auto iso (Page 2): If I remember correctly, this is one of Steve Perry's operational procedures. So it must have some merrit. I have be giving it a try, especially under fast moving...

lmTrying Loc: WV Northern Panhandle

If I remember correctly, this is one of Steve Perry's operational procedures. So it must have some merrit. I have be giving it a try, especially under fast moving clouds.

BebuLamar

srt101fan wrote:

He's trying to learn, Bebu!

OK so here goes!
Auto ISO is an auto mode just like any auto mode. It relies on the meter and set the exposure accordingly. The meter may or may not indicate a good exposure. I must say that most of the time it would indicate a decent exposure. When you use Auto ISO and have the camera on manual the camera will only adjust the ISO within the range that you allow it to get the exposure it thinks that is correct based on the meter reading.

TonyBot

BebuLamar wrote:

Auto ISO is good but if you don't know how it works don't use it.

It's mostly good, but you DO have give it a try. It's the only way you'll learn - what's good as well as it's limitations. Turn on the histogram display ("info" on the back of your camera), and "chimp" for a while. You'll learn, and you will have another tool available to you to get the shots you want!

srt101fan

BebuLamar wrote:

OK so here goes!
Auto ISO is an auto mode just like any auto mode. It relies on the meter and set the exposure accordingly. The meter may or may not indicate a good exposure. I must say that most of the time it would indicate a decent exposure. When you use Auto ISO and have the camera on manual the camera will only adjust the ISO within the range that you allow it to get the exposure it thinks that is correct based on the meter reading.

jeep_daddy Loc: Prescott AZ

watersedge wrote:

i have never used auto iso...is it any good?

i have a canon 60d and was tinking of using manual. if i set my shutter speed at 150 and aperture at say 14. would the auto iso work correctly to five me a good photo

Why don't you give it a try. I've tried it, and I think everyone should give it a try. Make your own decision.

DaveO Loc: Northeast CT

As mentioned, check out Steve Perry's take:

https://www.youtube.com/watch?v=mFLxYMLsv8I

Ysarex Loc: St. Louis

watersedge wrote:

i have never used auto iso...is it any good?

i have a canon 60d and was tinking of using manual. if i set my shutter speed at 150 and aperture at say 14. would the auto iso work correctly to five me a good photo

Auto ISO is a great idea and typically works very well. If you're going to set the exposure manually then don't set an upper limit to the ISO value since the camera will not be able to alter the shutter speed or f/stop to avoid exceeding the upper ISO limit. Just pay attention to what the camera is selecting -- get a feel for your working range. EC adjustments then should alter the ISO which is rather odd behavior now that we're in the digital age since altering the ISO in this context doesn't compensate the exposure.

Don't set your f/stop to f/14 -- what are you doing that you think you would need f/14? That's past the diffraction limit for your camera and should be treated as a special case. How about f/8 if you want reasonable DOF.

Joe

swartfort Loc: Evansville, IN

StanMac wrote:

IMO, to truly go manual, you should set ALL exposure parameters to suit the subject and lighting conditions for the exposure you want. Leaving anything to automation isn’t truly manual.

Stan

Bless you for being purist. But you do realize that not everyone is more interested in camera function vs. captures of great images. I often wonder if those who seem to pride themselves on the purity of total manual also only use images SOOC or if Photoshop et.al is an acceptable non manual alteration. If one is so skilled at using pure manual, then zero editing should be needed.

I am also get curious with purists who don't have a body of images posted. I admire good work, and pure manual, SOOC images would be great to see.

My "discounted" images are in my link Below....

The OP had a valid question, but I don't think your purist response was even an attempt to be helpful. But who am I? I just use what I can to get the best images I can... Go figure....

My $0.02, and it probably isn't worth that

Strodav Loc: Houston, Tx

In natural light with fixed ISO, if DOF is important, set the aperture (A mode) and the camera will select the shutter speed. If motion is more important, set the shutter speed (S mode) and the camera will select the aperture. With auto ISO, you can set both aperture (DOF) and shutter speed (freeze or blur motion) in manual mode and the camera will adjust ISO for "proper" exposure. The only downside is the higher the ISO number the more noise you will see in your image. Of course, if you are using artificial light you have another variable you can adjust.

For birding with long lenses, you want to have a high shutter speed (guideline of 1/1000 - 1/2500 sec ) with a wide open aperture to separate the subject from the background and let ISO float. For my cameras and tolerance, I let ISO range from 100 - 1600 on my D500. For my D850, I let ISO range from 64-1600. ISO 1600 is my tolerance for noise. If I can't get a proper exposure, I may manually boost the ISO temporarily so I can get the shot then deal with the noise in PP.

Grahame Loc: Fiji

watersedge wrote:

i have never used auto iso...is it any good?

It's fantastic when used correctly.

watersedge wrote:

i have a canon 60d and was tinking of using manual. if i set my shutter speed at 150 and aperture at say 14. would the auto iso work correctly to five me a good photo

It will give you the same exposure (I refer to image brightness before the purists jump in) as any other Auto mode, all of which may not satisfactorily give the result you want due to scene/subject lighting and metering mode used. This being where EC may have to be used, as in any mode.

I use it regularly in the manner you mention with my Aperture and Speed adjusted manually, each value individually determined by what I'm shooting and allow the ISO to 'float'.

But .................. and a very big BUT

I will always watch and monitor the ISO value in the viewfinder to decide if this is acceptable for the results I want and also to see if the ISO determined allows me to 'gain' with either aperture or speed.

The way I have always looked at this mode is that it's simply a way of manipulating three settings by only having to alter one or two.

rmalarz Loc: Tempe, Arizona

I've never used auto ISO and prefer to be the one to control the camera's settings. There are some really good photographers on this site that use it and use it well for what they do. Similarly, I need to get the results I want and to do that I control the settings.
--Bob

watersedge wrote:

i have never used auto iso...is it any good?

i have a canon 60d and was tinking of using manual. if i set my shutter speed at 150 and aperture at say 14. would the auto iso work correctly to five me a good photo

DaveO Loc: Northeast CT

StanMac wrote:

IMO, to truly go manual, you should set ALL exposure parameters to suit the subject and lighting conditions for the exposure you want. Leaving anything to automation isn’t truly manual.

Stan

Don, the 2nd son Loc: Crowded Florida

Linda From Maine wrote:

The million-dollar question and observation. It's all about the light! If you want strong contrasts or silhouettes then don't use auto ISO.

Don, the 2nd son Loc: Crowded Florida

If used the metering pattern is VERY important.

Grahame Loc: Fiji

Don, the 2nd son wrote:

If used the metering pattern is VERY important.

Are you suggesting the "metering pattern" (I read as spot/centre/matrix) used is more important when using 'Auto ISO' than if you were using Aperture Priority or Speed Priority modes with a fixed manually set ISO ?