DIGITAL PHOTOGRAPHY TIPS FOR BEGINNERS.

USE A POLARIZING FILTER

If you can only buy one filter for your lens, make it a polarizer. This filter helps reduce reflections from water as well as metal and glass. It also improves the colours of the sky and foliage. It will protect your lens too. There is no reason why you can’t leave it on for all of your photography. The recommended kind of polarizer is circular because these allow your camera to use TTL (through the lens) metering (Auto exposure).

DO NOT USE FLASH INDOORS

Flash can look harsh and unnatural especially for indoor portraits. Therefore, there are various ways you can take an image indoors without resorting to flash. First, push the ISO up – usually ISO 800 to 1600 will make a big difference for the shutter speed you can choose. Use the widest aperture possible. by this way more light will reach the sensor and you will have a nice blurred background. You may use a tripod or an I.S. (Image Stabilization) lens to avoid blur.

Silhouettes

If you are in a very dark venue, capturing silhouettes of people in the crowd gives a dramatic feel. As long as the stage is bright and the crowd area is dark, use a wide-angle lens, open the aperture wide to f/2.8 - f/4 and make sure your flash is turned off. Use either spot or multi-zone metering mode. Take the camera light reading from the bright background, then point the camera at your subject and shoot.

GRAPHIC DESIGNING

TECHNOLOGY IN THE FIELD OF PHOTOGRAPHY.

How to change the facial expressions on a photo.

Technology has helped animate those regal features, and may also improve everything from the films you see at the cinema to the gurning expressions in your selfies.

There was a project which, the aim was to design a programme that could clone someone’s facial expression, and seamlessly paste it onto a face in another picture. It sounds simple, until you consider the way even a simple smile can stretch and pull skin across the whole face. Replicating those contortions on a second face is particularly tricky, given the vast differences in people’s facial shape: 

This analyses two still photos - one neutral, and one of the desired expression - to measure minute differences in the musculature of the face and the relative size of the facial features. From this, the programme can estimate the way your flesh moves to create the expression, and then applies it to any other face of your choosing. Their research was recently published in the Journal of Visual Communication and Image Representation.

They hope that the same technology could allow actors to seamlessly animate figures in films like Frozen – without the complex motion-sensing technology that’s currently used. “This not only facilitates the process of professional movie production, but also allows millions of amateurs to create their DIY special-effect videos and share on the internet.

An automatic algorithm could also be used to improve video calls; rather than transferring a continuous video, the algorithm could track your facial expression to animate a static photo or avatar. That should save the cost of transmitting all that extra data involved in a live video, while still communicating the essential information – your emotions.

Less seriously, you might just use the programme to correct a gormless face in a selfie. “Imagine one took a picture in a scenic spot and want to share it to friends. However, the expression may not look good in the picture. In this case, this technique can be applied to transfer a smile to the face, and make the expression more satisfactory. 

For example,