450D disabling exposure compensation in TV mode?

OK, just watching now.

With all this being said, and myself being in full agreement with the folks doing the explaining. It would be cool to have an active light meter in all modes.

Well, if the camera was working properly, your light meter would almost always mirror the EC meter, wouldn't it? It might flit a notch or two around your EC mark, but that should be it.

TeamSpeed wrote in post #17895398
Well, if the camera was working properly, your light meter would almost always mirror the EC meter, wouldn't it? It might flit a notch or two around your EC mark, but that should be it.

exactly. probably wouldn't be off at all in most cases.

The only time it would ever be off is when the camera butts up against the min/max shutter speed or min/max lens aperture.

True, good point, that could be useful, but I think the shutter (in TV) or aperture (in Av) flashes doesn't it? I can't remember now. I am obviously getting better with exposure, lol.

i think the aperture flashes in TV...not sure if the shutter speed flashes in AV though...

TeamSpeed wrote in post #17895444
True, good point, that could be useful, but I think the shutter (in TV) or aperture (in Av) flashes doesn't it?

yes it does.

I personally don't feel the feature is necessary. Not sure how Frodge would have it implemented but having an additional "meter" in the viewfinder would take up valuable real estate.

That could be, it would just get slower and slower until you hit 30s, or higher up to 1/4000 or 1/8000 depending on the camera, or whatever shutter speed limits you have set, again depending on model.

The "light meter" that's active when using Tv mode is the aperture value shown in the viewfinder. It reflects changes to the brightness level. In older cameras, like my first Canon from 1975 (The Canon EF seen in my avatar to the left here), all possible apertures were listed along a scale, and a needle moved along the scale to indicate which was to be used. Today it's a numeric display, but the idea is the same.

Cheers guys, I may have confused everyone by failing to explain myself very well, but you’ve definitely assured me that what I was asking wasn’t possible.

Since I see some people questioning what purpose this would have had for a class, I’ll explain a bit more.
This was the first class and was essentially just an introduction to DSLR cameras for people who had never used them. One of the things being taught was how each setting impacts on the photo, including how the shutter speed would affect the exposure of the photo. To demonstrate this, the teacher had everyone set their cameras to this mode and point them at a static object, then watch the light meter move as they changed the shutter speed.
I pointed out that I couldn’t do that and demonstrated to the teacher that my EC could only be altered manually in TV mode, and was told that my camera was doing something weird and to sort it out.

Everyone else was using cameras provided by the teacher, whereas I used my own, so I’m presuming the issue is that all the cameras provided were a type which functions in that way and they’re unused to seeing any other sort.

Anyway, I definitely have the answers I needed and I’ll hopefully be able to explain this to the teacher next class, thanks all.

Use live view and bring up the histogram, you will be able to do what others are doing. However the camera is going to change the aperture so your exposure should not change too much

i am not sure how the other cameras are working unless they have a fixed aperture.

dredge wrote in post #17895937
One of the things being taught was how each setting impacts on the photo, including how the shutter speed would affect the exposure of the photo. To demonstrate this, the teacher had everyone set their cameras to this mode and point them at a static object, then watch the light meter move as they changed the shutter speed.

That behavior would be expected in manual mode, not Tv.