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Forums > Back > Testins IBIS
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First round of tests done. Procedure: exposure: using zebra; drive mode: single shot, roughly one shot per second; ten shots per each set; pre-focused only once at the beginning.

Subject at roughly 5 m (IS0 100 fixed, changing aperture from ƒ/2.8-9-18 since it's in the shadow), percentages of sharp shots:

1/800: 100%/100% (IBIS on/off)
1/80: 80%/40%
1/20: 70%/0%

Subject at roughly 1000 m (ISO 100 and 50, changing aperture from ƒ/4-11-22 since it's in the sunlight):

1/1250: 100%/100% (IBIS on/off)
1/80: 70%/50%
1/20: 40%/20%

Of course in evaluating sharpness I focused on motion blur, since absolute sharpness varied because of diffraction when stopping down a lot. I'll try to redo the test in more homogeneous conditions, but I think it's enough to prove my IBIS isn't broken. At this point it probably makes sense to refine the test to have a rough estimate of the actual stops gained.
stoppingdown.net

 

Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2 
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Messages In This Thread
Testins IBIS - by stoppingdown - 06-06-2022, 07:54 AM
RE: Testins IBIS - by toni-a - 06-06-2022, 04:44 PM
RE: Testins IBIS - by wim - 06-06-2022, 04:54 PM
RE: Testins IBIS - by stoppingdown - 06-06-2022, 05:37 PM
RE: Testins IBIS - by wim - 06-07-2022, 08:27 AM
RE: Testins IBIS - by stoppingdown - 06-07-2022, 10:59 AM
RE: Testins IBIS - by Klaus - 06-07-2022, 11:30 AM
RE: Testins IBIS - by stoppingdown - 06-07-2022, 12:25 PM
RE: Testins IBIS - by wim - 06-08-2022, 06:05 PM
RE: Testins IBIS - by stoppingdown - 06-08-2022, 06:37 PM
RE: Testins IBIS - by toni-a - 06-08-2022, 08:52 PM
RE: Testins IBIS - by Klaus - 06-08-2022, 11:56 PM
RE: Testins IBIS - by toni-a - 06-09-2022, 06:24 AM
RE: Testins IBIS - by Klaus - 06-09-2022, 08:50 AM
RE: Testins IBIS - by thxbb12 - 06-09-2022, 10:02 AM
RE: Testins IBIS - by toni-a - 06-09-2022, 10:26 AM
RE: Testins IBIS - by stoppingdown - 06-09-2022, 11:45 AM
RE: Testins IBIS - by wim - 06-10-2022, 04:13 PM

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