50D break operating (self shooting, long exposure)

1. Suppose I set a 30 seconds shots, but one moment after the shutter I want to change something. Is it possible to stop the exposure, or I had to wait untill it ends?
2. About the same for self shooting countdown (self timer). Sometimes I forget my camera setted in selftimer drive mode, (down right in the following dpreview picture)
   
   
   
   Can I stop the count down?
3. Flash. Fill in or full flash exposure. I can't understand how to set fill in mode (shutter speed and aperture setted for background) or full flash exposure (only flash light visible) in various programs. Since now I use manual mode and make my settings, this works but i'd like to know someting faster using at least P, Av, Or Tv modes.
   
   
4. Image quality. Wich is the faster way to switch beetween Jpeg Large Fine and Raw. I don't use other image settings, I am just interested in this two!

mondopinguino said:

Shure, this is a simple way to stop each operation! Switch off and on, Thats'all!!

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loafer said:

1. You must turn the camera off - there is no other way to interrupt a long exposure. (But I could be wrong)

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loafer said:

2. Press the AF/Drive button to cancel the countdown timer

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loafer said:

3. The Tv and Av modes are always "fill in flash". The P mode is always "full flash".

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loafer said:

4. You could set one of the functions of the My Menu settings to "Quality". But that is not much of a short cut since "Quality" is already on one of the menus. Maybe someone has a better way to do that!

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sparkey2 said:

Why are you answering your own question???? Did a post get deleted??

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tko said:

The 7d has a built in feature that switches between any RAW mode and any JPEG mode with the press of a button.

See pages 61 and 195 of the manual.

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sparkey2 said:

He has the 50D and since he says he is a "new DSLR user" I doubt he is going to do a upgrade anytime soon.

tko said:

The 7d has a built in feature that switches between any RAW mode and any JPEG mode with the press of a button.

See pages 61 and 195 of the manual.

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mondopinguino said:

Another question. If I have accidentallt pressed explosure lock, how can I have a regular shot? Thank you!

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Karl Gnter Wnsch said:

Press any of the top buttons to change ISO, AF, metering mode - this cancels exposure lock...
regards
Karl Günter Wünsch

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mondopinguino said:

mondopinguino said:

3. The Tv and Av modes are always "fill in flash". The P mode is always "full flash".

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Ok, I'll try!

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Alastair Norcross said:

There is a setting to force shutter speeds between 1/60 and 1/250 in AV mode with flash. If you want to shoot flash in AV mode without it necessarily being fill flash, you could do that. It will be fill flash, if your aperture and ISO would have given shutter speeds between 1/60 and 1/250.

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mondopinguino said:

I've just find that I can assign quality screen to set button in shooting mode (via CF IV-3)! This seems to me the fastest way!! If I would I can use also the func button!

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mondopinguino said:

I’ve found more operating tips, not seen in the user manual:

High speed sync with canon 50D and a Speedlite 580EXII doesn’t works over 1/300sec with a 10 meters PC-sync cable, neither works over 1/400sec with a 20cm PC-sync cable. PC-syncing doesn’t fire when live view is engaged.
Bye, Roberto

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