Lens Focus Breathing Explained, And Why You Should Care

Focus Breathing

Lens focus breathing. Ever heard about? According to Wikipedia:

[Lens] Breathing refers to the shifting of angle of view of a lens when changing the focus. Some (often higher quality) lenses are designed to lessen the degree of this effect. Lens breathing does not prevent one from racking focus or following focus with this lens, but it lessens the desirability of any type of focus adjustment, since it noticeably changes the composition of the shot. This is not to be confused with the suction and expulsion of air from within the lens as its internal volume changes.

Want it easier? DPReview TV to the rescue:

Explained: The Best And The Worst Ways To Clean Lenses

Clean Lenses

Honestly: who didn’t question what is the best way to clean lenses? Well, here are some advices.

The folks at DPReview has some tips about how to do it best, and about how to do it in the wrong way in the 10 minutes video below. Enjoy.

Table of contents:

  • Introduction
  • A few things first…
  • Wiping surfaces
  • Cleaning liquids
  • Scratch resistance
  • Sand damage
  • An exciting new tool from Chris and Jordan!
  • In summary…
  • Lens tissues

More tips about how to clean lenses and camera:

Canon Announced A New Cinema Lens, The Cine-Servo 25-250mm T2.95-3.95

Cine-Servo 25-250mm

Beside the Canon EOS C300 Mark III and a new set of EOS R5 specifications, Canon yesterday also announced a new Cinema lens, the Canon Cine-Servo 25-250mm T2.95-3.95.

Canon press release:

Canon U.S.A. Introduces New Cine-Servo 25-250mm T2.95-3.95 Cinema Lens Available in Both EF and PL Mount

Superb Combination of Focal Range, Compact Size and Light Weight Makes it Ideal for a Range of Broadcast and Cinema Productions

MELVILLE, NY, April 20, 2020Canon U.S.A. Inc., a leader in digital imaging solutionstoday announced the CINE-SERVO 25-250mm T2.95-3.95 (CN10x25 IAS S), a new CINE-SERVO cinema lens designed for use with 4K cameras. The new lens, which is available in both EF and PL mount, features 10x optical zoom, a built-in 1.5x extender and a powerful and removable servo motor drive unit, providing broadcast-friendly shoulder operation for ENG/EFP and documentary style shooters. The lightweight design of the lens (6.7 lbs.) is remarkable given the zoom range and feature set, especially when compared with other lenses of similar focal lengths. This outstanding model, as well as the Sumire Prime Lenses announced in 2019, have further strengthened Canon’s robust lineup of Cinema Lenses.

“As the lines between broadcast, cinematic and commercial productions continue to blur, it becomes more important to have a seamless product line that can provide solutions across a broad scope of applications,” said Tatsuro “Tony” Kano, executive vice president of the Canon U.S.A., Inc. Imaging Technologies and Communications Group. “The CINE-SERVO lens family combines outstanding performance and an unmatched focal range from 17mm up to 1500mm in the three-lens family. The new CINE-SERVO 25-250mm lens adds a great deal of versatility to the lineup, and will soon be a favorite of productions large and small.”

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Protect Your Lens With These Lens Pouches Made In Africa (and for a good cause)

Lens Pouches

Our friends at COSYSPEED started a new interesting project. Lens pouches made in Africa, and for a good cause.

Everyone owns camera lenses. And everyone knows they can scratch quickly or dirt can get in while you have them in your bag. They also quickly gather dust when stored on a shelf. The new COSYSPEED lens pouches offer reliable protection. They are well made, lined with soft microfibre on the inside and colored classic black or African style on the outside. They are available in three sizes to cover the most common lens sizes.

And here is the (cool) thing: When you buy a COSYSPEED lens pouches, you get a high quality product and actively do development work. You are not just sending money, you are giving someone work and the opportunity to help her or him self. And that’s a win win situation for everyone!

You can back the lens pouches project at Indiegogo.

COSYSPEED products: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA

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