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Aps-h (apsh)
| Lens Glossary |
Aps-h format imaging sensors (1.3x) are smaller than full-frame (24 x 36mm) imaging sensors but larger than aps-c (1.5x) imaging sensors. although currently only available in canon’s high-speed 1d series (not 1ds) cameras, aps-h format sensors were also used in leica’s first digital rangefinder, the m8, as well as leica’s short-lived add-on digital back for the now-discontinued leica r reflex camera system.
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Rangefinder, английский
- The viewfinder on most cameras is a separate viewing device that is independent of the lens. often mounted above and to the right or left of the lens. it exhibits a problem known as parallax when trying to frame subjects closer than five feet from the camera so it is advisable to use the color lcd when shooting closeups for this very reason.
- This is the viewfinder on most smaller digital cameras and is a separate viewing device which is independent of the lens. it is often above and to the right or left of the lens. it exhibits a problem known as parallax when trying to frame subjects closer than five feet from the camera so it is advisable to use the colour lcd when shooting close-ups for just this reason.
Discontinued, английский
Прерванный
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Average metering, английский
Average metering takes all of the light values for a given scene—highlights, shadows, and mid-tones—and averages them together to establish an overall exposure. average metering is best used for front-lit subjects under average lighting conditions. backlit subjects tend to be silhouetted when metered in average mode. for more on this subject, see the explora article, “understanding camera metering modes.”
Pincushion distortion, английский
- An optical distortion, common in less expensive lenses, where parallel lines on the horizontal or vertical plane bow inward. pincushion distortion is the opposite of barrel distortion.
- Подушкообразная или положительная дисторсия (дисторсия, связанная с увеличением изображения у краев поля, большим, чем в центре поля)
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