Difference between 'M'' mode,P,Tv and Av.

Let say I set ISO 400, 1/60 and f4.0 on Manual mode. What is the different if I the same setting is used in P,Tv and Av?

In tv and Av mode you set only one, either the shutter speed or the aperture. In av mode the camera selects the shutter speed to match your f/stop for what it thinks is the best exposure. also in the tv mode the camera sets your f/stop while you set the shutter speed.
In manual, for better or worse, you have complete control.

Yea. what he said. In manual you set everything yourself. In the other two think of it like all the angles of a triangle adding up to 180 degrees. In this case, all the aspects of exposure (Aperture, shutter speed, ISO) add up to the exposure you choose. The camera fills in the blanks with the info you give it.

AV = Aperture prior. you set aperture (and ISO and Exposure) and camera picks shutter speed to match.

TV= Shutter Prior. you set shutter (and ISO and Exposure) etc etc.

In P you set the exposure and ISO as the priority and the camera makes the rest of the decisions.

To clarify my question.

i)In P the setting read at 1/60 f4
ii)In Tv the setting read at 1/60 f4
iii) In Av the setting read at 1/60 f4
iv) M the setting set at 1/60 f4

Does these setting would yield a different result?

No, if all else is the same. They have the same results

No they wont yield different results. As long as all the exposure settings are the same (ISO, Exposure Meter, Aperture, Shutter Speed).

All of those modes will pick or let you pick the settings to achieve what the exposure meter says for any given shot. So if its the same shot all the modes will read out the same settings.

thanks for you all informations. But would this situation still apply for flash photography and manual focus selection?

Hmm. not sure about how flash works with the different modes. I dont have an external flash and I never use the built in one. Have to find that out from some other chap.

danielyamseng wrote in post #4305742
thanks for you all informations. But would this situation still apply for flash photography and manual focus selection?

If flash is used with TV or AV it becomes a fill light. In other words your camera will set the exposure for the ambient light and the flash will fill in.

It should be the same if you use the automatic setting on your light and you are using a canon speedlite. The speedlite I have auto sets to the camera settings. If you manually set it, then the settings would have to match.

no wonder when I turn on the flash the Tv and Av setting doesn't change as if it doesn't detect a flash on it.

Each mode is just a different means to the same end. Except in the case of Green Box Auto. It's more like an end to the means.

f/4, ISO100, 1/500th is the same in all modes.

The camera doesn't change setting to suit the flash. The flash, if it is in auto will adjust to the camera settings. If it is in manual mode, it flashes as you instruct it. If your settings are wrong then the photo is exposed incorrectly.

smurffman wrote in post #4305792
It should be the same if you use the automatic setting on your light and you are using a canon speedlite. The speedlite I have auto sets to the camera settings. If you manually set it, then the settings would have to match.

Nope, see the post above. In M mode the shutter speed and aperture won't change and the flash will act as the primary light source (though you can balance flash and ambient by varying the shutter speed).

In Tv and Av mode, the exposure (aperture or shutter speed) will be set based on the ambient lighting and the flash will act as fill.

In P mode the flash is the primary light source.

In all cases the exposure is biased toward the active AF point, though with E-TTL II and advance Speedlights this is somewhat mitigated if the lens reports focus distance to the camera.

Mark

'coze I notice that if the flash is on in P mode it'll change to 1/60 f4 for the slowest speed. But that doesn't do for Tv and Av