topic Re: 1DX ii Minimum shutter speed in AV mode in EOS DSLR & Mirrorless Cameras

1DX ii Minimum shutter speed in AV mode

settysphoto — Wed, 29 May 2019 20:59:37 GMT

When using the AV mode on my canon 1dx ii with the 500mm f4 it determines the shutter speed based on the focal length used for hand holding which means it usually aims for around 1/1000th of a second but while it aims for this said shutter speed it ramps up the ISO to maintain the shutter speed at 1/1000th. The shutter speed does not need to be that high, i can quite easily hand hold it at 1/500 of a second which would bring the ISO down too.

If i use the 500mm lens on my 5D iii on AV mode the shutter speed & ISO it decides is much more reasonable because this camera does not determine what the shutter speed should be based on focal length.

Why isnt there a way to just turn the feature off on the 1dx?

Maybe im missing something obvious?

Id really like to have it how my 5D iii is.

Is there a workaround from this issue?

Re: 1DX ii Minimum shutter speed in AV mode

PLee — Wed, 29 May 2019 21:10:48 GMT

C.Fn3: Exposure
Set Shutter Speed Range
Highest Speed = 500
OK

Note that this is a global setting affecting all shooting modes when turned on.

Re: 1DX ii Minimum shutter speed in AV mode

Waddizzle — Wed, 29 May 2019 21:59:35 GMT

This is exactly why I like to use Manual mode with ISO set to Auto. My aperture remains constant. I can dial in any shutter speed I want

I like to program the [SET] button for AEC.

Re: 1DX ii Minimum shutter speed in AV mode

jrhoffman75 — Thu, 30 May 2019 15:25:12 GMT

Are you sure you are using the same metering selection for both cameras?

Neither camera manual discusses what you are saying. Since both cameras are full frame the 1/FL of 1/500 should be the same for both cameras.

I would be surprised that the 1D X would be doing more "secret" adjustments than the 5D.

Edit: My expereince is the same as Ernie's below.

To quote: "I have never used the ef 500mm f4L lens on my 1DX so I can't speak of it. But none of my other lenses (teles) tell the camera what SS to use in Av."

Re: 1DX ii Minimum shutter speed in AV mode

ebiggs1 — Thu, 30 May 2019 14:48:42 GMT

I have never used the ef 500mm f4L lens on my 1DX so I can't speak of it. But none of my other lenses (teles) tell the camera what SS to use in Av. I use Av 80% of the time, too. Maybe more! I don't like auto ISO, preferring to set it where I want it and I want it to stay there. I have heard of folks setting M mode and auto ISO, then thinking they are in full manual. That's nuts.

Try resetting your camera as you might have set something limiting SS or ISO or something.

Re: 1DX ii Minimum shutter speed in AV mode

Waddizzle — Thu, 30 May 2019 15:32:33 GMT

“ I have heard of folks setting M mode and auto ISO, then thinking they are in full manual. That's nuts. “

You are the only one who believes that. I even made s post about that approach and called it “Exposure Priority.”

Re: 1DX ii Minimum shutter speed in AV mode

jrhoffman75 — Thu, 30 May 2019 15:45:12 GMT

@Waddizzle wrote:
“ I have heard of folks setting M mode and auto ISO, then thinking they are in full manual. That's nuts. “

You are the only one who believes that. I even made s post about that approach and called it “Exposure Priority.”

I would agree its not full manual, since there is an auto component.

But, I do agree its a solid approach. Typically one is going into manual mode becasue they want a particular shutter speed/aperture combination (otherwise they'd use Av or Tv). Allowing the ISO to change automatically allows that combination to be maintained and saves the time of switching ISO manually. What would be the use case for not using Auto ISO? Not looking to be argumentative - looking to learn an alternate viewpoint.

Re: 1DX ii Minimum shutter speed in AV mode

ebiggs1 — Thu, 30 May 2019 16:05:32 GMT

" Not looking to be argumentative - looking to learn an alternate viewpoint."

I have no objection for using auto ISO. It is just another setting. It is calling it manual mode that is wrong. It is not "manual mode". That is my objection. I use manual model except..........

Personally I rarely to never use it because I usually want a certain ISO and I don't want it changing. Maybe I don't want grain, whatever. I know I can set a range that it must stay in but that almost defeats the idea of using it in the first place. If I use manual, which I also rarely do, I want manual. My preferred mode is Av and in this use of the definition it is manual mode too except ... the camera lets the SS range freely.

Maybe it's just because I come from a world that was truly manual so that is how I see it.

Re: 1DX ii Minimum shutter speed in AV mode

settysphoto — Thu, 30 May 2019 16:54:19 GMT

@ebiggs1 wrote:
I have never used the ef 500mm f4L lens on my 1DX so I can't speak of it. But none of my other lenses (teles) tell the camera what SS to use in Av. I use Av 80% of the time, too. Maybe more! I don't like auto ISO, preferring to set it where I want it and I want it to stay there. I have heard of folks setting M mode and auto ISO, then thinking they are in full manual. That's nuts.

Try resetting your camera as you might have set something limiting SS or ISO or something.

From what i believe no matter what lens you put onto the 1dx ii the shutter speed in av mode is determined by the focal length.

This is my understanding anyway.

If you go to the red setting tab and go along one you'll see a setting called "ISO SPEED SETTINGS" once entering this you will see a Min. shutter spd. setting. if you press info on this it explains how it works and this is in canon's own words.

"ISO speed is automatically shifted so that the value is not lower than the specified shutter speed."

futher down it says the following

"[Auto] The minimum shutter speed is set automatically based on lens focal length. This value can be adjusted slower or faster"

SO because the camera is setting the shutterspeed automatically the ISO shifts to match it so that the shutter isnt lower than what it wants it to be based off of the focal length.

Re: 1DX ii Minimum shutter speed in AV mode

Waddizzle — Thu, 30 May 2019 19:09:48 GMT

“What would be the use case for not using Auto ISO? Not looking to be argumentative - looking to learn an alternate viewpoint.“

I frequently make panoramic shots. I set ISO manually when I capture them.

I want the camera to never control more than one leg of the exposure triangle.

Re: 1DX ii Minimum shutter speed in AV mode

Waddizzle — Thu, 30 May 2019 19:13:34 GMT

Also, you can dial AEC in Manual with ISO set to Auto on most of the high performance bodies. When you set ISO manually, then AEC may become unavailable.

Re: 1DX ii Minimum shutter speed in AV mode

Waddizzle — Thu, 30 May 2019 19:16:17 GMT

“SO because the camera is setting the shutterspeed automatically the ISO shifts to match it so that the shutter isnt lower than what it wants it to be based off of the focal length.”

You should be able to disable all of that behavior. Make “Safety Shift” is disabled, too.

Re: 1DX ii Minimum shutter speed in AV mode

settysphoto — Thu, 30 May 2019 20:13:46 GMT

@Waddizzle wrote:
“SO because the camera is setting the shutterspeed automatically the ISO shifts to match it so that the shutter isnt lower than what it wants it to be based off of the focal length.”

You should be able to disable all of that behavior. Make “Safety Shift” is disabled, too.

You cant disable it, its on auto by default. The only other option it gives you is to set your own custom minimum shutterspeed.

It defeats the purpose of AV mode imo so realistically you may aswell just use manual mode and not even have the AV mode on the 1dx ii

"Safty Shift" was also disabled.

Re: 1DX ii Minimum shutter speed in AV mode

settysphoto — Thu, 30 May 2019 20:19:23 GMT

Thinking about it now, with what i just wrote i think thats the answer.
To set a custom minimum shutterspeed extremely low that in normal cases it would never reach. But still there should just be an off option, you shouldn't need to have to set a minimum shutterspeed period.

Re: 1DX ii Minimum shutter speed in AV mode

jrhoffman75 — Thu, 30 May 2019 20:32:50 GMT

Check pg 168 of your manual and see if you didn't inadvertenty dial in a setting. At the "0" poistion the camera selected minimum shutter speed is 1/FL.

This is a new adjustment added to the 1D X Mk II.

Re: 1DX ii Minimum shutter speed in AV mode

Waddizzle — Thu, 30 May 2019 20:36:21 GMT

Doesn’t that setting have slider? I notice mine is set for [Auto -3].

But, if am using that much focal length, that usually means I am shooting sports or wildlife. And if I shooting sports then I am using manual mode with ISO set to Auto.

The aperture and shutter stay fixed. I do not have to worry too much about settings. As long as nothing is blinking in the viewfinder, then I am good to shoot. I can put my attention on the shot composition and tracking subjects.

Re: 1DX ii Minimum shutter speed in AV mode

jrhoffman75 — Thu, 30 May 2019 20:52:36 GMT

It does, and if it was inadvertently shifted to +1 then the 1/500 would become 1/1000.

Re: 1DX ii Minimum shutter speed in AV mode

settysphoto — Thu, 30 May 2019 21:45:05 GMT

@jrhoffman75 wrote:
Check pg 168 of your manual and see if you didn't inadvertenty dial in a setting. At the "0" poistion the camera selected minimum shutter speed is 1/FL.

This is a new adjustment added to the 1D X Mk II.

Here's what happened the other day, I was outside and it was reading 1/1000th at AUTO ISO 3200 in AV mode.

The position of that setting was and has always been set to "0"

So why did it choose 1/1000th at ISO 3200 when it could have picked 1/500th at ISO 1600?

That's what makes me believe even with the setting on "0" it is still picking the shutter speed based off of the focal length?

Re: 1DX ii Minimum shutter speed in AV mode

jrhoffman75 — Thu, 30 May 2019 21:28:39 GMT

I’m not following your logic. It sounds like it isn’t setting shutter speed based on focal length. If it was it would select 1/500.

I would suggest resetting camera to factory and clearing all custom settings if this is an important issue to you.

Re: 1DX ii Minimum shutter speed in AV mode

Waddizzle — Thu, 30 May 2019 23:35:58 GMT

“I have no objection for using auto ISO. It is just another setting. It is calling it manual mode that is wrong. It is not "manual mode". That is my objection. I use manual model except.......... ”

Take it up with Canon and Webster’s Dictionary. That is the name of the shooting mode that Canon used. BTW, if you use an autofocus lens when shooting mode is “Manual”, then I guess that is not “manual shooting”, either.