SX60 auto focus problem at high zoom

[ojreichman]

At zoom levels approaching max. optical and into digital zoom the camera fails to auto-focus (but does so at zooms below 50X).  I’ve tried many of the permutations of focus settings, and read earlier posts relating to similar issues, but have not found a solution.  I have been working with plenty of light (ISO 200, shutter speed 1/250 and up, and within the aperture range of the camera).  

Suggestions?

Thanks...

[Waddizzle]

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@ojreichman wrote:

Waddizzle - any thoughts about the removal of the polarizer affecting the focus, other than just (just?) increasing the light a couple of stops?

Thanks,  Jim

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Many image sensors work by comparing contrast on different phases of light.  A polarizer removes out of phase light.  I have had a couple of DSLR lenses that did not like CPL of UV filters.  All I use now are CLEAR protective filters on lenses.



Suddenly, all of my colors improved.

[ojreichman]

Interesting, thanks again.

[dbhuff49]

Here's one I took @ full optical zoom mid day had held no filters.

[Grazie]

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@dbhuff49 wrote:
Here's one I took @ full optical zoom mid day had held no filters.

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Hi - I'd like to see it too? - Where is it?

Cheers

G

[Caribe]

That’s very interesting. I had my polarizing filter on as well when I experienced the auto focus “confusion”, as though not finding the subject to focus on and then settling for the blurry image.

[Caribe]

That’s very interesting. I had my polarizing filter on as well when I experienced the auto focus “confusion”, as though not finding the subject to focus on and then settling for the blurry image. I shoot boats on Caribbean waters and I love the polarizing affect, but at high zooms the auto focusing is hit or miss.

[Waddizzle]

At very long focal lengths, you need to hold the camera really steady for it to focus. Even better, use a tripod.

[Grazie]

SX60hs. Shot through green foliage. Blue London Skies. CircPola. Hand held. Chimneys 80 metres away. Auto Focus popped then shot. Look at the detail on the TV antenna, I can almost make out the threads on the Wing-nut bolts!