I read some reviews of the 90D and Fv mode. Old is new again.

When using Fv mode you have full control over the camera settings.

You can set all three parameters (AV, TV, ISO) as Manual.
You can set all three parameters (AV, TV, ISO) as Auto.
You can set two parameters as Manual and one as Auto.
You can set two parameters as Auto and one as Manual.

When at least one of the parameters is set as Auto you can also adjust Exposure Compensation.

The only time that the camera will set the shutter speed based on the focal length of the lens is when all three parameters (AV, TV, ISO) are set to Auto.

john crossley wrote in post #19001457
When using Fv mode you have full control over the camera settings.

You can set all three parameters (AV, TV, ISO) as Manual.
You can set all three parameters (AV, TV, ISO) as Auto.
You can set two parameters as Manual and one as Auto.
You can set two parameters as Auto and one as Manual.

When at least one of the parameters is set as Auto you can also adjust Exposure Compensation.

The only time that the camera will set the shutter speed based on the focal length of the lens is when all three parameters (AV, TV, ISO) are set to Auto.

Thanks for saving me a bit of homework, what you described is what I would inherently expect Fv to do...set FL-dependent shutter speed when all parameters on Auto. I still want to read and understand the function of the camera on my own, nevertheless.

IMHO, Fv mode is an extension of the Point-and-Shoot snapshooter automation ('my brain does not compute') that camera makers first put into SLRs then dSLRs in an effort to get the uninformed camera buyerr to buy up, rather than buy P&S. Indeed it is useful even for pros, when there are times when things are happening much too fast, and auto-everything is needed to be able to capture what is happening in front of the lens. And then the full range in between no-care and fully-care shooting.

john crossley wrote in post #19001457
When using Fv mode you have full control over the camera settings.

You can set all three parameters (AV, TV, ISO) as Manual.
You can set all three parameters (AV, TV, ISO) as Auto.
You can set two parameters as Manual and one as Auto.
You can set two parameters as Auto and one as Manual.

When at least one of the parameters is set as Auto you can also adjust Exposure Compensation.

The only time that the camera will set the shutter speed based on the focal length of the lens is when all three parameters (AV, TV, ISO) are set to Auto.

This is exactly how my 645N works. With the notable exception of it has no mode dial, or no modes for that matter. It was released in 1998. Nice to see Canon finally catching up. They'll get it right next time.

I suppose I could expound on that last idea: no mode dial. Canon could do away with the mode dial completely if it only added an AUTO setting to selectable apertures and shutter speeds, just like it currently does with ISO. No mode dial. Think of that. If you are struggling, look at Mr. Crossley's post, #16, above. The ramifications are, potentially, huge. Ok, they would have to add a 'BULB' to shutter speeds.

OOOH, OOOH, OOOH! They could also do away with those annoying, completely useless, knob-cluttering 'SCN' modes, and the like. Want a dSLR? Learn how to operate the damn thing!

I started a new thread about 'Modeless' here: https://photography-on-the.net …/showthread.php​?t=1513030

Pippan wrote in post #19001341
What I'd like to see is a 'mode' where you manually select everything (as in M) but which maintains exposure if you suddenly need to change the shutter speed or aperture. So you suddenly need a quarter of the shutter speed to freeze some motion, or 2 stops more DOF, so the camera automatically ups the ISO by 2 stops to maintain the exposure value you've manually set. This would be different to auto-ISO because you're not using the meter, just your manual settings for exposure. They could call it Ev. Mind you, a proper ETTRv, like Tom R's been railing for, would be better still.

Well I have this option on my 50D, it along with DualISO were the main driving forces behind me installing MagicLantern. There are actually quite a lot of settings in ML that help the "still" photographer, it's not just all about shooting better video. With ML's EV lock you can chose which "other" setting is the primary choice as you change a setting, and if that setting runs out of adjustment range it will move to adjusting the other. It can mean though that if you change the shutter over a wide range, say from 1/2000s to 1/20s you won't necessarily end up back at the same aperture/ISO combination that you started with when you move back to 1/2000s. Other than that it's perfect, as long as you remember to disable it when you actually want to change the exposure.

Alan

PentaxShooter wrote in post #19002003
I suppose I could expound on that last idea: no mode dial. Canon could do away with the mode dial completely if it only added an AUTO setting to selectable apertures and shutter speeds, just like it currently does with ISO. No mode dial. Think of that. If you are struggling, look at Mr. Crossley's post, #16, above. The ramifications are, potentially, huge. Ok, they would have to add a 'BULB' to shutter speeds.

OOOH, OOOH, OOOH! They could also do away with those annoying, completely useless, knob-cluttering 'SCN' modes, and the like. Want a dSLR? Learn how to operate the damn thing!

I started a new thread about 'Modeless' here: https://photography-on-the.net …/showthread.php​?t=1513030

Just to present a counterpoint to having A on aperture selection, A on shutter speed selection, and A on ISO, thereby eliminationg the Model dial...

1. If you had a selected aperture, a selected shutter speed, and a selected ISO, you have THREE changes to make to put your camera on full Auto.
   
2. If you had your camera on full Auto, you have THREE changes to make to put your camera in Manual.
   

I have seen the light!

BigAl007 wrote in post #19003937
Well I have this option on my 50D, it along with DualISO were the main driving forces behind me installing MagicLantern. There are actually quite a lot of settings in ML that help the "still" photographer, it's not just all about shooting better video. With ML's EV lock you can chose which "other" setting is the primary choice as you change a setting, and if that setting runs out of adjustment range it will move to adjusting the other. It can mean though that if you change the shutter over a wide range, say from 1/2000s to 1/20s you won't necessarily end up back at the same aperture/ISO combination that you started with when you move back to 1/2000s. Other than that it's perfect, as long as you remember to disable it when you actually want to change the exposure.

Alan

That's very interesting. I checked out the ML website and unfortunately it appears not to be available for the 80D I use. Maybe in the future some time.