How read from script ,values from "Miscellaneous values" menu

blackhole

806
A590IS 101b

How read from script ,values from "Miscellaneous values" menu

« on: 12 / March / 2014, 05:20:25 »

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How read from script ,values from "Miscellaneous values" menu?
I need the value measured Ev (Bv + Sv) and B Scene luminance (cd/m2)

Thanks in advance, whatever the answer was.

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msl

1274
A720 IS, SX220 HS 1.01a

Re: How read from script ,values from "Miscellaneous values" menu

« Reply #1 on: 12 / March / 2014, 06:33:22 »

=> http://chdk.wikia.com/wiki/CHDK_Scripting_Cross_Reference_Page

Go to the 'Exposure Functions'. There are all relevant script functions listed that are available. You need 'get_sv96' and 'get_bv96' for your calculation.

msl

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blackhole

806
A590IS 101b

Re: How read from script ,values from "Miscellaneous values" menu

« Reply #2 on: 12 / March / 2014, 12:15:54 »

Thanks msl !

I made a script and the value of Evm is always different than the value shown in the 'Miscellaneous values'.
'Miscellaneous values' shows the value of Evm 2:07 and my script returns the value 199, which should be 1.99.
Why this difference occurs?

Code: [Select]

--[[
@title test
--]]

press("shoot_half")
sleep(1000)
x=get_sv96 ()
y=get_bv96 ()
e=x+y
print("Evm", e)
release("shoot_half")

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srsa_4c

4318

Re: How read from script ,values from "Miscellaneous values" menu

« Reply #3 on: 12 / March / 2014, 13:04:42 »

Quote from: blackhole on 12 / March / 2014, 12:15:54

I made a script and the value of Evm is always different than the value shown in the 'Miscellaneous values'.
'Miscellaneous values' shows the value of Evm 2:07 and my script returns the value 199, which should be 1.99.
Why this difference occurs?

You're using script functions that return their value in APEX96 units. 199/96=2.07

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