Looking for a conversion chart (of EV, Lux, shutter speed, ISO, aperture)

[Ashfaque]

Hello,

I am aware of Sekonic's EV/Lux/FootCandle Conversion Chart. But is there any (standardised) conversion chart of EV, Lux, shutter speed, ISO, aperture? How do I go about making such a conversion chart?

Bests,

Ashfaque

 

[Ian Grant]

Make yourself a spread sheet.

Here's the Gossen conversion on the back of my Profisix SBC

This ones for 50 ISO EV6 is 1 second @ f8

Ian

 

[Steve Smith]

Bear in mind that EV is not a measurement of light, it's a combination of shutter speed and aperture. It only represents a light measurement when the ISO value is included.


Steve.

 

[Ashfaque]

Ian and Steve: Thank you both very much. I will get back to you later.

 

[wiltw]

Bear in mind that EV is not a measurement of light, it's a combination of shutter speed and aperture. It only represents a light measurement when the ISO value is included.


Steve.

Yet if you look at the various equivalents at EV0:

• Sekonic at ISO 100: 250 lux, 0.23 foot-candles
• Gossen at ISO 50: 5.5 lux, 0.5 foot-candles
• Minolta at ISO 100: (lux not specified), 0.31 foot-candles

...I see no agreement in the above three equivalents!

 

[Sirius Glass]

Bear in mind that EV is not a measurement of light, it's a combination of shutter speed and aperture. It only represents a light measurement when the ISO value is included.


Steve.

From: http://en.wikipedia.org/wiki/Exposure_value

 

[chriscrawfordphoto]

Yet if you look at the various equivalents at EV0:

• Sekonic at ISO 100: 250 lux, 0.23 foot-candles
• Gossen at ISO 50: 5.5 lux, 0.5 foot-candles
• Minolta at ISO 100: (lux not specified), 0.31 foot-candles

...I see no agreement in the above three equivalents!

This represents differences in the calibration standards each manufacturer uses.

 

[Sirius Glass]

This represents differences in the calibration standards each manufacturer uses.

No they represent the sensitivity reading of each device for a particular ISO speed.

 

[macfred]

Exposure Value Chart
http://www.fredparker.com/ultexp1.htm#Light Intensity Chart


Exposure Factor Relationship Chart
http://www.fredparker.com/ultexp1.htm#EXPOSURE FACTOR RELATIONSHIP CHART B

 

[Ashfaque]

Thanks Fred.

 

[AgX]

Exposure Value Chart
http://www.fredparker.com/ultexp1.htm#Light Intensity Chart

Memorize (as not directly shown at chart):


EV 0 @ ISO 100, F 1, 1sec

 

[AgX]

This represents differences in the calibration standards each manufacturer uses.

The differences at lux seem to big for that.