Shutter button sporadically won't trigger shot

[kaywalk]

I am new to my F80. There have been occasions when I have pressed on the shutter button but that did not trigger the camera to shoot. I was using the usual single-frame shooting mode. On those occasions, the f-stop and shutter speed when I half-press appear to be within the operational range of the camera.

Can I know if there are any circumstances in which this will occur as part of normal function, for example, camera cannot focus and therefore refuses to shoot or you can select an f-stop but actually camera cannot allow it to be used? Sorry for asking such basic questions, I'm still trying to understand the camera.

Otherwise, I can say that there is a problem with the camera? Thanks.

[espn]

Change batteries and try, make sure your glass aperture ring is at it's minimum and also make sure your AF is locked on before triggering.

[kaywalk]

Originally Posted by espn Change batteries and try, make sure your glass aperture ring is at it's minimum and also make sure your AF is locked on before triggering.

The batteries are quite new. Aperture ring is at its minimum. I actually have taken many shots already, just that in between, once in a while, it happens. AF was also locked before triggering, on those occasions. But since you mention it, does this mean that if AF cannot focus, I cannot trigger?

It doesn't really help to test one shot - it worked. I have to test a roll, since it is sporadic. I was using Aperture-priority mode.

Anyway, you seem to be saying that if I have done the above, something must be wrong for it to happen. I will use a new set of batteries and watch for it. Thanks!

[photogene]

Originally Posted by kaywalk But since you mention it, does this mean that if AF cannot focus, I cannot trigger?

Yes. It is likely that you move slightly after previous your successful shot and the AF has not aquire your subject, hence you cannot trigger. This is a common mistake made by many people. You can use AF-C, you'll be able to trigger everytime even though your subject is not in focus.

[kaywalk]

Originally Posted by photogene Yes. It is likely that you move slightly after previous your successful shot and the AF has not aquire your subject, hence you cannot trigger. This is a common mistake made by many people. You can use AF-C, you'll be able to trigger everytime even though your subject is not in focus.

Do you mean that I cannot trigger during AF "hunting time"? But the AF was not hunting during those times when I could not trigger. I had pressed halfway down to do AF, it stabilised, and then when I went fully down, I could not trigger. Is this possible for what you are describing?

[espn]

Originally Posted by kaywalk Do you mean that I cannot trigger during AF "hunting time"? But the AF was not hunting during those times when I could not trigger. I had pressed halfway down to do AF, it stabilised, and then when I went fully down, I could not trigger. Is this possible for what you are describing?

Did the focus lock when the AF stopped? The only time these happens to me is the battery has gone all weak and the focusing/VF display clears away very fast.