Bokeh quality of 70-200/2.8 IS versions (I vs II) ?

msowsun wrote in post #11122213
Crop

Very interesting.
The lens looks over-corrected for spherical aberration.
Notice that the focus distance is higher than in other shots not showing this issue.

The 24-105 shows similar behavior, and this is one of the reasons why I prefer the 24-70.

It would be very interesting to compare I and II with problematic shots like this.

70-200 f/2.8L IS (MkI) on a 350D

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70-200 f2.8 IS mark I version at f3.2 and f2.8:

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Well you start to see the busy bokeh even in the picture with bicycles in a row. Look near the top right corner. Clustered small objects like in a foliage at certain size and distance might show the same busy bokeh. I wonder if someone having both Mark I and Mark II would go deeper. Finding a scenario where Mark II shows busy bokeh wide open and take a shot with both lenses with as similar settings and conditions as possible. No more guessing.

Remember..

The IS system when active will affect the bokeh. The mkII has a more effective Is system (4 vs 2 stops) and most likely will affect the bokeh more when pushed.

This will be hard to measure or even test, but then you will get sharper shots when needing those 4 stops than if you didnt have IS on...

I know this is an old thread, but I've been actually happy with the MK II version.

RobDickinson wrote in post #13606891
Remember..

The IS system when active will affect the bokeh. The mkII has a more effective Is system (4 vs 2 stops) and most likely will affect the bokeh more when pushed.

This will be hard to measure or even test, but then you will get sharper shots when needing those 4 stops than if you didnt have IS on...

Using a tripod is mandatory and the shots can be taken without IS.