One limitation of macro photography when using a conventional lens is that there is a limit to how close you can focus due to the lens’s minimum focusing distance. Extension tubes for macro photography allow you to shift the focus zone of the lens you’re using so that the smallest of items are crystal clear and tack sharp. When doing macro photography, minimum focusing distance often becomes an issue because you can’t get in close enough to shoot your tiny subjects because your lens won’t focus that close.One solution is to get a set of extension tubes.
Close Up Lens Filter
Macro filters (also called close up filters) are filters that screw onto the front of a lens and act in a similar fashion to a magnifying glass. Placed between the subject and camera lens, the macro filter reduces the lens’ effective focal length. This in turn decreases the minimum focusing distance of the lens and allows for greater magnification. Macro filters are available in a range of +2 to +4 diopters. Wearers of glasses will recognise this term as it is also used to denote the amount of positive or negative magnification needed for eye corrections.