Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
A true macro lens can range from a magnification ratio of 1:1 to the magnification ratio achieved when the lens is focused at infinity, while yielding high quality images without any optical aids.
The depth of field decreases significantly with an increase in magnification. Decent quality images beyond 1:1 can only be achieved with an SLR camera and specialty equipment.
*Depending on close focusing distance (i.e., the closeup functions of the lens), the magnification ratio that can be attained will vary.
Snail on fall foliage. 1/60 sec at f/16; 105mm macro lens; TTL-controlled flash with softbox.
By using the softbox you apply a light source that is far larger than the object and therefore create a pleasant soft light.
Dung beetle in the autumn forest. 1/60 sec at f/11; 105mm macro lens; TTL-controlled flash with softbox.