The Marumi Macro Achro 200 + 5 Filter DHG 72 mm, crafted from hardened glass with a multi-coating, stands as a resilient companion for your lens—warding off moisture, scratches, and grime. This macro achromatic filter shortens the focal length, letting your camera get up close and personal with subjects. Perfect for capturing those detailed close-ups and product photography. The high ring design efficiently cuts down on unwanted light and reflection. Unlike those standard macro filters, this Digital High Grade (DHG) achromatic filter gifts you with enhanced sharpness and added detail, especially when dealing with tricky subjects like glass and jewellery. No need to extend the exposure time either.

Key features of Marumi Macro Achro 200 + 5 Filter DHG 72 mm:

• Multi-coated hardened glass providing moisture, scratch, and dirt resistance
• Reduced focal length for capturing detailed close-ups
• High ring design to prevent unwanted light and reflection

Let's dive into what this DHG Macro Achromatic filter—with a strength of +5 dioptres—entails. Dioptres, in this instance +5, indicate the strength of an achromatic filter. Curious about reducing the focal length with a specific Macro or Close-up filter? Here's a nifty formula to do just that:

The formula goes as follows:
X : (D X + 1)

Here, 'X' represents the minimum focal distance of your lens in meters, and 'D' is the dioptre value of the Close-up filter.

For instance, if a lens focuses from 55 centimetres, using this +5 dioptre Close-up filter, here's the calculation:
0.55 : (5 0.55 + 1) which translates to
0.55 : (2.75 + 1) equating to
0.55 : 3.75 = 0.146 meters, or roughly 14.6 centimetres.

The package includes the Marumi Macro Achro 200 + 5 Filter DHG 72 mm alongside a colourful packaging, making it a vibrant addition to the kit.