ISO regulates how much light is allowed to enter your camera, determining the brightness or darkness of your photos. A greater ISO number signifies increased sensitivity and better light-capturing capability, resulting in potential graininess in the image. A cleaner image is achieved when a higher amount of light is required to properly expose the image, resulting in a lower ISO number. High ISO is typically ideal for low-light conditions, particularly when a quick shutter speed or a small aperture is needed to meet creative objectives. Texture in photography refers to the visual aspect of an object’s surface, which can be seen through variations in shape, tone, and colour saturation. Texture brings life and vibrancy to images that might appear boring otherwise. 

Exploring the effects of ISO:

I focused on using ISO for these images to create light and dark images. In both photos I had a set shutter speed on the automatic focus ,however I changed the ISO in both images ,so in the first photo I used a low ISO at 200 which created the shadows to appear darker. Where as in the second photo I used a high ISO at 800 which created a shine within the lighter parts of the image giving the photo a reflective realism.