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So, are we forced to conclude that a real implementation of auto iso is under license to Pentax?
I would say that a real auto iso program would be the thing that could make me upgrade the most.
In so many situations it would help you on the fly.
What do you think?
Morten
I am with you. Canon packed the 7D with many substantial improvements but missed that one.
No ISO-shifting . With Canon, pressing the ISO button resets the light measurement: aperture and shutter time disapear from the viewfinder and the EV scale turns into FEC scale (because ISO and FEC are combined in a same button). With Pentax changing ISO is just like changing aperture or shutter time. The light measurement is preserved and you see the effect of the ISO change in the viewfinder in real-time. Changing ISO in Av shifts the ISO - shutter time balance; in Tv it shifts the ISO - aperture balance and in M it shifts the ISO - EV balance. Intuitive, usefull, great.
Pentax also has an Sv shooting mode ("Sensibility value"), which is basically a P mode with ISO-shifting (you choose the ISO value and the camera picks aperture and shutter time). By the way: their P-mode is itself customizable (it can be biased towards shallow DoF, fast shutter time or optimal lens MTF).
No Auto-ISO in M . With Canon, Auto-ISO reverts to ISO-400 in the Manual shooting mode. Pentax has a TAv shooting mode, which is basically a Manual mode with Auto-ISO: you set aperture and shutter time and the camera pics the ISO. You can even set an exposure compensation for this shooting mode. Easy, usefull, great.
No Auto-ISO with flash . With Canon, Auto-ISO reverts to ISO-400 when you use flash. I am not sure about what Pentax does here but I don't understand why Canon don't preserve the Auto-ISO functionality of P, Av and Tv modes when your turn the flash on. And with lenses that inform focal lenght and focusing distance it should be possible to implement a much better solution.
Auto-ISO range is not customizable . Canon decided that ISO 100 - 1600 is always good for you. With Pentax you can set the limits yourself and any value can be set as low or high limit. It can't be so difficult to implement that. Why is that usefull? If you don't want the camera to go higher than ISO-800, you can set it so. And if you are in a night event you can let the camera go up to ISO 12500 and it will pick a lower ISO whenever possible.
What about Auto-ISO override? It would be nice if you could shift the ISO proposed by the camera when Auto-ISO is active. The shifted value would be preserved for several shoots in a burst and the camera would revert back to Auto-ISO afterwards. Pressing the ISO-button between shoots (when no light measurement is active) would allow you to leave Auto-ISO.
Just some suggestions. I hope there is somebody from Canon reading this.
Regards, Anonimo
So, are we forced to conclude that a real implementation of auto iso is under license to Pentax?
I would say that a real auto iso program would be the thing that could make me upgrade the most.
In so many situations it would help you on the fly.
What do you think?
Morten
I am surprised that a lot of the customization features, like ISO shift, from the 1D series were left out of the 7D. I guess they are still trying to protect the 1D series.I am glad for your comment, LongZoom. This thread was starting to read as if no Canon cameras had auto ISO shift. As you note, the Canon 1D series of cameras have this feature (at least my 1Dm3 has this feature).
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They did finally fix this with the 7DNo Auto-ISO in M . With Canon, Auto-ISO reverts to ISO-400 in the Manual shooting mode. Pentax has a TAv shooting mode, which is basically a Manual mode with Auto-ISO: you set aperture and shutter time and the camera pics the ISO. You can even set an exposure compensation for this shooting mode. Easy, usefull, great.
they did at least expand it to ISO3200 now (for RAW this is not terrible as higher iso RAW is all fake anyway), for jpg it is a limitation thoughAuto-ISO range is not customizable . Canon decided that ISO 100 - 1600 is always good for you. With Pentax you can set the limits yourself and any value can be set as low or high limit. It can't be so difficult to implement that. Why is that usefull? If you don't want the camera to go higher than ISO-800, you can set it so. And if you are in a night event you can let the camera go up to ISO 12500 and it will pick a lower ISO whenever possible.
They did finally fix this with the 7DNo Auto-ISO in M . With Canon, Auto-ISO reverts to ISO-400 in the Manual shooting mode. Pentax has a TAv shooting mode, which is basically a Manual mode with Auto-ISO: you set aperture and shutter time and the camera pics the ISO. You can even set an exposure compensation for this shooting mode. Easy, usefull, great.
they did at least expand it to ISO3200 now (for RAW this is not terrible as higher iso RAW is all fake anyway), for jpg it is a limitation thoughAuto-ISO range is not customizable . Canon decided that ISO 100 - 1600 is always good for you. With Pentax you can set the limits yourself and any value can be set as low or high limit. It can't be so difficult to implement that. Why is that usefull? If you don't want the camera to go higher than ISO-800, you can set it so. And if you are in a night event you can let the camera go up to ISO 12500 and it will pick a lower ISO whenever possible.
more critical is there is now way to set EC along with AutoISO in M mode.
Hi ghead!I d add one thing that I wish for:
adjsutable auto-ISO in Av. that is I can dial in a factor that would be multiplied to the 1/focal length value. if I have a IS lense, I could dial it to say 3/2 or 2, or 5/2 or 3, so say for an 200mm, I can do for example 1/100 shutter speed with a factor setting of 2.
then if I m shooting fast moving object, I d dial in 1/2 or 1/3 or 1/4 for example.
