12.205'

The Pentax AF-200S and AF-160 Automatic Electronic Flash Units are fully compatible

with the LX camera's automatic shutter speed flash synchronization and viewfinder flash

ready light features. When the flash unit is turned "ON" with the camera's shutter dial set at

"Automatic" and the flash unit set for auto flash operation, the shutter automatically

synchronizes at "X" (1/75th second) and the "X" indicator inside the viewfinder glows

when the flash unit reaches full charge

NOTE: Dedicated flash is also offered with the above two units with the shutter dial set to

"X." The AF-200S also features flash exposure override. When the viewfinder indication

for the camera's metering system is between 1/30th second and 4 seconds (occasionally

1/60th second, due to stepless metering) flash synchronization is automatically obtained;

when faster speeds are indicated, however, non-flash exposure system overrides flash,

preventing overexposure. (This feature is not offered with the AF-1 60).

Visible Ready

Auto FIash Synch

12'

7.667'

11.252'

~ 8.364'

~ 12.856'

~ 29.122'

7.533'

10.960'

~ 8.530'

~ 13.262'

~ 31.339'

7.361'

10.593'

~ 8.763'

~ 13.845'

~ 34.884'

7.118'

10.087'

~ 9.137'

~ 14.824'

~ 42.020'

6.818'

9.485'

~ 9.690'

~ 16.370'

~ 57.817'

6.414'

8.706'

~ 10.660'

~ 19.414'

~ 132.990'

5.973'

7.898'

~ 12.190'

~ 25.319'

5.361'

6.845'

~ 16.047'

~ 51.597'

4.778'

5.906'

~ 25.969'

~ i

25'

21.905'

173.686'

~ i

20.802'

121.623'

~ i

19.495'

86.915'

~ i

17.817'

60.884'

~ i

15.986'

43.530'

~ i

13.855'

30.514'

~ i

11.882'

22.231'

~ i

9.611'

15.329'

~ i

7.827'

11.188'

~ i

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