Photography Basics: Beginner’s Guide

Photography is an art and activity of capturing images using proper lighting effects. In early days, it is done by using light sensitive materials like photographic film. It is a strip of transparent plastic film base. One side of the sheet is coated with gelatine emulsion. The captured images are framed into the photographic films in negative mode. Thereafter the films were developed in a darkroom. After a complex chemical process, we used to get the pictures in positive mode, printed on photographic papers. It was truly a complex method of photography those days, and of course out of reach of many. But now a days, with advancement of technologies the photography basics has been enormously evolved. Photographic film development has become almost obsolete. Digital photography has completely taken over the art with photographic film. Thus now-a days photography is within the reach of many people around the world.

Flying Osprey

These days there is no need of any darkrooms for picture development. Just some basic settings are required. The pictures are stored in hard drives and printed as required. Some expensive DSLR cameras have wireless features, for instant file transfer. Therefore a beginner or amature photographer must go through some modern photography basics for skill development and advancement in future.

In addition to technical skills, photography also involves artistic expression and the ability to make creative decisions regarding composition, lighting, perspective, and post-processing. It is a medium that allows individuals to express their unique perspectives, explore visual storytelling, and communicate with viewers on an emotional and aesthetic level.

Some important photography basics for beginners are discussed bellow

• Framing: Using elements within the scene to frame the subject can add depth and context to the photograph. For example, shooting through a natural frame like a doorway or branches can give the image a sense of depth and draw attention to the subject.

   

  

  Radhagovindjiu temple, Antpur

• Symmetry and Balance: Symmetrical compositions can be visually striking, and they often create a sense of balance and order in the image. However, asymmetrical compositions can also be powerful if elements are strategically placed to create a harmonious visual balance.
  

  Tiger spotted Butterfly

Exposure in digital photography refers to the amount of light that reaches the camera’s image sensor or digital film. It plays a crucial role in determining the brightness or darkness of an image. Proper exposure ensures that the desired details and tonal range are captured accurately. While clicking an image, it is necessary to provide perfect amount of light to the sensor. It is the amount of light per unit area reaching a frame of photographic film or the surface of an electronic image sensor. It is determined by shutter speed, aperture, and scene luminance. Exposure is measured in lux seconds. It can be computed from exposure value (EV) and scene luminance in a specified region.

Radiant Exposure

Radiant exposure of a surface, denoted H_e (“e” for “energetic”, to avoid confusion with photometric quantities) and measured in J/m², is given by

H_e = E_et

where

• E_e is the irradiance of the surface, measured in W/m²;
• t is the exposure duration, measured in s.

Luminous exposure

Luminous exposure of a surface, denoted H_v (“v” for “visual”, to avoid confusion with radiometric quantities) and measured in lx⋅s, is given by

H_v = E_v t

where

• E_v is the illuminance of the surface, measured in lx;
• t is the exposure duration, measured in s.

Overexposed Photograph

less exposed photo

Perfectly captured photo

As shown in those above pictures you can clearly observe the differences. In the first photograph much light than necessary, provided. Likewise the second picture has been provided less light, so that it is less exposed. Whereas the third one is perfectly crafted as the correct amount of light has been provided. Some important terms related to photography basics are discussed bellow.

ISO

ISO is one of the photography basics, that a beginner should learn first. ISO in photography refers to the sensitivity of the camera’s image sensor to light. It is one of the three fundamental exposure settings, alongside aperture and shutter speed, that determine the overall exposure of a photograph. ISO stands for the International Organization for Standardization, which established the standardized scale for measuring sensitivity.

The ISO value is represented by a number, such as ISO 100, ISO 400, or ISO 1600. A lower ISO value, like ISO 100, indicates low sensitivity to light, while a higher ISO value, like ISO 1600, indicates higher sensitivity to light.

Here are a few key points to understand about ISO in digital photography:

• Low ISO: When shooting in bright conditions or with ample available light, photographers typically use a low ISO setting, such as ISO 100 or ISO 200. This helps maintain image quality, reduces digital noise, and produces cleaner images with more accurate. 

• High ISO: In situations with limited light, such as indoors or at night, or when using a faster shutter speed is necessary, a higher ISO value is used. Higher ISO settings, such as ISO 800, ISO 1600, or even higher, make the camera more sensitive to light, allowing you to capture images in darker environments. However, higher ISO settings can introduce digital noise or graininess, which can degrade image quality.

  

  Pied Kingfisher

• Balancing ISO: Choosing the appropriate ISO setting involves finding the right balance between capturing enough light for a proper exposure and minimizing digital noise. Modern digital cameras have improved ISO performance, allowing for higher ISO values with reduced noise compared to older models. However, the exact ISO performance varies between camera models.

  

  Royal Bengal Tigress

• Post-processing: If your image has noticeable noise or grain due to a high ISO setting, you can use post-processing software to reduce the noise while preserving image details. Many image editing programs offer noise reduction tools that can help improve the quality of high ISO images. 
  

  Noise reduction in Adobe Photoshop

Aperture

In digital photography aperture is known as the adjustable opening within the camera lens, through which the light passes through to the sensor. The amount of light can be adjusted by increasing or decreasing the aperture. Thus brightness can be adjusted.

Depth of Field 

Depth of field refers to the range of distance in a photograph or a scene that appears acceptably sharp and in focus. It is determined by several factors, including the aperture, focal length, distance to the subject, and sensor size.

A shallow depth of field occurs when only a small portion of the scene is in focus, while the rest appears blurred or out of focus. This effect is commonly used in portrait photography or to emphasize a specific subject. A wide aperture (small f-number like f/1.8 or f/2.8) helps create a shallow depth of field.

On the other hand, a deep depth of field occurs when a large portion of the scene is in focus, from the foreground to the background. This is often desirable in landscape photography, where you want everything to be sharp. To achieve a deep depth of field, a smaller aperture (higher f-number like f/11 or f/16) is typically used.

The focal length of the lens also affects the depth of field. In general, shorter focal lengths (wider-angle lenses) tend to have a deeper depth of field, while longer focal lengths (telephoto lenses) have a shallower depth of field.

Depth of field formula

DOF = 2u²Nc/f²

DOF – depth of field

u – distance of subject

N – f-number

c – circle of confusion

f – focal length

Aperture is a hole in camera lens through which light enters the camera and reach to the sensor. The f-stop values are normally f2.8, f3.5, f4, f5.6, f8, f11, f16, f22 etc. The smallest f-numbers means the widest apertures and therefore the shallowest depth of fields. And the larger f-numbers means to the narrowest apertures and therefore the deepest depth of fields. For landscape photography we need higher f number, e.g. f22. For portrait photography we need smaller f number e.g. f2.8.

Focal Length

Focal length refers to the distance between the lens and the camera’s image sensor or film when the subject is in focus. It is typically measured in millimeters (mm) and is one of the key specifications of a camera lens.

Focal length directly affects the field of view and magnification of a lens. A lens with a shorter focal length (wide-angle lens) has a wider field of view, capturing a broader scene in the frame. These lenses are commonly used for landscape, architectural, and interior photography. They also tend to have a greater depth of field, meaning a larger portion of the scene appears in focus.

Conversely, a lens with a longer focal length (telephoto lens) has a narrower field of view and a higher magnification. Telephoto lenses are useful for capturing distant subjects, such as wildlife, sports, or events where you can’t get physically close to the subject. They tend to have a shallower depth of field, isolating the subject from the background and creating a compressed perspective.

The choice of focal length depends on the photographer’s intent and the desired effect. Different focal lengths can dramatically alter the composition and perspective of an image. For example, a wide-angle lens can create a sense of depth and expansiveness, while a telephoto lens can compress distances and emphasize specific elements in the frame.

Shutter Speed

Shutter speed is one of the most vital photography basics that refers to the length of time the camera’s shutter remains open, allowing light to enter the camera and expose the image sensor or film. It is one of the three components of the exposure triangle, along with aperture and ISO, that determines the overall exposure of a photograph.

Image clicked with high shutter speed

Shutter speed is typically measured in fractions of a second, such as 1/500, 1/250, 1/60, etc. A faster shutter speed, like 1/1000, means that the shutter opens and closes quickly, allowing less light to reach the sensor and resulting in a shorter exposure time. On the other hand, a slower shutter speed, like 1/30, means the shutter remains open longer, allowing more light to reach the sensor and resulting in a longer exposure time.

The choice of shutter speed has a significant impact on the appearance of a photograph. A fast shutter speed is often used to freeze action and capture fast-moving subjects sharply, such as in sports photography. It can also help reduce motion blur when photographing handheld or in low-light situations. On the contrary, a slow shutter speed can create a sense of motion blur or intentionally blur moving subjects, which is commonly used in techniques like long-exposure photography to capture light trails, flowing water, or night scenes.

White Balance

White balance is one of the photography basics that refers to the adjustment of colors in an image to ensure that white objects appear truly white, regardless of the lighting conditions under which the photo was taken. It is particularly important when shooting in different lighting environments, such as indoors with artificial lighting or outdoors with natural light, as different light sources emit light with varying color temperatures.

This function of digital camera is used to compensate for different colors of light being emited from different sourses.

There are many white balance modes. Universally photographers use 4 modes. These are i. Sun mode, ii. bulb mode, iii. flash mode, iv. auto mode.

Color Temperature

Color temperature is one of the photography basics, that refers to the characteristic color of light sources, which is measured in Kelvin (K). It determines whether the light appears warm or cool in a photograph.

Different light sources emit light with varying color temperatures. For example, sunlight at noon has a color temperature of around 5500K and is considered neutral or “white” light. Light from incandescent bulbs has a lower color temperature, around 2700K, giving off a warm, orange-yellow glow. Fluorescent lights, on the other hand, often have a color temperature between 4000K and 5000K, resulting in a cooler, bluish tone.

 

Photographers often adjust the white balance of their cameras to compensate for the color temperature of the light source and ensure accurate color reproduction in their photographs. White balance settings help the camera interpret the color of the light correctly, so that whites appear white and other colors appear natural.

In addition to white balance adjustments, photographers may also intentionally use the color temperature of the light source to create a specific mood or atmosphere in their photos. For example, shooting during the golden hour (early morning or late afternoon) when the sun’s color temperature is warmer can result in a softer, more romantic feel. Alternatively, using cooler color temperatures may evoke a sense of calmness or a colder environment.

Conclusion

In conclusion, photography basics provide a foundation for understanding the fundamental principles and techniques of capturing compelling images. While mastering the basics is important, photography is also a creative art form. Experimentation, practice, and developing a personal style are key to expressing your unique vision through your photographs. Remember, practice is key to improving your photography skills. Experiment, try different techniques, and develop your own style. Additionally, exploring the work of established photographers can provide inspiration and insights into different genres and styles of photography.