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William Wood | profile | all galleries >> Galleries >> Focus Test Charts tree view | thumbnails | slideshow

Focus Test Charts

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Test Chart - Front View
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Test Chart - Front View

 Test Chart - Angle View
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Test Chart - Angle View

 Test Chart - Side View
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Test Chart - Side View

 70-200/2.8L @ 200mm/f2.8
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70-200/2.8L @ 200mm/f2.8
50/1.4 @ 50mm/f1.4
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50/1.4 @ 50mm/f1.4

 24-70L @ 70mm/f2.8
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24-70L @ 70mm/f2.8

 70-200@200mm f/2.8 Poon's original test chart Slight backfocus
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70-200@200mm f/2.8
Poon's original test chart
Slight backfocus

 70-200@200mm f/2.8 Poon's improved chart before cutting Still slight BF
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70-200@200mm f/2.8
Poon's improved chart before cutting
Still slight BF
70-200@200mm f/2.8 Poon's improved chart with cutout target line Perfect results
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70-200@200mm f/2.8
Poon's improved chart with cutout target line
Perfect results

 70-200@200mm f/2.8 My test chart re-tested today Near perfect results
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70-200@200mm f/2.8
My test chart re-tested today
Near perfect results

 24-70L @ 70mm/2.8 Distance to target about 3 feet. Focus point on middle jar. Note that there is more DOF to the rear which is to be expected.
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24-70L @ 70mm/2.8
Distance to target about 3 feet. Focus point on middle jar.
Note that there is more DOF to the rear which is to be expected.

 24-70L @ 70mm/2.8 Distance to target about 2.5 feet; focus point on center jar. The DOF decreases as the target gets closer but there is still more DOF to the rear.
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24-70L @ 70mm/2.8
Distance to target about 2.5 feet; focus point on center jar.
The DOF decreases as the target gets closer but there is still more DOF to the rear.
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