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Forum: Photographic Technique
04-12-2019, 05:33 AM
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F/1.6 is 1/3 of a stop smaller than f/1.4, so you're right, you probable wouldn't notice the difference. Or, give it one less click or one more click on the speedlight dial depending on whether you're closing or opening the aperture.
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Forum: Photographic Technique
04-10-2019, 04:28 PM
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You need to memorize the full aperture f stop sequence. It's not hard == 1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32. Each of these values is one stop difference. If your camera is set to 1/3 stop increments, you can simply set one f stop there and then count the clicks until you reach the one you want.
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Forum: Photographic Technique
04-10-2019, 12:08 PM
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Bruce, first off, your counting is wrong with regard to adjusting the main flash. You only lowered the flash's power output by two stops, not three. Also, you're using whole numbers for the flash output, when these numbers are actually fractions. When you say "8>32," you should be saying 1/8 power to 1/32 power. So when you adjusted the lens aperture 3 stops from f5.6 to f2, you should have reduced the flash power by three stops as well, and that is from 1/8 to 1/64 power (1/8 to 1/16 is one stop, 1/16 to 1/32 is another stop and 1/32 to 1/64 is the third stops).
Since your flash is set for adjustments in 1/3 stop increments, you merely would have had to count 9 clicks to lower the flash's output to compensate for opening the aperture by 3 stops.
Here again you're not adjusting the speedlight correctly. The correct value is 1/32 power.
Starting with the lens at f8 and the flash at 1/2 + 7 and then reducing flash output by 4.7 stops we get:
1/4 + 7/10 (1 stop down)
1/8 + 7/10 (2 stops down)
1/16 + 7/10 (3 stops down)
1/32 + 7/10 (4 stops down)
1/32 (4 and 7/10 stops down)
The easiest way to do this is simply to count the clicks. Three clicks for each full stop (3 x 4 = 12), plus 2 more clicks for the 7/10 stop for a total of 14 clicks on the speedlight dial/button.
Hope this helps.
---------- Post added 04-10-19 at 03:21 PM ----------
Yes, as I mentioned above, simply count off the corresponding number of clicks on the flash's dial. F8 to f4 is two stops, so lower the flash power by two stops, or six clicks since your flash's output is set to adjust in 1/3 stop increments.
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Forum: Photographic Technique
02-16-2019, 09:49 AM
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+1 on what BrianR said about "it's just a matter of counting the 'clicks'."
Just make sure the camera's aperture, shutter speed and ISO settings are all set to 1/3 stop increments. The same goes for the speedlight. Then, if you stop the lens aperture down 6 clicks (2 full stops), you simply increase the flash power by 6 clicks if using the flash's adjustment wheel in 1/3 stop increments. Alternative, one could increase the ISO by 6 clicks from say ISO 100 to ISO 400.
If you do it this way, you won't need to mess with charts or apps that will only slow down the process.
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