Panasonic G7: The A and S modes seem to be the same?

hindesite wrote:

windmillgolfer wrote:

hindesite wrote:

Brisn5757 wrote:

hindesite wrote:

Brisn5757 wrote:

I understood that if I set my camera to the A mode then the camera will auto set the shutter speed and I have not control over the shutter setting.
That does not seem to be the case as I can still adjust the shutter speed using the cameras top front control wheel while in the A mode. It seems the same when I get the camera to the S mode as I still can adjust either the aperture or the shutter speed using the cameras top dials.

Does the S or A mode have a purpose on the camera or can they just be grouped together as a A/S mode?

Brian

You seem to be struggling a bit with this camera.

Of course A and S are different modes, you are confusing cause and effect.

In a fixed light environment, when you change one, the other follows.

The way to demonstrate how they work is to fix your ISO, then select A, and watch the S value change when you move from a dark to light scene and vice versa.

The select S, and do the same, you will see A value adjust to maintain the correct exposure.

No I'm not struggling hindesite, I'm just not use to taking photos using other modes as most of the time I use the P mode.

Evidence points to the contrary, did you actually try the demo I suggested? You would have seen that one dial adjusts the setting only, while the other additionally causes the EV display to move from zero.

As the camera had two dials it seemed like one dial was for aperture and the other was for shutter speed

That is correct, when the camera is in use without the dial set switch on.

but I have since learn that both dials do the same thing so when you have the camera set to the Aperture mode then both dials adjust the aperture.

No, that is not correct. Again, you are confusing cause and effect. Look for the highlighted (yellow) aperture or shutter value in the display to see which one you have direct control over. In A ans S mode, the other dial adjusts EV, which of course changes the other values as you see, it is just not doing it directly.

see my earlier, first reply in this thread, you’ll see extracts from the Advanced Manual. You are wrong about default wheel settings. I was surprised too, my cameras are set to EV adjustment on the front and Aperture at the rear.

Yes, I saw that.

However, on the camera itself, the displays and what changes behave differently, they are not doing the same thing.

If I change the aperture dial in A mode, for example, the aperture setting is highlighted in yellow and changes with the dial; the EV setting stays constant (since the camera is automatically compensating exposure), as it should. If I use the other dial, the aperture does not change, the shutter speed does, as does the EV display. It is because you are changing the EV that the shutter changes, not the other way round.

Your cameras observed behaviour in A mode implies that the camera has been changed from the default and set to adjust Aperture with the rear wheel and EV compensation with the front.  This is how my G7 was configured, and my G80s are now configured, to give exactly that behaviour.

Try it yourself and look closely at what changes on the display.

I don't know if you have a G7 in front of you, but I do, and the camera does not behave as the manual indicates. I don't know if this is because the manual was always wrong, or if a firmware update changed things.

G9 behaves the same as the G7, too, despite the manual having the same description..

What is puzzling me, is that the way the manual describes the dial behaviour is the opposite to the OP's description (otherwise he would have seen that S and A modes were different - in S, you can only change S, and in A you can only change A - instead of thinking they are the same).