General Awareness

Photography Techniques and Settings

1,591 Questions

Understanding photography techniques requires knowledge of the exposure triangle, which includes aperture, shutter speed, and ISO. Key concepts also involve depth of field, high dynamic range imaging, and equipment differences. These questions are useful for visual arts, journalism, and hobbyist certification assessments.

Exposure triangleDepth of fieldHDR photographyPortrait lighting controlsDSLR vs mirrorless cameras

Photography Techniques and Settings Questions

Multiple choice

Focussing in a camera is carried out by varying ______.

  1. the amount of light

  2. distance of the lens from the screen

  3. distance of the lens from the object

  4. the speed of the shutter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a camera, focusing adjusts the lens-to-sensor distance to satisfy the lens equation 1/f = 1/u + 1/v. The lens must be positioned so that the image forms precisely on the sensor/film. Moving the lens changes the image distance to achieve sharp focus at different object distances.

Multiple choice

Which of the following is not a characteristic of an image in a pinhole camera?

  1. Image in the pinhole camera is always smaller than the object.

  2. Image in the pinhole camera is always inverted.

  3. All colours are seen in the image in a pinhole camera.

  4. Image in a pinhole camera is not misleading.

  5. Image in a pinhole camera is a dark outline formed behind an opaque body.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option. Image in a pinhole camera shows all details of an object.

Multiple choice physics light, shadows and images formation of image by a pinhole camera pinhole camera shadow

What is "Camera Obscura" effect ?

  1. Light from a scene passes through the aperture and gets reflected from the mirror placed at the other end of the box.

  2. Light from a scene passes from one medium to another and gets refracted

  3. Light from a scene passes through the aperture and passes through a lens placed on the opposite side of the box

  4. Light from a scene passes through the aperture and projects an inverted image on the opposite side of the box
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A pinhole camera is a simple camera without a lens but with a tiny aperture, a pinhole – effectively a light-proof box with a small hole in one side. Light from a scene passes through the aperture and projects an inverted image on the opposite side of the box, which is known as the camera obscura effect.

Multiple choice physics light, shadows and images formation of image by a pinhole camera pinhole camera shadow

Choose the correct option from the following 

$ Statement I:$ If the size of the hole in a pinhole camera is as big as the size of a green gram then the image becomes thick and the details of the image are not clearly seen. 

$Statement II:$ If the distance of the object from pinhole camera is increased then the size of the image that is observed on the screen also increases.

$Statement III :$ If the distance between screen and hole in the pinhole camera is increasing we observe the image is becoming blurred 

  1. All are correct
  2. $I, II$ are correct
  3. $II, III$ are correct
  4. $I, III $are correct
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

All statements are correct: a large hole causes blurring (Statement I), increasing object distance decreases image size (Statement II), and increasing screen distance makes the image larger but dimmer/blurred (Statement III).

Multiple choice physics light, shadows and images formation of image by a pinhole camera pinhole camera shadow

State the effect on the image formed by a pinhole camera if the size of the hole is increased.

  1. The image becomes blurred

  2. The image gets sharper

  3. The image completely vanishes

  4. No image is formed to begin with
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If the size of the hole increases the image will be blurred as several 
images are formed which overlap each other

Multiple choice maths enlargement and scale drawing dilation enlargement similarity as a size transformation mapping mapping space around us bearing and drawings

If the image of an object is enlarged, then what would be the effect on scale factor, $k?$

  1. $k$ will remain same for both.
  2. $k>1$ for enlarged image.
  3. $k<1$ for enlarged image.

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation


If image is enlarged, $k>1.$
If image size does not change, then $k=1.$
If image size is reduced, $k<1.$

Multiple choice

Aperture Area x Exposure Time x Sensor Sensitivity (ISO) =?

  1. luminosity

  2. intensity

  3. exposure

  4. shutter speed
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Exposure is the total amount of light that reaches the sensor, which is determined by the aperture area, the length of time the shutter is open, and the sensitivity (ISO) of the sensor.

Multiple choice physics wave optics resolving power of optical instruments resolution of optical instruments diffraction

A photographer changes the aperture of his camera and reduces it to half of the original aperture. The exposure time now should be:

  1. same as before

  2. double than before

  3. four times than before

  4. half than before
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Answer is D.

The amount of light captured while taking a photo is known as the exposure, and it's affected by three things - the shutter speed, the aperture diameter, and the ISO or film speed. 
Aperture is measured using the "f-number", sometimes called the "f-stop", which describes the diameter of the aperture. A lower f-number relates to a wider aperture (one that lets in more light), while a higher f-number means a narrower aperture (less light).
Because of the way f-numbers are calculated, a stop doesn't relate to a doubling or halving of the value, but to a multiplying or dividing by 1.41 (the square root of 2). For example, going from f/2.8 to f/4 is a decrease of 1 stop because 4 = 2.8 * 1.41. Changing from f/16 to f/11 is an increase of 1 stop because 11 = 16 / 1.41.
Hence, when the aperture of the camera reduces to half of the original aperture, the exposure time should be half than before.

Multiple choice

How can you avoid camera shake?

  1. Lower the shutter speed

  2. Raise the ISO and set the camera mode dial to M

  3. Use a tripod and raise the shutter speed

  4. Format the memory card and clear the cache
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Camera shake is caused by movement during a long exposure. Using a tripod stabilizes the camera, and a faster shutter speed reduces the duration of the exposure, minimizing the impact of any residual movement.