RSS
 

Posts Tagged ‘supertele’

The inspiration behind Canon’s RF 600mm F11 and 800mm F11 super-tele lenses

06 Oct

In July, Canon announced a pair of super-telephoto fixed-aperture lenses for its RF lens mount. The new RF 600mm F11 IS STM and RF 800mm F11 IS STM lenses are distinct among Canon’s modern offerings but are reminiscent in design and philosophy to some of Canon’s R lenses from 1960.

Six decades ago, Canon released the R300mm F4, R400mm F5.6, R600mm F5.6, R800mm F8 and R1000mm F11 super-telephoto lenses. While not fixed aperture lenses like the new RF lenses, the vintage bellows-driven lenses were nonetheless the inspiration for this year’s modern interpretations. In a Japanese-language interview published by DC Watch, Canon’s Chief of Lens Product Planning, Kengo Iezuka, notes that the EOS R system allows him and his team to create new user experiences for modern photographers. This includes breaking down ‘the three barriers of super-telephoto lenses,’ which he states are weight, size and cost. In 1960, Canon worked to overcome these challenges with its R lenses, and Iezuka believes Canon’s RF 600mm F11 and RF 800mm F11 lenses do the same in 2020.

Canon R600mm f/5.6 lens. The lens was first marketed in January 1960. Image credit: Canon, Canon Camera Museum

When Iezuka was a child and wanted to capture wildlife images of a Little Egret, he was unable to due to the expense of super-telephoto lenses. Iezuka says via translation, ‘I knew that there were many people who gave up what they wanted to shoot and the expressions they wanted to shoot because they couldn’t buy a super-telephoto lens and couldn’t carry it because it was big and heavy. With the EOS R system, I think I was finally able to get closer to the dream super-telephoto world. I would like you to enjoy shooting things that you couldn’t shoot before and the expressions you wanted to shoot with this 600mm/800mm F11 lens.’

In elaborating further upon how the Canon EOS R system allows the three barriers of super-telephoto lenses, Iezuka states that Canon’s Dual-Pixel CMOS AF allows for strong autofocus performance even in low light, or when using a lens with a smaller maximum aperture, such as F11. In 1960, the sensitivity of film was stricter, requiring faster apertures in the case of the R400mm F4.5, R600mm F5.6 and R800mm F8. However, today, Canon’s EOS R system allows for much more flexibility when designing new lenses. In fact, the EOS R can even work with F22, allowing Iezuka and his team to utilize an F11 design that can incorporate a 2x teleconverter.

If Canon had pursued an F8 aperture, the lens would have been larger and heavier. An F16 lens would have worked without a teleconverter, but not with a 2x TC attached. It was around this point in the design process when the team first considered making the lens with a fixed aperture. Ultimately, removing the aperture unit allowed for reduction in weight and cost, both critical design goals for Iezuka and the team at Canon.

Iezuka also shared that the RF 600mm and 800mm lenses were not his first attempt to create a lightweight and cost-effective super-telephoto lens. He had previously explored the idea for SLR cameras. ‘I wondered if I could manage to get closer to the world of super-telephoto lenses that exceed 400mm,’ Iezuka said, ‘I considered increasing the F-number as I did this time, but it didn’t work. If you increase the F value, you can only autofocus at the center of the [frame]…so I gave up.’ The new RF lenses offer autofocus coverage of 60% x 40% (W x H) with the recent Canon EOS R5 and R6 full-frame mirrorless cameras.

Iezuka also considered zoom lenses, but this design would increase the weight too much to be able to carry the lens around all day. The RF 600mm lens weighs approximately 2.05lb and the RF 800mm weighs about 2.78lb. In order to maintain a lightweight design and ensure the lenses are affordable, metal parts are kept to a minimum and much of the lens is constructed using resin. In order to utilize a collapsible design, many parts had to be molded, which is unique for Canon’s lenses. The collapsible design came from one of the youngest members of the team, Iezuka says, and was the result of internal competition within the department.

There is much more excellent insight into the design process in the full interview, so be sure to check that out. Click the following links for more information on the Canon RF 600mm F11 IS STM and RF 800mm F11 IS STM lenses.

(Via PetaPixel)

Articles: Digital Photography Review (dpreview.com)

 
Comments Off on The inspiration behind Canon’s RF 600mm F11 and 800mm F11 super-tele lenses

Posted in Uncategorized

 

Think Tank Photo releases Digital Holster 150, a waist holster for super-tele zooms

28 Jun

Think Tank Photo has released the Digital Holster 150, a top-loading waist holster designed specifically for use with super telephoto zoom lenses.

Think Tank Photo says the holster was built to replace a backpack for times when you’ll only be carrying around one super telephoto zoom lens and an attached camera body. Like Think Tank Photo’s other holsters, the Digital Holster 150 is designed to be used with a belt system, such as the Pro Speed Belt V3.0 or other belt system.

The holster features an integrated seam-sealed rain cover, a front pocket that’s large enough to hold a 150mm lens filter, an internal pocket for memory cards or lens cloths and an attachment point for monopods or other modular components. There’s also an additional divider included so you can pack another smaller lens or accessory if your camera setup doesn’t require all of the internal space.

$ (document).ready(function() { SampleGalleryV2({“containerId”:”embeddedSampleGallery_6315089572″,”galleryId”:”6315089572″,”isEmbeddedWidget”:true,”selectedImageIndex”:0,”isMobile”:false}) });

Think Tank Photo has provided two example setups that would fit inside the Digital Holster 150:

• Nikon D5 with 200–500mm F5.6 VR II attached
• Canon 7D Mark II with Sigma 150–600mm F5–6.3 Sport attached

The Digital Lens Holster 150 is available to purchase from Think Tank Photo for $ 109.75.

Articles: Digital Photography Review (dpreview.com)

 
Comments Off on Think Tank Photo releases Digital Holster 150, a waist holster for super-tele zooms

Posted in Uncategorized

 

CP+ 2019: Olympus shows super-tele zoom and 2.0 TC under glass

03 Mar

Olympus M.Zuiko Digital ED 150-400mm 1:4.5 TC1.25x IS PRO

Olympus announced its intent to make a 150-400mm F4.5 zoom back in January. There was a demonstration sample on show at CP+ in Yokohama. The Olympus M.Zuiko Digital ED 150-400mm 1:4.5 TC1.25x IS PRO has a name that matches its considerable size.

Features (of some sort) galore

The side of the lens shows five switches, which we’d expect to give direct access to AF/MF, IS, focus limiting and two other things. Possibly including the control to engage and disengage the 1.25x teleconveter that’s built in. Bringing the TC into the optical path turns the lens into a 187.5-500mm F5.6. That’s 375-1000mm F11 equivalent, if those numbers aren’t already big enough for you.

Sensibly sized

Considering the range it covers it’s a relatively compact lens. While it’s easy to point out that it’s an F9 or F11 equivalent, it’s worth remembering that there aren’t many 300-800mm/375-1000mm lenses for other formats. If you need that impressive reach in a lens that you can actually pick up, this will be one of the only options.

There’s a predictably large lens hood/bucket to go with it.

Who’s it for?

Olympus says the lens will be available in 2020 and is intended for sport, wildlife and bird photographers.

M.Zuiko Digital 2x Teleconverter MC-20

Also on show was a non-built-in teleconverter: the MC-20, which will be available in Summer 2019. This doubles the focal length of a lens it’s attached to, but at the cost of 2 stops of light. The MC-20 can be used with 150-400mm F4.5 TC1.25x IS PRO as well as the existing M.Zuiko Digital ED 300mm F4.0 IS PRO and M.Zuiko Digital ED 40-150mm F2.8 PRO.

Combined with the forthcoming zoom and its internal teleconverter, we believe you’d get a 375-1000mm F11 lens (equivalent to a 750-2000mm F22 lens on full frame). Though the combination seems rather specialist.

Articles: Digital Photography Review (dpreview.com)

 
Comments Off on CP+ 2019: Olympus shows super-tele zoom and 2.0 TC under glass

Posted in Uncategorized