Auto IBIS

[jplomley]

Advertisement (gone after registration)

Any reason there is no Auto IBIS on the SL2?  At shutter speeds 1/2f or greater, I’ve noticed image quality deterioration with IBIS on. It is a pain to have to toggle IBIS as a function of shutter speed. Ideally, with Auto IBIS, stabilization would kick in at shutter speeds less than or equal to 1/f. This cannot be that difficult to implement. 

[jaapv]

Except that those values differ with the steadiness of the hand of the pohographer.

[AKorenc]

1 hour ago, jplomley said:

Any reason there is no Auto IBIS on the SL2?  ... This cannot be that difficult to implement. 

Agreed, it really should not be difficult to implement - and it's not, because exactly this is a great new feature na Q2.

Edited December 7, 2020 by AKorenc

[jplomley]

1 hour ago, jaapv said:

Except that those values differ with the steadiness of the hand of the pohographer.

Right, so you would specify at what shutter speed below which IBIS would kick in. Absolute, or as a function of specific focal length. 

[AKorenc]

1 hour ago, jaapv said:

Except that those values differ with the steadiness of the hand of the pohographer.

Like stated above, the Q2 has this feature. It mostly depends on the focal length of the lens attached, not so much photographer's abilities to hold the camera steady.

It should be pretty simple; Auto IBIS would be on with shutter times between 1s and 1/500s with it only being on in this range when the shutter time does not exceed double the focal length.

Example; when using a 50mm lens, the IBIS would be turned on with shutter times between 1s and 1/100s, when using a 200mm lens in the range 1s-1/400s and so on ... that would be awesome, but I think Q2 is the only camera on the market having this feature.

Edited December 7, 2020 by AKorenc

[jplomley]

4 hours ago, AKorenc said:

Like stated above, the Q2 has this feature. It mostly depends on the focal length of the lens attached, not so much photographer's abilities to hold the camera steady.

It should be pretty simple; Auto IBIS would be on with shutter times between 1s and 1/500s with it only being on in this range when the shutter time does not exceed double the focal length.

Example; when using a 50mm lens, the IBIS would be turned on with shutter times between 1s and 1/100s, when using a 200mm lens in the range 1s-1/400s and so on ... that would be awesome, but I think Q2 is the only camera on the market having this feature.

Great, so Leica has the experience with the algorithms to do this. Should be a no brainer to incorporate into the SL2 then! Sure would save a lot of fiddling about.

[panoreserve]

Advertisement (gone after registration)

vor 11 Stunden schrieb jplomley:

Any reason there is no Auto IBIS on the SL2?  At shutter speeds 1/2f or greater, I’ve noticed image quality deterioration with IBIS on. It is a pain to have to toggle IBIS as a function of shutter speed. Ideally, with Auto IBIS, stabilization would kick in at shutter speeds less than or equal to 1/f. This cannot be that difficult to implement. 

I recommend using SL2’s electronic shutter. Thus the above-mentioned „deterioration with IBIS on“ can be avoided. SL2’s mechanical shutter (esp. in the range of 1/60-1/200 sec.)  seems to impact image quality (a kind of „shutter shock“?).

Btw: The implementation of „Auto-IBIS“ in the Q2 has another technical background due to the OIS, which, according to LEICA, deteriorates the maximum (esp. wide angle-) lens-performance to a minor degree...

[michali]

4 minutes ago, panoreserve said:

I recommend using SL2’s electronic shutter. Thus the above-mentioned „deterioration with IBIS on“ can be avoided. SL2’s mechanical shutter (esp. in the range of 1/60-1/200 sec.)  seems to impact image quality (a kind of „shutter shock“?).

Btw: The implementation of „Auto-IBIS“ in the Q2 has another technical background due to the OIS, which, according to LEICA, deteriorates the maximum (esp. wide angle-) lens-performance to a minor degree...

Agree. I've taken to using the Electronic shutter more & more especially with long lenses. I had experienced similar issues during my several months with the S1R, which were even more pronounced than the SL2. 

[panoreserve]

vor einer Stunde schrieb panoreserve:

I recommend using SL2’s electronic shutter. Thus the above-mentioned „deterioration with IBIS on“ can be avoided. SL2’s mechanical shutter (esp. in the range of 1/60-1/200 sec.)  seems to impact image quality (a kind of „shutter shock“?).

Btw: The implementation of „Auto-IBIS“ in the Q2 has another technical background due to the OIS, which, according to LEICA, deteriorates the maximum (esp. wide angle-) lens-performance to a minor degree...

I recommend using SL2’s electronic shutter. Thus the above-mentioned „deterioration with IBIS on“ can be avoided. SL2’s mechanical shutter (esp. in the range of 1/60-1/200 sec.)  seems to impact image quality (a kind of „shutter shock“?). Addendum: I should have said more precisely:  "a kind of adverse combination of two mechanical phenomena: 'shutter shock' (= mechanical shutter) and 'sensor movement' (=IBIS)". When choosing the electronic shutter IBIS works flawlessly.

Btw: The implementation of „Auto-IBIS“ in the Q2 has another technical background due to the OIS, which, according to LEICA, deteriorates the maximum (esp. wide angle-) lens-performance to a minor degree...Addendum: so LEICA suggests using Q2's stabilisation-mode (OIS) only if really necessary  (longer shutter speeds under low light conditions).

[Photoworks]

The electronic shatter introduces many problems. 1st is the fact that you still get Rolling shatter a problem that many people in video worlds have to deal with.

 

Second you get a problem with LED lighting that causes bending in the image due to different frequencies. This is mostly indoors, but there are many outdoor street lights that are starting to use it.

In my opinion, the image stabilization system is actually welcome on any shutter speed because even if you have a long lens in a fast shutter speed, you will be able to focus and view the image so much easier.

 

The Q2 has central shudder in the lens. 

[michali]

1 hour ago, Photoworks said:

The electronic shatter introduces many problems.  1st is the fact that you still get Rolling shatter a problem that many people in video worlds have to deal with.

 

Second you get a problem with LED lighting that causes bending in the image due to different frequencies. This is mostly indoors, but there are many outdoor street lights that are starting to use it.

In my opinion, the image stabilization system is actually welcome on any shutter speed because even if you have a long lens in a fast shutter speed, you will be able to focus and view the image so much easier.

 

The Q2 has central shudder in the lens. 

Yes it does introduce problems under some lighting conditions, not all lighting conditions. This all depends on the type of photography & shooting environment. In my case I'm photographing mainly wildlife outdoors & have not encountered any issues. 

[panoreserve]

vor 3 Stunden schrieb Photoworks:

The electronic shatter introduces many problems. 1st is the fact that you still get Rolling shatter a problem that many people in video worlds have to deal with.

 

Second you get a problem with LED lighting that causes bending in the image due to different frequencies. This is mostly indoors, but there are many outdoor street lights that are starting to use it.

(...)

These issues are well enough known. But in case of my SLs/SL2s and my photography (Street/Portraiture) that did never happen - since 2016 until now...maybe I'm a lucky fellow😇.