Auto Iso in latest firmware

[ashapiro]

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Can someone tell me exactly how Auto Iso works in the latest version of the M8 firmware. First, are all the iso choices still available? (I'm sure they are, but I'd like to be sure.) Second, I hesitate to install 2.0 if it doesn't do what I expect it to do, since there's no going back.

 

Thanks --- Arthur

[Shootist]

Can someone tell me exactly how Auto Iso works in the latest version of the M8 firmware. First, are all the iso choices still available? (I'm sure they are, but I'd like to be sure.) Second, I hesitate to install 2.0 if it doesn't do what I expect it to do, since there's no going back.

 

Thanks --- Arthur

Try it, you'll like it.

Simple you set the ISO setting to Autot ISO, that is in the SET menu. Then you go into the real Menu, menu button and set the high ISO to whatever you want and the Lowest shutter speed, or Lens Dependent, that you want to use and your done.

I've saved those settings, along with all settings in the Menu and SET Menu options to my standard and then saved it as a User Profile.

[badpets]

i chose ISO Lowest Speed as 60 and set to Auto ISO mode, but the camera can still go below that. what have i done wrong?

 

Try it, you'll like it.

Simple you set the ISO setting to Autot ISO, that is in the SET menu. Then you go into the real Menu, menu button and set the high ISO to whatever you want and the Lowest shutter speed, or Lens Dependent, that you want to use and your done.

I've saved those settings, along with all settings in the Menu and SET Menu options to my standard and then saved it as a User Profile.

[stunsworth]

Probably nothing.

 

I'm assuming that if the exposure falls outside of the shutter/iso setting the camera is assuming you still want to take the shot. So if you set a minimum exposure of 1/30th and a maximum ISO of 640, and the actual exposure is 1/25th @ 640 the shutter will still fire. Otherwise you'd lose the shot altogether.

[badpets]

then the lowest speed option is practically meaningless.

 

Probably nothing.

 

I'm assuming that if the exposure falls outside of the shutter/iso setting the camera is assuming you still want to take the shot. So if you set a minimum exposure of 1/30th and a maximum ISO of 640, and the actual exposure is 1/25th @ 640 the shutter will still fire. Otherwise you'd lose the shot altogether.

[gesper]

The lowest speed tells the camera when to switch to the next higher ISO. If you are in ISO 160 and set lowest speed at 1/30 and the camera reads the exposure to need 1/15, it will move up to the ISO 320 so the speed will be 1/30. It will do this until it reaches the max ISO you set.

[stunsworth]

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then the lowest speed option is practically meaningless.

 

Not at all. As the exposure falls below the minimum shutter speed, the camera bumps up the ISO. If the exposure is still below the minimum it bumps up the ISO again. If it gets to the highest ISO that's been specified and the shutter speed is _still_ too slow it takes the shot with the slow speed.

 

The alternative would be for it to refuse to take the photograph. Now that _would_ piss people off.

 

Think of it as a system for automatically raising the ISO when necessary, it saves the photographer the trouble of going to the ISO menu.

[badpets]

i see. now it makes sense. was it written somewhere in the instruction? thanks gesper.

 

The lowest speed tells the camera when to switch to the next higher ISO. If you are in ISO 160 and set lowest speed at 1/30 and the camera reads the exposure to need 1/15, it will move up to the ISO 320 so the speed will be 1/30. It will do this until it reaches the max ISO you set.

[badpets]

Ok. So basically if the light condition is way too bad, Auto ISO will not be of any help.

 

Not at all. As the exposure falls below the minimum shutter speed, the camera bumps up the ISO. If the exposure is still below the minimum it bumps up the ISO again. If it gets to the highest ISO that's been specified and the shutter speed is _still_ too slow it takes the shot with the slow speed.

 

The alternative would be for it to refuse to take the photograph. Now that _would_ piss people off.

 

Think of it as a system for automatically raising the ISO when necessary, it saves the photographer the trouble of going to the ISO menu.

[stunsworth]

Ok. So basically if the light condition is way too bad, Auto ISO will not be of any help.

 

That's my interpretation - I haven't had a chance to have a play with it myself.

[Fotomiguel]

The auto iso is a big help when you shoot in changeable low light conditions. Sometimes, you just need a f-stop more or less, very helpfull. So I set for instans speed limit in 1/60 and iso limit 320. So normally the camera will work 160 iso and just when is a bit in the limit and go down the speed, would help me with a extra iso.

 

I want to thank Leica this new firmware. They could keep this new feature for the M8.2 or for the upgrade. But they give it to all of us. Thank you very much!!!!!!!!

 

I will use it just in some conditions and just at low isos, but it will be a very interesting option. Sometimes to shoot 1/60 or 1/30 is a great difference.

Leica has made a very easy and simple autoiso but at the sametime many options to set and many possiblilities for differents kinds of photographic works,

Cheers!

[scho]

I assume that with Lowest Speed set to Lens Dependent the camera will set a shutter speed appropriate for the focal length. I tried this with my 28 mm mounted and it used 1/90 sec minimum and with a 50 mm mounted the minimum went up to 1/125 sec. Conservative?

[stunsworth]

Conservative?

 

I don't think so. I've always felt that the old rule about the mnimum shutter speed being the reciprical of the focal length wasn't fast enough for many shots.

[Guest DuquesneG]

I don't think so. I've always felt that the old rule about the mnimum shutter speed being the reciprical of the focal length wasn't fast enough for many shots.

 

Plus remember, with the crop factor it should at least be the reciprocal of the effective focal length.

[ashapiro]

Thanks to all who responded to my questions and concerns. You convinced me to download version 2

 

Arthur

[Vieri]

Ok. So basically if the light condition is way too bad, Auto ISO will not be of any help.

 

It will be of help until it reaches the low limit of speed & maximum limit for ISO set by the user. After that, you are out of its working range and - therefore - auto ISO will not work for you.

 

Maybe you would be interested in "Auto Miracle", the new feature available with the M9, using which all your pics will be wonderful, perfectly composed, no grain, no banding, no green light, no problem whatsoever. The cost? Practically nothing, just 12.000 US or 10.000 US if you trade in your old M8.

[Shootist]

i chose ISO Lowest Speed as 60 and set to Auto ISO mode, but the camera can still go below that. what have i done wrong?

Right, you are taking a shot in a dark area. The lowest shutter speed you have set has been reached and the highest ISO speed you have set has been reached but yet you need more exposure time so the camera drops the shutter speed to whatever is needed.

Sounds like the right thing to do. Or would you reather have the camera NOT take a shot.

The lowest shutter speed you set is a guide as to when the camera raises the ISO.

Once both have been met there is only one thing to do drop the shutter speed.

The shutter speed you set is not the lowest speed the camera will go to when using A mode.

[garygsandhu]

Does it use intermediate iso values or only full stops?

[akiralx]

Ok. So basically if the light condition is way too bad, Auto ISO will not be of any help.

 

Well, it will have automatically bumped the ISO up one or more stops, as far as your max input figure - so it will have been some use.

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Hallo,

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[GarethC]

It will be of help until it reaches the low limit of speed & maximum limit for ISO set by the user. After that, you are out of its working range and - therefore - auto ISO will not work for you.

 

Maybe you would be interested in "Auto Miracle", the new feature available with the M9, using which all your pics will be wonderful, perfectly composed, no grain, no banding, no green light, no problem whatsoever. The cost? Practically nothing, just 12.000 US or 10.000 US if you trade in your old M8.

 

Not sure the sarcasm is warranted, I thought the thread was an interesting and informative dialogue.