Just purchased a beautiful 400mm 3.5 ais manual focus lens to use with d800. Works perfectly fine in aperture priority mode as it should. Is there any reason not to use auto iso in manual mode? Will experiment later today.
Archiefamous wrote:
Just purchased a beautiful 400mm 3.5 ais manual focus lens to use with d800. Works perfectly fine in aperture priority mode as it should. Is there any reason not to use auto iso in manual mode? Will experiment later today.
Though I’ve never had a reason to use auto ISO, I see no reason why you cannot. Wouldn’t mind owning that lens myself.
The auto ISO feature is a feature of your camera, not the lens. If your lens/camera combo work in aperture priority, then the Auto ISO feature should work as well.
"I’ve never had a reason to use auto ISO"
I was like you until I read Steve Perry's books. Auto ISO is one of those things that makes life so much easier, especially in rapidly changing light conditions. It is not suitable for flash photography. Give it a go, you might be surprised.
A 400mm prime lens, f3.5, in a Nikon ais series or even the latest model, is a big plus. Your camera is suited for it too. Using auto ISO is an option that DSLRs have today. It wasn't available on a Nikon SLR. If, you got a good deal on it, which I'm sure you did. You may be able to live without Auto ISO. But, I don't know why you can't use it? I had in my hands, a 400mm Canon "L" lens that a NFL pro photographer showed me a few years ago. But, it was f2.8, and pretty heavy as well. Enjoy your Nikon Legacy lens.
Thanks for all your input. Anxious to get out and use my old manual focus skills. Perhaps I’ll dust my F2as off as well
I use manual with auto ISO 95% of the time beause I like to choose the fstop/shutter speed. You can set the ISO limits on the low and high end.
There are times when auto ISO is not suitable and will raise the ISO to the limit you set, this usually happens in low light such as night photography or early or late evening photography. When this happens you will find more noise in your image than you want. I usually take it off auto ISO in the late evening or early morning and either lower my shutter speed or increase the aperture or both.
Brucej67 wrote:
There are times when auto ISO is not suitable and will raise the ISO to the limit you set, this usually happens in low light such as night photography or early or late evening photography. When this happens you will find more noise in your image than you want. I usually take it off auto ISO in the late evening or early morning and either lower my shutter speed or increase the aperture or both.
Bruce, your concern that Auto ISO can raise ISO to unacceptable levels has also been expressed by others in UHH discussions on Auto ISO.
But why turn Auto ISO off, when all you have to do is watch the ISO value selected by the camera. If it goes too high, you change shutter and/or aperture, or you abort. Depending on the type of photograph, supplemental lighting might also be an option. You still have total control, no?
If you leave one or more parameters for the camera to choose and not monitor it then there will be time it set those parameter to extreme that you don't want.
I want the auto ISO to raise when it's dark. That's the purpose of auto ISO. What choice do I have? Picture with high ISO or no picture.
John Sh wrote:
"I’ve never had a reason to use auto ISO"
I was like you until I read Steve Perry's books. Auto ISO is one of those things that makes life so much easier, especially in rapidly changing light conditions. It is not suitable for flash photography. Give it a go, you might be surprised.
I understand its purpose, and agree there are times when it can be useful. I tend to use a particular feature when the need arises, rather than to create a need just to use it.
rehess
Loc: South Bend, Indiana, USA
RWR wrote:
I understand its purpose, and agree there are times when it can be useful. I tend to use a particular feature when the need arises, rather than to create a need just to use it.
Pentax has a 'TAv' mode which they describe as being equivalent to 'M' mode with auto ISO. I don't have to contrive a need for it; I use it regularly when photographing wildlife, because it allows me to control both shutter speed and aperture while still keeping the 'exposure triangle' satisfied.
rehess wrote:
Pentax has a 'TAv' mode which they describe as being equivalent to 'M' mode with auto ISO. I don't have to contrive a need for it; I use it regularly when photographing wildlife, because it allows me to control both shutter speed and aperture while still keeping the 'exposure triangle' satisfied.
I’m pretty sure a situation will come up when I’ll be happy to use it.
htbrown
Loc: San Francisco Bay Area
Archiefamous wrote:
Is there any reason not to use auto iso in manual mode?
Doesn't that defeat the purpose of manual mode? Consider this scenario:
Photog takes a picture.
Photog: Hmm, that's too dark. I'll open up the aperture.
Camera: Hmm, that's going to be too light. I'll adjust the ISO.
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