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Note: camera operators must complete the procedures for preparing herbarium specimens for digitization before completing these steps.
Note about equipment and file formats
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Camera option | Setting | Rationale |
|---|---|---|
| Compression | RAW + JPEG | The camera saves two files for each shot. The camera JPEG is only intended to support visual inspection during the digitization process. Normally the camera JPEG will be discarded and replaced with a JPEG derived from the master TIFF file that is produced from the camera RAW file. |
| ISO | ISO 100 | ISO 100 is the base ISO setting for the Canon T6i digital camera. The "base ISO" of DSLR cameras usually produces the camera's best signal-to-noise ratio and allows the sensor to achieve its full dynamic range. |
| Aperture | f/3.5 | A good default aperture is one or two steps above the lowest f-stop number (i.e., one or two steps below the widest lens opening) allowed by the lens. Depending on the lens this could fall between f/3.5 and f/5.6. The lowest f-stop number of the Canon EF-S 35mm f/2.8 macro IS STM lens is f/2.8, so the default is f/3.5. Some situations may require an aperture of f/4.0. |
| White balance | Auto white balance | White balance can be corrected in post-production. If post-production correction is not desired and the auto white balance setting produces unsatisfactory results, the Canon T6i camera can also be set to a daylight white balance setting if the shoot involves 5500 K lighting, or a white flourescent light white balance setting if the shoot involves standard flourescent lighting (4000 K). See colour temperature for more information. |
| Shutter speed | 1/80 | Could be 1/200 |
| Exposure compensation | 0 | |
| Metering mode | Evaluative metering mode |
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