-2/3 question

HaroldC3 wrote in post #5912789
1. Yes, hold down the +/- button and move it but not to 2, only 2 notches to the left (so just before the 1).

So Do I do this before I plan to shoot something green, Then meter the subject ?

I use manual 90% of the time How do you take the beep sound off ? I didnt know you could do this with your camera it doesn't bug me at all just want to know how to turn off and on .

I will look at info on picture and see if i can see the highlights blinking

Regarding question 2. when reviewing the image, press the "info" button to toggle the available information: none, simple INFO , full INFO (with histogram). In the full INFO view, overexposed areas will blink.

This is covered on pages 103 and 104 of your 20D manual.

kerrysroxy wrote in post #5915336
So Do I do this before I plan to shoot something green, Then meter the subject ?

You would point it at something green then either adjust the exposure manually to indicate a -2/3 exposure

OR

if using Av/Tv dial in -2/3 exposure compensation, then while pointing at something green use the exposure lock.

e-k

Just a note about blinkies: Areas can be overexposed in one channel but not the others, and the screen won't blink. You'll still be losing information, though, so it's best to use a three color histogram and check manually to see if you're overexposing one or more channels.

Jbs wrote in post #5912928
i always shoot -2/3 stops. its a lot easier to bring a photo back up than it is to try to get back details lost in highlights.

Thats about the dumbest thing I have ever heard. I imagine your photos have alot of noise.

Expose to the right as far as possible without blowing out important highlights.

20droger wrote in post #5915362
Regarding question 2. when reviewing the image, press the "info" button to toggle the available information: none, simple INFO , full INFO (with histogram). In the full INFO view, overexposed areas will blink.

This is covered on pages 103 and 104 of your 20D manual.

I bought my camera use I do not have manual ......

hughps wrote in post #5915854
Just a note about blinkies: Areas can be overexposed in one channel but not the others, and the screen won't blink. You'll still be losing information, though, so it's best to use a three color histogram and check manually to see if you're overexposing one or more channels.

Channels ?

Ok I will play with camera some more and if I have more questions I will post So far I think I am getting to much info at once I need to try some stuff with my camera I am a more visiual person

kerrysroxy wrote in post #5916838
I bought my camera use I do not have manual ......

Click to download: EOS20DIM-EN.pdf

hughps wrote in post #5915854
Just a note about blinkies: Areas can be overexposed in one channel but not the others, and the screen won't blink. You'll still be losing information, though, so it's best to use a three color histogram and check manually to see if you're overexposing one or more channels.

The 20D does not have a 3 channel color histogram though.

kerrysroxy wrote in post #5915350
I use manual 90% of the time How do you take the beep sound off ? I didnt know you could do this with your camera it doesn't bug me at all just want to know how to turn off and on .

I will look at info on picture and see if i can see the highlights blinking

With my XTi, to turn the beep off it's very simple- hit menu and "beep on/off". I turned it off during a wedding (the only time I've ever turned it off). It should be very similar with the 20D.

I would like to make a couple points...

Setting your exposure -2/3 or whatever to get "greener greens" is simply underexposing. Not a very good way to do it in my opinion. Maybe add a filter of some sort to the lens - or more practically - edit in post processing. It's easy to get te same effect as "-2/3 exposure" in Photoshop or most other programs.

There are 3 channels- RGB- or Red Green Blue. Some camera histograms show only brightness (all channels combined into one exposure reading) and some can also show RGB (3 seperate graphs for each color). I just have mine set to brightness cause it's easier to read.

"Blinkies" mean part of the image is overexposed (you probably already know this). If you were taking a picture of a back-lit flower you could have the flower exposed properly but the background will be blinking because it's the SUN in the sky. That is okay. If someones face is blinking, that is not good.

Maybe someone can chime in with a good link on reading histograms? They are nice to use but you should only use them as a general guide, not expect a perfect image because it looks good on the graph.

Understanding Histograms

http://www.cambridgein​colour.com/tutorials/h​istograms1.htm

http://www.cambridgein​colour.com/tutorials/h​istograms2.htm

DStanic wrote in post #5917573
Setting your exposure -2/3 or whatever to get "greener greens" is simply underexposing. Not a very good way to do it in my opinion. Maybe add a filter of some sort to the lens - or more practically - edit in post processing. It's easy to get te same effect as "-2/3 exposure" in Photoshop or most other programs.

The -2/3 is not to get "greener greens". It's basically saying that your "average natural green" is about 2/3 stops darker than the gray your camera's meter is based on. You need to apply -2/3 stops EC to get the "correct" exposure when metering off a green object in your scene.

e-k