I can definitely see the benefit shooting wildlife because the lighting conditions change constantly in heavily to lightly vegetated areas. I'm constantly having to adjust my ISO to compensate and obtain proper shutter speeds. Exposure I can handle based on lighting condiions and subject color but auto ISO would be beneficial in assuring I had adequate shutter speeds. I prefer to shoot AV to have complete control of DOF.
I have used a handheld light meter for 35 years and shot with a manual camera during that time. I don't mind a little automation to help out and plan on giving the auto ISO function a go now that I have the 1DMKIII. We will see how much it helps or hinders wildlife shooting this weekend.
Interesting observation................
Limited my ISO speed range in C.Fn 1-3 to ISO 100-800.
Now I can only manually set ISO 100-800 on my Mk 3.
However when I turn on C.Fn 1-8 to #2 (enable ISO safety shift),
the camera will shift my ISO all the way up to 3200 even if I want it
limited to ISO 800. I cannot limit the range of ISO shift I get with
the safety shift function. This is a drag.
Also the safety shift function cuts your maximum burst rate in third,
from >99 jpeg shots with it off, to ~32 shots with it on.
So I added safety shift to My Menu Functions and keep it turned off
unless I really need it and do not mind having my burst capacity crippled.
realmunseen wrote:
Interesting observation................
Limited my ISO speed range in C.Fn 1-3 to ISO 100-800.
Now I can only manually set ISO 100-800 on my Mk 3.
However when I turn on C.Fn 1-8 to #2 (enable ISO safety shift),
the camera will shift my ISO all the way up to 3200 even if I want it
limited to ISO 800. I cannot limit the range of ISO shift I get with
the safety shift function. This is a drag.
Also the safety shift function cuts your maximum burst rate in third,
from >99 jpeg shots with it off, to ~32 shots with it on.
So I added safety shift to My Menu Functions and keep it turned off
unless I really need it and do not mind having my burst capacity crippled....Show more →
I'm really glad that there's not just me reporting on this feature, because obviously I haven't caught everything and even gave out false info, well, actually I made an assumption about ISO limits with safety shift based on limited experimentation using ISO limits in Manual mode (which work) and assuming they worked the same as safety shift w/ AV mode.
All I can do is apologise. And thank you for the correction. But I also think this is an important enough post to repost over on the "hands-on thread", but I'll let realmunseen be the judge of that.
I also feel bad about the decrease in burst rate, which I was not testing at all in conjuction. I feel bad mainly because it is a serious performance hit to the whole notion of ISO shift in the exact instances where you need the speed.
One question on this though: Can you get the burst rate back if we merely hold down the AE lock * button while shooting a burst? The ISO would shift initially and then stay locked in. You could also do this by setting the shutter button to AE lock as I have done CF IV-1-3.
Fred Miranda wrote:
Please let’s not make personal attacks.. How about discussing objectively the usage of shifts and limits...
Some may believe that the experienced photographer may not need this or that professionals will be always shooting in manual mode. I believe lots of wedding and photojournalists will welcome ISO shift and mode limitations.
Yeah, play nice.
And how can I be a Luddite with a 1D3? Thank you BTW, Luddites were artists.
realmunseen wrote:
Interesting observation................
Limited my ISO speed range in C.Fn 1-3 to ISO 100-800.
Now I can only manually set ISO 100-800 on my Mk 3.
However when I turn on C.Fn 1-8 to #2 (enable ISO safety shift),
the camera will shift my ISO all the way up to 3200 even if I want it
limited to ISO 800. I cannot limit the range of ISO shift I get with
the safety shift function. This is a drag..
It's definitely something to get used to. We like to be in control and when the camera feels like pushing ISO to 3200, it gets a little frustrating. At least it stops short of 6400!
So I added safety shift to My Menu Functions and keep it turned off
unless I really need it and do not mind having my burst capacity crippled
That is probably the best compromise. Send the function to My Menu and have it disabled until you need it. Like that you enjoy the nice buffer and the control to turn it back on whenever needed.
