topic Re: EOS R5 IBIS and tracking strangeness in EOS DSLR & Mirrorless Cameras

EOS R5 IBIS and tracking strangeness

johnrmoyer — Sun, 30 Mar 2025 18:30:21 GMT

EOS R5 IBIS and animal eye tracking strangeness. The beak of the woodpecker was moving, but instead of a blur, there is a double exposure.

Downy Woodpecker (Dryobates pubescens) in Norman, Oklahoma, United States on March 26, 2025 ; EF100-400mm f/4.5-5.6L IS II USM +1.4x III ; 1/640 ; F/11 ; 560 mm

Re: EOS R5 IBIS and tracking strangeness

Waddizzle — Sun, 30 Mar 2025 22:16:35 GMT

That’s very odd. You would not think that a double exposure would happen on such a limited area. Do you think that you could have captured an image of a bird with a genetic deformity?

Re: EOS R5 IBIS and tracking strangeness

johnrmoyer — Sun, 30 Mar 2025 22:54:15 GMT

@Waddizzle wrote:

That’s very odd. You would not think that a double exposure would happen on such a limited area. Do you think that you could have captured an image of a bird with a genetic deformity?

No. The bird was normal. Other photos of the same bird have the expected blur.

Re: EOS R5 IBIS and tracking strangeness

Waddizzle — Mon, 31 Mar 2025 21:06:34 GMT

My best guess is that the little fella twitched and turned its head just as the shutter was firing. The camera must have caught it just right.

Re: EOS R5 IBIS and tracking strangeness

johnrmoyer — Tue, 01 Apr 2025 01:05:51 GMT

@Waddizzle wrote:

My best guess is that the little fella twitched and turned its head just as the shutter was firing. The camera must have caught it just right.

I think you are correct. Exposed twice first in one position on one part of the sensor and then in another position on another part of the sensor. They move quickly.