Metering

[MattC]

I finally decided to post this:

GONE FOR NOW

Beware, it is still a work in progress and I am still a little unsure that it will stay in its current form. Some areas are still incomplete and I am no literary genius.
It primary goal was to explain the very basics of achieving correct exposure, based on tone and EV in a digital enviornment. It grew from there and goes a little off topic.

Comments are welcome.

Cheers

Matt


Edit: I stumbled across this page the other day and thought that I would add it as a little further reading.

[embi]

Just reading through it now....it's really helpful. I need to download the images and try them with the curves.

Thanks for the info

[shakey]

Great start..
Are all the images in the public domain? One of them looks like the one which came with my monitor calibration software.
And the "easy to spot error", has it anything to do with Nos 20 and 21 on the colour chart?

shakey

[MattC]

Shakey,

You are right about No21. If No 20 is wrong, I did not spot that.

The test image is copyright to PDI. It was an image that came with my Spyder. I used that image for convenience. If you download the images, it comes with the licence. It is freeware, and distributing the image appears okay as long as the licence is distributed with it. I forgot to note that in the doc and attach the licence at the bottom of the doc.
I created the grayscale in PS.
As I understand it, the MacBeth chart is in the public domain.


Cheers

Matt

[embi]

I spotted that No 21 was wrong too

[MattC]

That is okay. 20 is okay, it is stuck between +1 and +1 1/3. No 21 should read +1/2.

If the error is being spotted easily then there is at least a small degree of evidence that the document is being understood. I will not be correcting it unless I actually replace that particular image.

I am in the process of updating that doc right now to include the licence for that last image.

Cheers

Matt

[ajax]

matt,

very informative. Coud not be explained any simpler than that.

thanks.

cheers,
ajax

[Alex]

Matt,

Thanks for the interesting and an easy to understand read.

Cheers
Alex

[waspo]

Wow!! This is great for a newbie like me. Thanks Matt!