Image by Josh Waller
Bokeh is something that can create a great background for an image, but also makes fantastic abstract images by itself. Here, we go through how you can quickly create great bokeh using your Tamron lenses.
Bokeh is a term used to describe how good the out of focus background looks in your images. It is most usually formed when there is dappled light or several lights in the background of the image. It forms in circles, or sometimes doughnut shapes, and is at its most visible at wide apertures, but varying the aperture and how far away you are from your subject compared to your background are all factors in how the bokeh will look.
When photographing Christmas lights, the Bokeh effect can be used as a flattering background when photographing baubles or other decorations. Manual focus may be required to make sure that all, or the part if the decoration you want to be the centre of attention is in focus. Start with a wide aperture and gradually apply small changes until you get the desired effect.
In terms of lenses, macro options, or standard lenses with a wide aperture will be ideal. A lens like the 15-30mm f/2.8 will give you lots of scope for wider images, enabling you to fill the frame with your subject and still incorporate lots of background lighting.
For a more abstract feel, compose your shot full of the lights you want to incorporate. Turning all the other lights in the room off will help to emphasise the effect. Throw the lights out of focus using manual focus and play with your aperture until you get pleasing bokeh. This is a great technique to have a go at in an evening.