What Is Minimum Focus Distance In Photography

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This series is all about answering questions regarding lenses that yous thought you knew but didn’t. In this article, we look at one lens specification that you might want to consider when y’all buy lenses or choose which 1 to use: The closest focusing distance, also known every bit the minimum shooting distance. (Reported by: Shirou Hagihara, Digital Camera Mag)

The closest focusing distance is NOT the same equally the working altitude!

Many people retrieve that the closest focusing distance and the working distance of a lens are the same thing. They are related concepts, just they are non the same!

The
closest focusing distance
of a lens (see A below) refers to the shortest altitude that must be between your subject and the surface of the image sensor (the focal plane) for the lens to focus. Information technology is not afflicted by the length of your length, and does non change even if you zoom your lens.

In contrast, the
working distance
(meet B below) refers to the distance between the front of the lens and the subject.

A lens that has a very short closest focusing distance allows y’all to achieve sharp, in-focus images with a shorter working distance.

Tip: There are pitfalls to shooting as well close

It’s great to take the liberty to be able to shoot close to your subject, but too close and the lens hood and lens shadow might be captured in your shot—not ideal for some shooting scenes! Take the necessary precautions. If your lens doesn’t have congenital-in Macro Lites, consider if y’all desire to invest in a flash that is designed for macro photography.

Know this:
Compact cameras may carry specifications such equally “1cm macro”. This refers to the working distance of the lens, non the closest focusing distance.

Closest focusing distance and working distance

A: Closest focusing altitude
B: Working distance


Where is the closest focusing distance measured from?

Canon EOS cameras have a focal airplane marking on the camera body. The image sensor is located under this mark. The focusing distance is measured from this mark to the subject. If the lens has a distance scale, the shortest altitude indicated on the calibration is equivalent to the closest focusing altitude.

When does the closest focusing distance affair?

– When you shoot macro

On many macro lenses, you usually accept to exist at the closest focusing distance to achieve the maximum magnification. But yous don’t always desire to exist as well near your subject, peculiarly if you are shooting sensitive creatures such as insects.

Tip:
Use a a telephoto macro lens similar the EF180mm f/3.5L Macro USM (C.F.D: 0.45m) or the EF100mm f/2.8L Macro IS USM (C.F.D: 0.3m) to achieve life-size magnification fifty-fifty when shooting from some distance away.


– When you are trying to create bokeh

Shooting with the photographic camera closer to the subject results in a shallower depth-of-field, which helps to create a stronger groundwork bokeh effect.


– When you are shooting in a tight space

If the closest focusing distance is large, yous will have to stand further away to focus on your subject. Framing and composition bated, this is also why it would exist hard to use a telephoto zoom lens similar the EF70-200mm f/4L IS II USM (C.F.D: ane.0m) to photograph someone sitting right across the table from y’all in a small, cozy café.

Closest focusing distances of commonly-used Catechism lenses











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Born in 1959 in Yamanashi. Subsequently graduating from Nihon University, Hagihara was involved in the launch of the photography magazine Fukei Shashin where he worked equally an editor and a publisher. He afterwards resigned and became a freelance photographer. Currently, Hagihara is engaged in photography and written works centring on natural landscapes. He is a member of the Society of Scientific Photography (SSP).

A monthly magazine that believes that enjoyment of photography will increase the more than one learns about camera functions. It delivers news on the latest cameras and features and regularly introduces various photography techniques.
Published by Impress Corporation

Source: https://snapshot.canon-asia.com/reg/article/eng/lens-faq-1-what-does-closest-focusing-distance-refer-to

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