How intelligent is IBIS?

Started 2 months ago | Discussions
Spoff New Member • Posts: 9
How intelligent is IBIS?

Hi,

Nice to see the IBIS that Canon has brought forth on the R5 and R6. I had a question as to how they usually implement this sort of thing. For instance, just say you are shooting with IS off at 80mm in AV mode and the camera picks a shutter speed of 1/80 at an ISO of 800. In the same situation with IS on, would the camera automatically determine that a lower ISO would be better, determine that a slower shutter speed would be the way to go, a combination of both, or is it totally up to the user at that point to change these settings (for instance lower in the ISO and slower in the shutter)?. Basically wondering how its intelligence works.

Thank you.

Canon EOS R5 Ricoh Caplio R6
If you believe there are incorrect tags, please send us this post using our feedback form.
D Cox Forum Pro • Posts: 26,954
Re: How intelligent is IBIS?
1

About as intelligent as an Amoeba.

 D Cox's gear list:D Cox's gear list
Sigma fp
pforsell
pforsell Veteran Member • Posts: 3,674
Re: How intelligent is IBIS?

D Cox wrote:

About as intelligent as an Amoeba.

I should think that much less intelligent than an amoeba.

http://www.aboutintelligence.co.uk/primitive-intelligence-evolution.html

-- hide signature --

Peter

 pforsell's gear list:pforsell's gear list
Nikon D1X Nikon D2X Nikon D3X Nikon D3S Nikon D4S +25 more
D Cox Forum Pro • Posts: 26,954
Re: How intelligent is IBIS?
1

pforsell wrote:

D Cox wrote:

About as intelligent as an Amoeba.

I should think that much less intelligent than an amoeba.

http://www.aboutintelligence.co.uk/primitive-intelligence-evolution.html

You're probably right. After all, you don't survive for billions of years without having your wits about you.

 D Cox's gear list:D Cox's gear list
Sigma fp
Euell Veteran Member • Posts: 4,532
Re: How intelligent is IBIS?

Spoff wrote:

Hi,

Nice to see the IBIS that Canon has brought forth on the R5 and R6. I had a question as to how they usually implement this sort of thing. For instance, just say you are shooting with IS off at 80mm in AV mode and the camera picks a shutter speed of 1/80 at an ISO of 800. In the same situation with IS on, would the camera automatically determine that a lower ISO would be better, determine that a slower shutter speed would be the way to go, a combination of both, or is it totally up to the user at that point to change these settings (for instance lower in the ISO and slower in the shutter)?. Basically wondering how its intelligence works.

Thank you.

It's a reasonable question. While I cannot speak to the Canon models you mention, a Sony A6500 does not consider whether the IBIS is on or off in determining shutter speed.

 Euell's gear list:Euell's gear list
Sony RX100 Canon EOS 7D Sony a6500 Sony a7R III Canon EF-S 17-55mm f/2.8 IS USM +13 more
bodeswell Regular Member • Posts: 259
Re: How intelligent is IBIS?

Spoff wrote:

Hi,

Nice to see the IBIS that Canon has brought forth on the R5 and R6. I had a question as to how they usually implement this sort of thing. For instance, just say you are shooting with IS off at 80mm in AV mode and the camera picks a shutter speed of 1/80 at an ISO of 800. In the same situation with IS on, would the camera automatically determine that a lower ISO would be better, determine that a slower shutter speed would be the way to go, a combination of both, or is it totally up to the user at that point to change these settings (for instance lower in the ISO and slower in the shutter)?. Basically wondering how its intelligence works.

Thank you.

"IBIS works by moving the sensor inside your camera in order to compensate for the camera movement." https://photographylife.com/understanding-ibis-nikon-mirrorless-cameras#:~:text=IBIS%20works%20by%20moving%20the%20sensor%20inside%20your,the%20sensor%20by%20moving%20it%20left%2Fright%20and%20up%2Fdown.

It doesn't have anything to do with shutter speed, etc.

 bodeswell's gear list:bodeswell's gear list
Canon EOS R Canon EOS 90D Canon EOS R5
D Cox Forum Pro • Posts: 26,954
Re: How intelligent is IBIS?

Euell wrote:

Spoff wrote:

Hi,

Nice to see the IBIS that Canon has brought forth on the R5 and R6. I had a question as to how they usually implement this sort of thing. For instance, just say you are shooting with IS off at 80mm in AV mode and the camera picks a shutter speed of 1/80 at an ISO of 800. In the same situation with IS on, would the camera automatically determine that a lower ISO would be better, determine that a slower shutter speed would be the way to go, a combination of both, or is it totally up to the user at that point to change these settings (for instance lower in the ISO and slower in the shutter)?. Basically wondering how its intelligence works.

Thank you.

It's a reasonable question. While I cannot speak to the Canon models you mention, a Sony A6500 does not consider whether the IBIS is on or off in determining shutter speed.

Logically, it will be the other way round. The shutter speed (and the focal length of the lens) should determine whether the IBIS is switched on or not.

 D Cox's gear list:D Cox's gear list
Sigma fp
Euell Veteran Member • Posts: 4,532
Re: How intelligent is IBIS?
1

D Cox wrote:

Euell wrote:

Spoff wrote:

Hi,

Nice to see the IBIS that Canon has brought forth on the R5 and R6. I had a question as to how they usually implement this sort of thing. For instance, just say you are shooting with IS off at 80mm in AV mode and the camera picks a shutter speed of 1/80 at an ISO of 800. In the same situation with IS on, would the camera automatically determine that a lower ISO would be better, determine that a slower shutter speed would be the way to go, a combination of both, or is it totally up to the user at that point to change these settings (for instance lower in the ISO and slower in the shutter)?. Basically wondering how its intelligence works.

Thank you.

It's a reasonable question. While I cannot speak to the Canon models you mention, a Sony A6500 does not consider whether the IBIS is on or off in determining shutter speed.

Logically, it will be the other way round. The shutter speed (and the focal length of the lens) should determine whether the IBIS is switched on or not.

IBIS is either turned on or off manually. It runs continually, when switched on, independent of shutter speed. Focal length must be known for it to work properly and for 5-axis correction focal distance must be reported.

 Euell's gear list:Euell's gear list
Sony RX100 Canon EOS 7D Sony a6500 Sony a7R III Canon EF-S 17-55mm f/2.8 IS USM +13 more
OP Spoff New Member • Posts: 9
Re: How intelligent is IBIS?

bodeswell wrote:

Spoff wrote:

Hi,

Nice to see the IBIS that Canon has brought forth on the R5 and R6. I had a question as to how they usually implement this sort of thing. For instance, just say you are shooting with IS off at 80mm in AV mode and the camera picks a shutter speed of 1/80 at an ISO of 800. In the same situation with IS on, would the camera automatically determine that a lower ISO would be better, determine that a slower shutter speed would be the way to go, a combination of both, or is it totally up to the user at that point to change these settings (for instance lower in the ISO and slower in the shutter)?. Basically wondering how its intelligence works.

Thank you.

"IBIS works by moving the sensor inside your camera in order to compensate for the camera movement." https://photographylife.com/understanding-ibis-nikon-mirrorless-cameras#:~:text=IBIS%20works%20by%20moving%20the%20sensor%20inside%20your,the%20sensor%20by%20moving%20it%20left%2Fright%20and%20up%2Fdown.

It doesn't have anything to do with shutter speed, etc.

Yes it works that way but I was just wondering as due to the fact that it is working does it then tell the camera you can use a slower shutter speed, lower ISO, etc. If it doesn't then it would be nice if it said how many stops you were getting out of it, so for instance if you were shooting inside at the shutter\aperture speeds for the exposure you wanted without IBIS, turning it on would say it is giving 4 stops of improvement so one could change the ISO from 1600 to 100 - that kind of thing. Maybe it doesn't and one just has to experiment to find out how much they are getting with each lens and then they just know they have additional flexibility when setting ISO and shutter speed going forward.

Or if one is in a situation without IBIS that would require a 1/80 second shutter speed at a chosen ISO, then when activated the camera would automatically know that the IBIS is giving a 4 stop improvement and then lower the ISO or shutter speed depending on options\preferences you have preset.

The question would also apply to automatic mode, which I don't use. Does the camera know it is getting some IBIS latitude and thus shoot with a lower ISO, smaller aperture, or slower shutter speed automatically?

bodeswell Regular Member • Posts: 259
Re: How intelligent is IBIS?

Spoff wrote:

bodeswell wrote:

Spoff wrote:

Hi,

Nice to see the IBIS that Canon has brought forth on the R5 and R6. I had a question as to how they usually implement this sort of thing. For instance, just say you are shooting with IS off at 80mm in AV mode and the camera picks a shutter speed of 1/80 at an ISO of 800. In the same situation with IS on, would the camera automatically determine that a lower ISO would be better, determine that a slower shutter speed would be the way to go, a combination of both, or is it totally up to the user at that point to change these settings (for instance lower in the ISO and slower in the shutter)?. Basically wondering how its intelligence works.

Thank you.

"IBIS works by moving the sensor inside your camera in order to compensate for the camera movement." https://photographylife.com/understanding-ibis-nikon-mirrorless-cameras#:~:text=IBIS%20works%20by%20moving%20the%20sensor%20inside%20your,the%20sensor%20by%20moving%20it%20left%2Fright%20and%20up%2Fdown.

It doesn't have anything to do with shutter speed, etc.

Yes it works that way but I was just wondering as due to the fact that it is working does it then tell the camera you can use a slower shutter speed, lower ISO, etc. If it doesn't then it would be nice if it said how many stops you were getting out of it, so for instance if you were shooting inside at the shutter\aperture speeds for the exposure you wanted without IBIS, turning it on would say it is giving 4 stops of improvement so one could change the ISO from 1600 to 100 - that kind of thing. Maybe it doesn't and one just has to experiment to find out how much they are getting with each lens and then they just know they have additional flexibility when setting ISO and shutter speed going forward.

Or if one is in a situation without IBIS that would require a 1/80 second shutter speed at a chosen ISO, then when activated the camera would automatically know that the IBIS is giving a 4 stop improvement and then lower the ISO or shutter speed depending on options\preferences you have preset.

The question would also apply to automatic mode, which I don't use. Does the camera know it is getting some IBIS latitude and thus shoot with a lower ISO, smaller aperture, or slower shutter speed automatically?

I don’t think so. The camera can measure light before you shoot and set shutter speed or aperture appropriately, but it can’t measure how steadily you will hold the camera in advance of the shot. IBIS tries to compensate for camera movement in real time.

 bodeswell's gear list:bodeswell's gear list
Canon EOS R Canon EOS 90D Canon EOS R5
OP Spoff New Member • Posts: 9
Re: How intelligent is IBIS?

bodeswell wrote:

Spoff wrote:

Yes it works that way but I was just wondering as due to the fact that it is working does it then tell the camera you can use a slower shutter speed, lower ISO, etc. If it doesn't then it would be nice if it said how many stops you were getting out of it, so for instance if you were shooting inside at the shutter\aperture speeds for the exposure you wanted without IBIS, turning it on would say it is giving 4 stops of improvement so one could change the ISO from 1600 to 100 - that kind of thing. Maybe it doesn't and one just has to experiment to find out how much they are getting with each lens and then they just know they have additional flexibility when setting ISO and shutter speed going forward.

Or if one is in a situation without IBIS that would require a 1/80 second shutter speed at a chosen ISO, then when activated the camera would automatically know that the IBIS is giving a 4 stop improvement and then lower the ISO or shutter speed depending on options\preferences you have preset.

The question would also apply to automatic mode, which I don't use. Does the camera know it is getting some IBIS latitude and thus shoot with a lower ISO, smaller aperture, or slower shutter speed automatically?

I don’t think so. The camera can measure light before you shoot and set shutter speed or aperture appropriately, but it can’t measure how steadily you will hold the camera in advance of the shot. IBIS tries to compensate for camera movement in real time.

Makes sense. I mean it could use some general rules like if it knows the lens and other things but if it did that depending on the person like you say it could under or over-compensate the settings adjustment. Oh well, it is not hard to remember, but I will need to come up with new "rules" for each lens with the R5, knowing what general shutter speeds I can get away with at different focal lengths. I had been going by the old general example of for instance with a 100mm lens I should use a shutter speed no slower than 1/100 without any IS, but that may be outdated anyway with these higher megapixel cameras.

Keyboard shortcuts:
FForum MMy threads