I am a new member here. Using powershot A540, so just wanna how to isolate a subject from the background. Use aperture setting or using focus lock???
can help?
can help?
use the longest focal length and widest aperture... and try to frame your subject so that it is further away from the BG.I am a new member here. Using powershot A540, so just wanna how to isolate a subject from the background. Use aperture setting or using focus lock???
can help?
Understanding Depth of Field (DOF, do a google search or read it up on some prominent photography website) would go a long way towards knowing how to isolate the subject to the background. The trick is to have a shallow DOF just enought to have the subject in focus but throws the background out of focus. DOF is related to focal length, distance to subject, aperture and image sensor size.
DOF is inversely proportional to actual focal length used. Point and Shoot cameras like the A540 have a very small sensor and very short actual focal lengths (e.g. actual focal length is only 5-20+mm for 35-105mm on the 35mm format equivalent) and so having a shallow DOF is much more difficult than a DSLR/SLR. For such short focal length and small sensor size, a shallow DOF is more achievable only when the subject distance is very near (i.e. close up or macro where the focal length used is very much relatively nearer to the subject distance than when the subject is much further away).
Colour and bightness contrast also contribute to the isolation.
Read up on Complementary Colours and Harmonizing Colours. Understanding the colour spectrum will help you in knowing which colours are complementary etc.
The subject much brighter than the background would also make the subject stand out against the background. Try to avoid bright background as bright areas tend to attract attention away from the subject. Also certain colours (e.g. yellow and light green) are "brighter" than others.
various way in the wider sense of isolation (making the subject stands out from the background)
1. blurring the background with bokeh (narrow depth of field)
2. simple background
3. contrasting colors
4. contrasting tone (lighted versus dark background)
5. lines that lead to the subject
6. contrasting pattern