Auto ISO settings?

[Scam]

I was going to post this in the Fuji thread but it's fairly relevant to all cameras, so what auto ISO settings do you all use? If you do use it?

The first trip I took with my XT10 I was setting my minimum shutter speed to 1/60 -- I was only using the 35/f2 and 14/f2.8 so my theory was that followed the rule of 1/focal length for safety. However a few of my shots came out not quite blurry, but not quite as 'crisp' as I'd have hoped. What do you all use as your minimum shutter speeds when using auto ISO? Do you think the following settings might be a bit better? I'm setting them as Quick settings so in order would have Quick settings for bright light, medium light and not-much-light

AUTO 1: ISO base 200 + ISO limit 400 + Min shutter 1/160

AUTO 2: ISO base 200 + ISO limit 3200 + Min shutter 1/100

AUTO 3: ISO base 400 + ISO limit 6400 + Min shutter 1/80

Again, I'll be using the 14mm and 35mm primes, most likely with polarisers in the sunshine too. Am I being too conservative with the ISO limit in AUTO 1? The XT10 is pretty decent up to 3200...

Cheers.

 

[Scam]

Yeah I think you're right. I need to see some comparisons of the same scene shot at 200 and 3200 maybe. Struggling to find any right now?

Do you think 1/100 is a good shutter speed cut off for street shots and landscapes/architecture?

 

[Scam]

Thanks. I think some of the issues may have been user error. A bit snap happy, first time out with a mirrorless and forgetting simple things like breathing and bracing. Certainly need to remember those as it is such a lighter camera than my old Nikon D50! You can see some of them on my Flickr, just feels like perhaps some of them woyld have benefited from a higher iso and faster shutter speed, I'd sort of got in my head that it's sunny therefore anything over 200 is bad! Not really the case.

Oh and I always shoot aperture priority unless it's a tricky static shot I want to get.

So DP you're saying there's really no point having 3 different custom auto iso settings, one is enough?

 

[Scam]

Yeah got it. Seen as I only have my 14 and 35 primes the shutter speed limit wouldn't be too much of any issues.

I wonder though, by using auto iso at a min shutter speed of (say) 1/125, does that not mean all of your shots are going to come out at 1/125? Because if the camera thinks there is more light rather than lengthen the shutter speed it will lower the iso, and if it thinks there is less light it will up the iso until it gets good exposure at 1/125?

 

[Scam]

That is the whole purpose of Auto ISO. If you wnat 1/125th shutter speed then it will increase ISO until that can be reached. If conditions are bright enough it will reduce ISO to the base level, if it is still bright enough the shutter will increase in speed.

No I get that, I'm just curious if it means ALL of your shots will come out at 1/125

(snip)

I guess what I'm really trying to say is keep your shutter speed fast enough and don't worry about iso as much.

I work pretty much the opposite way. I'm generally shooting people/street shots or landscapes. But not fully blown landscapes with tripod, more like holiday snaps to be perfectly honest. I like to control aperture and keep an eye on the shutter speed, hence my interest in how auto ISO can help that. Each to their own