Picture Taker Loc: Michigan Thumb

We have 3 things to balance, ISO, Speed and Opening (f). Today's cameras we can manually adjust all of them, any of them or non of them and the camera will respond with a good picture (cameras's technology). The photographer is only art part of the picture.
WE pick and chose how we donate mechanics and a better choice of focus, a little darker or lighter can also be a choice. That makes one photographer different from the other (details). The camera can take a good technical picture by it self.
Now we (photographers) argue what is better or is it tastes better. Is my picture better than yours?

fantom Loc: Colorado

jcboy3

Too bad you have to make stuff up because you can't read.

SuperflyTNT Loc: Manassas VA

Having an actual understanding of how things work is not “making them up”.

jcboy3

As I said…Auto ISO is not a “mode”. It can be used in most shooting modes.

I’ve explained how Auto ISO works in previous posts.

You are the one making stuff up, and it doesn’t help. You can’t show where it’s defined as a mode.

amfoto1 Loc: San Jose, Calif. USA

I use Auto ISO sometimes. It's just another form of auto exposure.

I only use Auto ISO with M, but then it's no longer a manual exposure mode.

This allows me to choose both my shutter speed and my aperture, such as when I want a fast shutter speed to capture sports action, but want to use a large aperture to blur down a distracting background.

I prefer to go fully manual exposure... lock in all three exposure factors... when I can. But that's not always possible shooting sports. I shoot a lot of sports, have to track subjects moving through different lighting conditions and be ready to quickly shoot in a different direction. Auto exposure is essential in those situations. Depending upon what I'm trying to do, I'll choose aperture priority, shutter priority or Auto ISO w/M. On rare occasion I may even use Program. Usually only when I need to quickly take a couple shots in radically different lighting, but will then return to what I was doing before using my previous exposure setup.

I don't know how Auto ISO works on your 77D and T7i. On my older 7Ds I couldn't use it because they didn't provide a means of limiting it and there was no means of Exposure Compensation. But with the pair of 7D Mark IIs that I've been using for four or five years Auto ISO is a good, usable setup. Unfortunately Exposure Compensation isn't quite the same as it is with the other auto exposure modes... with Auto ISO it has to be done with the Q Menu or in the main menu (because the dial used for Exposure Compensation in other AE modes is busy doing other stuff when the camera is in M mode).

I don't use Auto ISO with Av, Tv or P. I just don't see any purpose. With any of those would be a "double auto" exposure mode. That might not be very predictable. I'm really not sure because I've never found any need for it and haven't tried it.

I have a chuckle when someone says "I always shoot manual" (as if that's a good thing), only to find out that they're using Auto ISO. That means they are actually still doing auto exposure (which isn't a bad thing).

epd1947

These arguments are ridiculous and juvenile - what the hell difference does it make if auto ISO is referred to as a “mode” or not? Grow up and stop wasting everyone’s time with this stupidity.

SuperflyTNT Loc: Manassas VA

This all started because you said manual with auto ISO is not an automatic exposure mode and it certainly is if you could see past the end of your nose. You’re so stuck on semantics you ignore how things actually work.

User ID

Stupidity is a mode, not just a setting.

DaveO Loc: Northeast CT

Unbelievable!

keywest305 Loc: Baltimore Md.

I keep mine between 64 - 6400 if I did any shooting at night I will turn off my auto iso. I do mostly outdoors shooting during the daylight hours so auto iso works great for me.

fetzler Loc: North West PA

If you are only using ISO 100 you are missing many photographic opportunities.

raymondh Loc: Walker, MI

I don’t see how auto iso is any different than “auto” aperture priority or shutter priority modes. The camera is still making the exposure determination.

rehess Loc: South Bend, Indiana, USA

In ‘auto shutter speed’ or ‘auto aperture’ the essence of the photo changes - ‘motion stopping’ or DoF - but in ‘auto ISO’ + ‘M mode’ you still have control of those things.

larryepage Loc: North Texas area

You have control of those two things, but you lose control of dynamic range. With many cameras, color rendition changes significantly as ISO changes. I had at least one camera where resolution appeared to change in the extreme case, as if sensels were "tied together" in some fashion to achieve the higher sensitivity. I didn't care at the time, because I didn't like the results and avoided the high settings, so don't know if the resolution actually changed or just looked like it did.

My point here is that changing the ISO DOES change the essential charachter of the image. It can be by a little or a lot, but in no way does higher sensitivity come for free. Perhaps your standards and expectations have room for those changes, perhaps not. Just don't say there is no change. It can be readily seen even with a camera like the D850.