Question 3
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(a) List any three software used in digital photography.
(b) State any six differences between digital and analogue cameras.
Observation
The question was on digital photography. Most of the candidates attempted this question very well. The candidates were expected to answer the question with the following points:
(a)
- Adobe photoshop express |
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- Cyberlink photodirector |
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- Corel-paint shop, |
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(b) Differences between digital and analogue camera.
S/N |
DIGITAL CAMERA |
ANALOGUE CAMERA |
1 |
It uses sensor. |
It makes use of film. |
2 |
It enables immediate preview of image through the LCD. |
No image preview until after film development and there is no LCD. |
3 |
Captured images can be stored in digital camera or the memory card. |
Images from an analogue camera remains in the film until the negative is processed. |
4 |
Digital images are processed with image editing software. |
Films in analogue camera are processed with chemicals. |
5 |
Digital images can be transmitted/distributed electronically, from the camera. |
Prints from analogue camera can only be shared as hard copies. |
6 |
Digital camera cannot operate without battery. |
Many models of analogue camera can operate without batteries. |
7 |
Images taken by digital camera comes with embedded information in the properties. |
No embedded information with hard copies in analogue camera. |
8 |
Exposure errors can be discovered immediately through previews and new picture taken. |
Exposure errors can only be detected after the film has been processed into a negative |
9 |
Memory card on which images are stored can be re-used after deleting of old images. |
Negative cannot be used to store new photograph from another film. |
10 |
Direct printing from a digital camera is possible |
No direct printing from an analogue camera as the film goes through some processing before printing |
11 |
In-camera image editing is possible with a digital camera. |
Image editing not possible on an analogue camera. |
12 |
Several exposures of digital images can be stored in the memory card at a time depending on the card capacity. |
The maximum storage in an analogue film is 36 exposures. |
13 |
Digital cameras do not have any opening at the back. |
The back of an analogue camera is designed to open for film loading. |
14 |
Some digital cameras come with video recording facility. |
Video recording is not possible with analogue film camera. |