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| 19-Jun-2023 | |
This is a 10.3 inch wide element from a large Kodak Ektar lens.
It is composed of a good portion of thorium oxide in the glass
this oxide was a precursor to modern ED glass in that it changed
the dispersive properties of the glass.
The reading on the Geiger counter is 0.1 mRems per hour.
| Full EXIF Info | |
| Date/Time | 19-Jun-2023 10:37:44 |
| Make | Olympus |
| Model | E-M1MarkII |
| Flash Used | No |
| Focal Length | 35 mm |
| Exposure Time | 1/20 sec |
| Aperture | f/3.5 |
| ISO Equivalent | 1250 |
| Exposure Bias | 0.00 |
| White Balance | 0 |
| Metering Mode | center weighted (2) |
| JPEG Quality | |
| Exposure Program | aperture priority (3) |
| Focus Distance | 1.575 m |
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