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Forums > Back > next OL lens test - Viltrox AF 20mm f/2.8 FE
#6
The focus field is rarely 100% flat. You won't even notice this with most lenses, so it doesn't make sense to add a note about it or create a dedicated flat-field MTF chart.
Usually, I only do this if I notice something unusual when using the lens out there or if it's crystal clear during the formal testing.
Chief Editor - opticallimits.com

Doing all things Canon, MFT, Sony and Fuji
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RE: next OL lens test - Viltrox AF 20mm f/2.8 FE - by Klaus - 11-28-2023, 07:39 AM

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