Macro lenses will allow you to lock in focus much closer to your subject than your everyday lens and even your eyes. You will need to move it back away from your face in order to see that finger clearly. At some point you will not be able to maintain focus on your finger. Hold a finger (your finger) in front of your face and move it closer. The same is not true for things up close. Any lens can focus on something far away. The distance in which a lens is able to find focus is referred to as focal distance. If you use your everyday lens and try to focus on an insect just a few inches away your from lens you may not be able to focus on the insect. One reason why you need a macro lens for insect photography is that they allow you to focus on things at a closer distance than general purpose lenses. Insect Photography Tips: Look for a macro lens with 1:1 magnification ration. I will not discuss lenses with 1:2, 1:3, or 1:4 image magnifications.ĭon't forget, you can also add accessories to increase the natural magnification of your existing lenses. To keep things simple (and on track) you should know that if you want a true macro lens, it needs to have a magnification ratio of 1:1, 2:1, 3:1 or higher.įor the purpose of this article and what I think you are looking for, I will only recommend macro lenses that have a 1:1 ratio.Īlthough I will mention one lens that has an incredible 5:1 magnification ratio. Put very simply, image magnification refers to the lens' ability to record subjects at their actual size.Ī 1:1 magnification ration means that the lens can record an insect at its actual size.Ī 1:2 magnification ratio means that a lens can record an insect at half its size.Ī 2:1 ratio means that a lens can record an image at twice its size. Understanding image magnification and how to calculate it requires another article in and of itself as well as a fair share of math. Just because a lens says "macro" doesn't mean it's a macro lens by definition.īy definition, a macro lens is a lens that can produce an image magnification ratio of 1:1 or higher. Many lens makers use the term "macro" rather loosely in their marketing efforts.
0 Comments
Leave a Reply. |