Marumi Macro Achro 200 + 5 Filter DHG 52mm

It is made of hardened glass and has a multi-coating. This makes the lens moisture-, scratch-, and dirt-resistant. The macro achromatic close-up lens shortens the focal length, allowing you to photograph objects closer with your camera. Ideal for close-ups and product photography. The high ring prevents unwanted light incidence and reflection. Compared to non-achromatic close-up lenses (regular macro filters), this DHG (Digital High Grade) achromatic close-up lens offers increased sharpness and extra detail for difficult objects, such as glass and jewelry. An extension of the exposure time is not necessary.

Capabilities

Explanation DHG Macro Achromatic Close-up Lens +5
The strength of an Achromatic close-up lens is given in diopters, in this case +5. With the following formula, you can calculate how to reduce the minimum focal length with a certain Macro or Close-up filter.

This formula is:
X : ( D * X + 1)

Here, X is the minimum focal length of your lens in meters, and D is the diopter number on the Close-up lens.

Here's an example calculation:
You have a lens that can focus from 55 centimeters and you use this Close-up filter with a diopter of +5. In this case, the calculation is:
0.55 : ( 5 * 0.55 + 1 ) which is the same as
0.55 : ( 2.75 + 1 ) or
0.55 : 3.75 = 0.146 Meters, so 14.6 centimeters