Jewett, Jr, , Page 808-809, Part 27 No amount of post-processing can fix poor lighting
On one hand you need to be familiar with the features and , to assess the impact of lights on the final result; on the other hand you need to get creative and play around with the to render form, mood and drama to the capture Sadiku, , Page 60-63, Part 2

ما هي وحدة قياس الاستضاءة تفاصيل وحدة قياس الضوء

8:1 ratio: Results in very dramatic and low key image.

21
شدة الاضاءة ووحدة قياسها
A proper balance can clearly bring out the contours and features of the subject while reducing undesirable shadows
الدرس الأول: التعريف بواحدات قياس الفيض الضوئي وشدة الضوء والتحويل بينها
, , Page 811-814, Part 27
شدة الاضاءة ووحدة قياسها
Varying the distance is not a means to control the light or exposure, it is a way to balance multiple lights sources
RASHID, , Page 539-540, Part 23 1:1 ratio: The key light and fill light of same intensity result in even lighting, thus producing soft high key image
The photographer takes the reading of light intensity from each light source and thereafter adjust the intensity of light for each source to effectively put lighting ratios to action Lighting Ratio A lighting ratio is simply the ratio or a balance between the intensity of two different lights

جهاز قياس شدة الإضاءة

As the distance is doubled, the light spreads farther and a larger area is required to absorb the same quantity of light.

16
ما هي وحدة قياس الاستضاءة تفاصيل وحدة قياس الضوء
The light rays in orange emanate from the source and fall on the card
شمعة (وحدة قياس)
A light ratio of 3:1 is desirable for
ما هي وحدة قياس الاستضاءة تفاصيل وحدة قياس الضوء
A strong key light and a weak fill light means a more contrasty image and vice-versa
The correct lighting setup can help you get astonishing results and a poor setup can totally ruin the shot The difference between the intensity of key light and fill light is calculated with respect to f-stops
But varying the distance affects the quality of light too To calculate and arrive at the desired lighting ratio, the photographers may seek the help of a but in practice it is generally a matter of individual preference and some experimentation

شدة الاضاءة ووحدة قياسها

RASHID, , Page 223, Part 13.

4
الدرس الأول: التعريف بواحدات قياس الفيض الضوئي وشدة الضوء والتحويل بينها
In a situation where the key light is absent and only a fill light is used, the portraits tend to appear flat
الدرس الأول: التعريف بواحدات قياس الفيض الضوئي وشدة الضوء والتحويل بينها
Additionally as a corollary, as the distance between the light source and subject increases, the apparent size of the source decreases
قياسات شدة الإضاءة
Since the size of the subject is fixed, it only absorbs a a part of the light it originally did