Double exposure (IBIS?) when shooting eclipse 7 shot bracket on TV = 1/60s and T=1/10s (EOS R5)

[mems2go]

Double exposure (IBIS?) when shooting eclipse 7 shot bracket on only 2 of 7 images  (TV = 1/60s and TV=1/10s).

Occurred on all bracket shots (over 50 bracketed shots) during eclipse totality 😞

R5 body, RF 100-500 lens, RRS Tripod set at lowest level to ground (very stable)

Firmware on R5 = v2.0

Bracket = 7, 4 stop range, ISO = 200, AV= f11, TV= 1/160s,  

Focus = manual, Image stabilization = off (lens switch)

5 of 7 shots are focused very sharp, but 2 of 7 images appear to be double exposed with slight movement in image (looks like pixel shift shenanigans, but this feature should have been off via camera lens setting)

TV = 1/160s, Bracket = 7, Stops = 4
10  - Double exposure
25
60  - Double exposure
160
400
1000
2500

[Waddizzle]

Was IS or IBIS enabled? 

How was the sequence started?

[p4pictures]

With IS switched off on the lens, then IBIS is also switched off and cannot be switched on from the camera menu.

What order was the bracketing sequence set to? From the custom functions page 1 this can be changed to either start from the most underexposed or from the most overexposed.

By default the camera shoots the "correct" or mid exposure first, then the most underexposed, works through to the most overexposed. So for your sequence this would be the 1/160, 1/2500, 1/1000, 1/400, 1/60, 1/25 and finally 1/10. 

It does seem odd that only the 1/60 and 1/10 images exhibit the phenomenon. Which shutter mode was being used, mechanical, 1st curtain electronic or electronic?

Perhaps it is best to share some example images?

[mems2go]

1) Mechanical shutter setting

2) 2 second timer delay

3) Wireless remote (Canon RC-6)Clear exposure, 1/160sIBIS Exposure?, 1/60s

[mems2go]

Look at the red solar prominence on bottom of each JPEG...

Original files are RAW CR3 format

[mems2go]

1/25s is clear, while 1/10s is double exposed (similar to 1/60s)

[Waddizzle]

Yes, the images seem like they need closer inspection.  Unfortunate.

If you wish someone to help you, then help someone to help you.  Please try to answer the questions that have been raised.

[mems2go]

All this information was included in original post:

RF 100-500 Lens settings: Manual Focus = on, Stabilization = off (so IBIS should be off on R5 body)

R5 Settings: Bracket = 7, Bracket sequence = (- 0 +), TV = 1/160s, F = 11, ISO = 200, Shutter Delay = 2s

R5 Mode = Manual (copied manual settings to Custom Shooting Menu C3)

Canon Wireless Remote (RC-6)

(See attached pic shot from 2017 on 5D_mkIV and EF 100-400 with 1,4 TC)

[mems2go]

Does anyone have any idea why 2 of 7 bracketed images appear to have double exposures?

(as if IBIS turned on, but stabilization button on RF 100-500 lens was set to OFF position)...

[Waddizzle]

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@mems2go wrote:

Does anyone have any idea why 2 of 7 bracketed images appear to have double exposures?

(as if IBIS turned on, but stabilization button on RF 100-500 lens was set to OFF position)...

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Thanks, for letting us know that IBIS and AF were both turned off.

I think that it would be highly unusual for a double exposure to occur in seemingly one small area of an image.  This could be a lens filter artifact or a vibration.  Even the image that seems to not suffer from a double exposure seems to have a similar issue, except that it is perpendicular to the one with the larger artifact.