nerd porcelain test tiles grouped by iron content.
these are talc tests supplied by nerd, grouped by iron levels. The groupings mean that bars in a group have generally similar levels of iron to other bars in that group.
Photo Information
- Taken with Apple iPhone 6 Plus
- Focal Length 4.2 mm
- Exposure Time 1/17
- f Aperture f/2.2
- ISO Speed 40
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