Set Subject: Small world / Macro
Images Due: Monday 11 September
Competition Night: Monday 25 September
Magnification - or more precisely, the magnification ratio - is simply the relationship between of the size of the (in-focus) subject's projection on the imaging sensor and the subject's size in reality. If these are equal (1:1) then the size of the subject in the photograph is the same as the subject’s life-size, and is regarded as ‘true’ macro. Commonly however, ‘macro’ is considered to be a close-up photograph where the size of the subject on the sensor may be, for example, half (1:2) or a quarter (1:4) the subject’s life-size. So, for this competition, any close-up photograph of a subject is acceptable, with the lower magnification limit (e.g. 1:4, 1:8 etc.) left to the discretion of the photographer. For magnification ratio’s much higher than 1:1, for example 20:1 or higher, photographers usually attach a camera to a light microscope and this is referred to as ‘small world’ photography (e.g. http://www.nikonsmallworld.com/). Such photographs would also be acceptable in this competition. Subjects could be biological specimens or parts of them, for example insects, other animals or plants. The subject could also be a non-biological object or a part of it.