Focus distance

- When you shoot macro On many macro lenses, you usually have to be at the closest focusing distance to achieve the maximum magnification. But you don’t always want to be too near your subject, especially if you are shooting sensitive creatures such as insects.  Tip: Use a a telephoto macro lens like 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 even when shooting from some distance away.

By satisfying several conditions, a large bokeh can be obtained even with a standard zoom lens. Find out more as I explain how to do so with the help of some photos of flowers. (Photo & text by: Kazuo Nakahara)

focal length中文

- When you are shooting in a tight space If the closest focusing distance is big, you will have to stand further away to focus on your subject. Framing and composition aside, this is also why it would be hard to use a telephoto zoom lens like the EF70-200mm f/4L IS II USM (C.F.D: 1.0m) to photograph someone sitting right across the table from you in a small, cozy café.

Tip: There are pitfalls to shooting too close It’s great to have the freedom 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 built-in Macro Lites, consider if you want to invest in a flash that is designed for macro photography.

Learn the best ways to create amazing images and videos, share your works with the community and be inspired by our community.

2023217 — Think of it as a two-stage magnifying glass. The objective first produces an enlarged image of the object. This is very similar to taking macro shots with a ...

Know this: Compact cameras may carry specifications such as “1cm macro”. This refers to the working distance of the lens, not the closest focusing distance.

Canon EOS cameras have a focal plane mark 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 distance indicated on the scale is equivalent to the closest focusing distance.

Minimumfocus distance

2023727 — Parallel Resonant Bandpass Filters. A bandpass filter using a parallel resonant circuit is shown in Figure 4. In this case, the output voltage ...

Motorized Gimbal Mount comes with two plastic padding rings and a retaining ring M27x1 to safely secure your optics. A tightening key 3K-25 for the retaining ring is available on request. Gimbal mount axes of rotation are orthogonal and fixed in space.

Welcome to ZINC, a free database of commercially-available compounds for virtual screening. ZINC ... MWT Molecular weight (g/mol), RB Rotatable bonds, DL. Ref ...

LUCID Vision Labs GmbH ... Company overview: LUCID Vision Labs, Inc. designs and manufactures innovative machine vision cameras and components that utilize the ...

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

Focaldistancevs focal length

Born in 1959 in Yamanashi. After graduating from Nihon University, Hagihara was involved in the launch of the photography magazine Fukei Shashin where he worked as an editor and a publisher. He later 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).

Buy 8' Air Blower, 1/4 HP, 816CFM online from Canada's widest selection of welding supplies. Shop now and get free shipping within Canada on orders more ...

The Dynamic Optics and Photonics Group's work ranges from adaptive optics for correction of specimen-induced aberrations in microscopy to laser-based three ...

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

FOV to focal length

Please note that SNAPSHOT account based features and services are ONLY available to citizens and/or legal residents of selected countries/regions in South and Southeast Asia.

Focal length formula

Mfr. No. ... Mfr. No. ... Description. Used in Luminescent material, infra red optical material, semiconductor, as a pigment, used as a window for visible optics ...

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

Lensfocal length comparison

Other than brightness, what sets an f/2.8 lens apart from an f/4 lens? Using the EF70-200mm f/2.8L IS II USM and the EF70-200mm f/4L IS USM, I will show how the two differ by comparing the apparent resolution and bokeh size. (Photos by: Ryosuke Takahashi)

The set of wavelengths absorbed by a pigment is its absorption spectrum. In the diagram below, you can see the absorption spectra of three key pigments in ...

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

Many people think that the closest focusing distance and the working distance of a lens are the same thing. They are related concepts, but they are not the same!

Focal length

Axetris offers micro lenses and arrays made of silicon or fused silica for Tele-/Datacom, automotive and consumer applications.

Unravel the “secret code” in a lens name, and find out about the story behind the red rings and white bodies on some lenses.

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

Capturing beautiful bokeh circles is one of the photography techniques that I would recommend trying. Once you have mastered the trick to creating them, you’ll be able to capture such photos effortlessly. Here, I will explain bokeh circles are formed as well as a few tips to capturing them. (Reported by: Kazuo Nakahara)

The objective in Figure 1 has mounting threads that are 20.32 mm in diameter with a pitch of 0.706, conforming to the RMS standard. This standard is currently ...

Learn the best ways to create amazing images and videos, share your works with the community and be inspired by our community.

- When you are trying to create bokeh Shooting with the camera closer to the subject results in a shallower depth-of-field, which helps to create a stronger background bokeh effect.