5D3 Auto ISO

[bobby samat]

i've never used this feature until today. took some shots with it around my house with with a 24-70 & 70-200. at 24mm the shutter speed on AV was at 1/30. at 200mm it was at 1/200.

anyone have experience with this feature and whether it's reliable or not?

 

[Loswr]

By default, in Av mode with auto ISO, the camera will choose a shutter speed based on the 1/focal length rule (ignoring IS). There is a setting which allows you to apply a minimum shutter speed in Av, to avoid subject motion blur with wider lenses. Personally, I use 1/125 a as a minimum for 'still' subjects (people not intentionally moving).

 

[bobby samat]

at 24mm, i would like it to stay at or above 1/50. at 200mm, 1/200 would generally be fine for me.

i wish you could set it for a few different focal lengths instead of a single deault. 16, 24, 50, 85, 100, 150 & 200mm would be cool 8)

 

[Dylan777]

at 24mm, i would like it to stay at or above 1/50. at 200mm, 1/200 would generally be fine for me.

i wish you could set it for a few different focal lengths instead of a single deault. 16, 24, 50, 85, 100, 150 & 200mm would be cool 8)

It calls "M" mode in 5D III. You control aperture and shutter speed, camera selects best ISO.

When shooting in "M" mode:
1. Indoor or low light shooting, keep an eye on high ISO. My cut off point is 6400
2. Outdoor/day light, keep an eye on exp comp

 

[mackguyver]

1. Indoor or low light shooting, keep an eye on high ISO. My cut off point is 6400

There's your excuse to get a 1D X. My personal 5DIII ISO threshold is also 6400, but my 1D X threshold is 25600 .

 

[Dylan777]

1. Indoor or low light shooting, keep an eye on high ISO. My cut off point is 6400

There's your excuse to get a 1D X. My personal 5DIII ISO threshold is also 6400, but my 1D X threshold is 25600 .

Are you joking ? My itchyy for 1DX has not yet ended.

 

[mackguyver]

1. Indoor or low light shooting, keep an eye on high ISO. My cut off point is 6400

There's your excuse to get a 1D X. My personal 5DIII ISO threshold is also 6400, but my 1D X threshold is 25600 .

Are you joking ? My itchyy for 1DX has not yet ended.

No joke, especially with DxO PRIME. The 1D X with a 70-200 f/2.8 IS II works pretty well if you need to use it to scratch an itch on your back, btw ;D

 

[Akhiel]

i've never used this feature until today. took some shots with it around my house with with a 24-70 & 70-200. at 24mm the shutter speed on AV was at 1/30. at 200mm it was at 1/200.

anyone have experience with this feature and whether it's reliable or not?

I have used this feature regularly with my 5D3.
It works fine, when there's enough light. I used this feature mostly when shooting action events (high shutter speed). If light condition is critical, you better measure the light to adjust the shutterspeed and aperture, so that the camera doesn't have to go for too high iso-value. Otherwise this will create unnecessary amount of noise. For example, taking photos in the evening of an sport event with artificial light, you will need an f2.8 lens.
Back to 5D3, also f4 or f5.6 will help, it depends on what do you want to use the photo for: website (ok), small prints (ok), but for prints larger than 12inch-line you should stay under the ISO6400. Note that you can set a limit for maxumum ISO-value, also when using Auto-iso.

 

[kurtj29]

I use this feature all the time on my 1D4. It is wonderful. You need to be in manual mode but shooting lacrosse games in which part the field has sunlight and the other side or portions are in shade this is a lifesaver. I set the camera at 1/1200 sec and f/2.8. Just make sure if it is really bright you down blow the highlights. Best new feature added to the 5D3, 1D4 and 1DX.

 

[LetTheRightLensIn]

i've never used this feature until today. took some shots with it around my house with with a 24-70 & 70-200. at 24mm the shutter speed on AV was at 1/30. at 200mm it was at 1/200.

anyone have experience with this feature and whether it's reliable or not?

It really only truly works on the 1DX (or on any model from any OTHER manufacturer). Canon cripples on almost all of their bodies. The 5D3 doesn't allow EC and the highest min shutter speeds it allows for Av mode are ridiculously low and largely useless (no technical reason for this, just annoying marketing department games).

 

[mackguyver]

i've never used this feature until today. took some shots with it around my house with with a 24-70 & 70-200. at 24mm the shutter speed on AV was at 1/30. at 200mm it was at 1/200.

anyone have experience with this feature and whether it's reliable or not?

It really only truly works on the 1DX (or on any model from any OTHER manufacturer). Canon cripples on almost all of their bodies. The 5D3 doesn't allow EC and the highest min shutter speeds it allows for Av mode are ridiculously low and largely useless (no technical reason for this, just annoying marketing department games).

I'm still scratching my head on this one - when Nikon has had this for many years and allowed you to select the top (1/4000 or 1/8000s) shutter speed, why did Canon launch the 1D X with it capped at 1/250s. And why have they not fixed that in all cameras after fixing it in the 1D X? NOW it seems like a gimmick, but before the 1D X firmware, it just seemed like a stupid mistake. Scott Kelby, a longtime Nikon user who tried and ultimately switched to Canon, had only one complaint about the 1D X - and that was it!

 

[LetTheRightLensIn]

i've never used this feature until today. took some shots with it around my house with with a 24-70 & 70-200. at 24mm the shutter speed on AV was at 1/30. at 200mm it was at 1/200.

anyone have experience with this feature and whether it's reliable or not?

It really only truly works on the 1DX (or on any model from any OTHER manufacturer). Canon cripples on almost all of their bodies. The 5D3 doesn't allow EC and the highest min shutter speeds it allows for Av mode are ridiculously low and largely useless (no technical reason for this, just annoying marketing department games).

I'm still scratching my head on this one - when Nikon has had this for many years and allowed you to select the top (1/4000 or 1/8000s) shutter speed, why did Canon launch the 1D X with it capped at 1/250s. And why have they not fixed that in all cameras after fixing it in the 1D X? NOW it seems like a gimmick, but before the 1D X firmware, it just seemed like a stupid mistake. Scott Kelby, a longtime Nikon user who tried and ultimately switched to Canon, had only one complaint about the 1D X - and that was it!

Marketing department gone mad. AutoISO is utterly trivial to implement in a DSLR and as near zero cost as a feature can be to add to a camera, but Canon has insisted on slowly dribbling it out over more than a decade now so they can keep pointing to improved autoiso each new model, rather a joke. There is no tech issue in the slightest, a couple bits of altered code could fix the 5D3 silly restriction. I wonder how hard it would be to dig through the code and find it and do a ML type hack around the restriction? I'm sure plenty doable, but likely quite a drag to say the least.

 

[Loswr]

i've never used this feature until today. took some shots with it around my house with with a 24-70 & 70-200. at 24mm the shutter speed on AV was at 1/30. at 200mm it was at 1/200.

anyone have experience with this feature and whether it's reliable or not?

It really only truly works on the 1DX (or on any model from any OTHER manufacturer). Canon cripples on almost all of their bodies. The 5D3 doesn't allow EC and the highest min shutter speeds it allows for Av mode are ridiculously low and largely useless (no technical reason for this, just annoying marketing department games).

I'm still scratching my head on this one - when Nikon has had this for many years and allowed you to select the top (1/4000 or 1/8000s) shutter speed, why did Canon launch the 1D X with it capped at 1/250s. And why have they not fixed that in all cameras after fixing it in the 1D X? NOW it seems like a gimmick, but before the 1D X firmware, it just seemed like a stupid mistake. Scott Kelby, a longtime Nikon user who tried and ultimately switched to Canon, had only one complaint about the 1D X - and that was it!

Just to point out, the 1-series bodies have long been able to set a minimum/maximum shutter speed and/or aperture, to any of the possible settings.

 

[bdunbar79]

I was going to say something. I bought one of the first 1Dx's in August 2012 and it was never limited to 1/250s. I could set it to whatever I wanted and it never needed to be "fixed" by Canon. You can set min/max apertures, shutters, ISO values to any value in their respective ranges, and also ISO safety shift. And you always have been able to do so with 1D-series bodies.

 

[rpt]

I shoot I'm M mode with auto ISO. I am usually at the longest end of my lenses when not shooting humans so fixing the shutter speed is not an issue. I think my shots usually come out ok.

 

[mackguyver]

neuro & bdunbar, I'm talking specifically about the Auto ISO shutter speed limit, which is new, at least to the 1D X, and was limited to 1/250s, as the 5DIII and presumably other new bodies are:
http://www.usa.canon.com/cusa/consumer/standard_display/eos_1dx_afae_improve

 

[Marsu42]

It really only truly works on the 1DX (or on any model from any OTHER manufacturer). Canon cripples on almost all of their bodies. The 5D3 doesn't allow EC and the highest min shutter speeds it allows for Av mode are ridiculously low and largely useless (no technical reason for this, just annoying marketing department games).

That's why you use Magic Lantern to un-cripple auto_iso :-> ... the (wip) module has unlimited min. shutter speed in av, min. aperture in tv and ec in m. You can even use flash with auto iso when afaik even the 1d locks you @iso 400 the instant you turn on the flash.

 

[Loswr]

neuro & bdunbar, I'm talking specifically about the Auto ISO shutter speed limit, which is new, at least to the 1D X, and was limited to 1/250s, as the 5DIII and presumably other new bodies are:
http://www.usa.canon.com/cusa/consumer/standard_display/eos_1dx_afae_improve

Yes, I know. I can set the power for my 600EX-RT in the camera menus or on the flash itself. Point being, there's more than one way to achieve a minimum shutter speed setting, and the 'normal' 1-series way has never been limited. Conversely, only on the 1-series can you use Tv mode and set a maximum aperture narrower than wide open to give sufficient DoF.

 

[LetTheRightLensIn]

It really only truly works on the 1DX (or on any model from any OTHER manufacturer). Canon cripples on almost all of their bodies. The 5D3 doesn't allow EC and the highest min shutter speeds it allows for Av mode are ridiculously low and largely useless (no technical reason for this, just annoying marketing department games).

That's why you use Magic Lantern to un-cripple auto_iso :-> ... the (wip) module has unlimited min. shutter speed in av, min. aperture in tv and ec in m. You can even use flash with auto iso when afaik even the 1d locks you @iso 400 the instant you turn on the flash.

Oh wow, so ML already unlocked it? Here I was thinking I might have to finally dig into the code myself. Man, they are fast. Sweet. OK, I guess it's not a practical issue anymore.

It's kinda crazy that ML single handedly has turned the 5D3 into magic, turning a disappointingly conservative video upgrade into something really special and now fixing up all the dumb little bits of stills things marketing had them crippled out.

 

[Marsu42]

Oh wow, so ML already unlocked it? Here I was thinking I might have to finally dig into the code myself. Man, they are fast. Sweet. OK, I guess it's not a practical issue anymore.

The "ML Auto ISO" function is present in the stable v2.3 Magic Lantern, for newer cameras that aren't covered by the stable release there's (only) a wip module that isn't in the nightlies yet. I know because I wrote it but I haven't found the time to polish it enough to push it to the main branch.

The ML core devs aren't very interested in it because they don't shoot action and don't need use auto iso but shoot mostly ettr in M mode w/o auto iso (so they also don't need ec in m which the module also provides)