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Posts Tagged ‘mirror’

Tokina’s new 400mm F8 mirror lens for full-frame, APS-C mounts will ship in August

20 Jul

Tokina has announced the upcoming release of its new SZX Super Tele 400mm F8 Reflex MF, a mirror (or reflex) lens for select full-frame and APS-C camera systems.

The 400mm F8 lens manages to pack an impressive focal length into a relatively compact frame thanks to its catadioptric design. Usually reserved for telescopes, this design choice makes the smaller design possible, but at the cost of having the signature ‘donut’ bokeh, the lack of autofocus and having a fixed aperture.

The lens is constructed of six elements in five groups, offers a 1:2.5 magnification ratio and measures in at just 355g (11.82oz). It’s 74mm (2.91”) diameter and 77mm (3.03”) in length.

To make the lens as versatile as possible, the SZX Super Tele 400mm F8 Reflex MF has a 0.75mm pitch and 42mm thread mount that can be used with adapters to work with nearly any camera system. In addition to offering the base lens without an adapter, Tokina is also selling versions with included adapters for Canon EF, Nikon F, Sony E, Fujifilm X and Micro Four Thirds camera systems.

Below are a few sample photos taken with the lens, provided by Tokina:

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Tokina says the lens is set to launch on August 7, but no pricing information has been given at this time. You can find out more about the lens and its design philosophy on Tokina’s product page.

Articles: Digital Photography Review (dpreview.com)

 
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Canon patents 400mm F5.6 catadioptric ‘mirror’ lens

16 Dec
This diagram of the light path through Canon’s newly-patented 400mm catadioptric lens shows how the mirrors help to ‘fold’ the light path and decrease the size of the lens.

A new Canon lens patent out of Japan has been raising eyebrows around the photo community this week. The patent describes a 400mm F5.6 lens, which wouldn’t necessarily be newsworthy… except that it’s a catadioptric lens (also known as a ‘mirror’ or ‘reflex’ lens).

Catadioptric lenses went ‘out of style’ so-to-speak many years ago, but for a time they offered economical and compact alternatives to standard long telephoto lenses. The optical design of these lenses use mirrors to both ‘fold’ the optical path and magnify the image coming in, allowing for a far more compact design.

Take, for example, this Vivitar Series 1 600mm F8 catadioptric lens:

Vivitar Series 1 600mm f/8 Solid Catadioptric Lens | Photo by pointnshoot (CC BY-SA 2.0)

Other advantages of a catadioptric lens design includes very nearly eliminating chromatic aberration and off-axis aberration; but, of course, this kind of lens design doesn’t come without its drawbacks.

There are two main issues, both of them caused by the central mirrors causing an obstruction in the middle of the lens.

The first of these is that you can’t use a standard diaphragm aperture system, a problem this Canon patent seems to ‘solve’ by using a variable density ‘electrochromic’ filter to ‘stop down’ the lens—although this will obviously not have any impact on depth of field.

The second problem is the donut-shaped bokeh produced by catadioptric lenses:

Donut Bokeh Example | Photo by Hustvedt (CC BY-SA 2.0)

In the end, it seems manufacturers (or consumers) decided that the drawbacks of catadioptric lenses were not worth the ultra-compact design. But as more and more photographers seek to lighten their kit, maybe Canon sees an opportunity to bring the ‘mirror lens’ back into public consciousness.

Articles: Digital Photography Review (dpreview.com)

 
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MAD Architects Redesign Turns Ugly Paris Tower into Giant City-Scale Mirror

03 Oct

[ By WebUrbanist in Architecture & Offices & Commercial. ]

Tall, dark and brooding, the infamous Maine-Montparnasse Tower is an unexciting skyscraper, especially by Parisian standards, but that could all change if MAD Architects converts it into a city-scale mirror. Their renovation proposal employs clever optical tricks to reflect and invert the surrounding cityscape.

When it was built, Montparnasse was the tallest building in France and heralded as a technological achievement. But unlike the Eiffel Tower, which was controversial at first but became a symbol of the city, this skyscraper never gained iconic status — in fact, it led urban building heights to be capped at seven stories. Some quip it has the most beautiful views in the city, in part because those views don’t include the building.

MAD Architects aims to change perceptions of the tower and its role in the city using concave glass panels tilted at an angle to create reflections of the surrounding built environment.

Viewers would be able to see surrounding streets, roofs and buildings in its mirrored facade. In a way, the resulting design both blends into the environment while also highlighting the beauty of the French capital and showing it from generally unseen angles.

“Today, we cannot really demolish this building and the historical regrets it stands for,” explains one of the architects behind the proposal, “but we can establish a new perspective to re-examine and think about how humanity can co-exist and interact with the tower and its environment, to bring meaning to our hearts.”

Perhaps unfortunately, while the firm was shortlisted in a redesign competition, another team was chosen to renovate the structure before the upcoming Olympic Games. Still, the design idea is out there, and another city might have its own ugly tower in need of transformation.

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[ By WebUrbanist in Architecture & Offices & Commercial. ]

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Posted in Creativity

 

Watch a mirror, LED, razor and a camera make the invisible visible

16 Jun

If you have a camera and a long lens, then you’re halfway toward a Schlieren photography setup. YouTube channel Veritasium demonstrates the effect in the video above, essentially revealing gasses and airflow normally invisible to the human eye. All it takes is an optical-grade concave mirror, an LED, a camera on a tripod with a telephoto lens and a razor blade.

What the camera sees with everything aligned is actually the slight differences in the refractive index of whatever’s in front of the mirror. If you light a match in front of the mirror, light from the LED will change direction slightly differently as it passes through the warmer and cooler air around the flame.

We don’t normally perceive those differences, but this setup reveals them as lighter and darker spots to the camera. The same thing happens with, for example, butane escaping from a lighter. Light passes through it at a slightly different angle than the air around it, and the Schlieren rig captures those slight differences.

Suddenly, it’s possible to see the heat displaced when you rub your hands together, or worse, the stuff that flies everywhere when you sneeze. It’s pretty darn cool, especially when played in slow motion as in the video above.

Articles: Digital Photography Review (dpreview.com)

 
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23 Remarkable Mirror Images of Reflections

08 Jun

Mirrors are not the only things that can provide a good reflection. Look around and see what other things can provide a good mirror image.

These 23 images are great examples of how to photograph a reflective surface and reflections creatively. Enjoy.

By Jacob Surland

By Glenn Simmons

By M.G.N. – Marcel

By Pablo Fernández

By Bruce Irschick

By Elizabeth Haslam

By Rüdiger Stehn

By Jim Choate

By Michael Levine-Clark

By Ken Douglas

By Chris Sorge

By josef.stuefer

By Bernat Casero

By Ramesh SA

By Dianne Lacourciere

By Chrissy Wainwright

By Arild Storaas

By Max Milkovitsch

By Theophilos Papadopoulos

By Mario

By Susanne Nilsson

By Laurent Ribot

By ANDY ARCIGA ( www.arcigaandy.com )

The post 23 Remarkable Mirror Images of Reflections by Darlene Hildebrandt appeared first on Digital Photography School.


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Fujifilm Instax Mini 9 launches with selfie mirror and close-up lens attachment

29 Mar

Fujifilm has announced the Instax Mini 9, a new instant camera that has launched in five colors: Lime Green, Flamingo Pink, Smoky White, Ice Blue, and Cobalt Blue. The Instax Mini 9 builds upon the company’s Instax Mini 8, bringing with it a selfie mirror as well as a new close-up lens attachment enabling photographers to snap photos as close as 35cm / 14in.

Fujifilm says the ‘popular’ features from the previous model are rolled over into the Instax Mini 9, including auto exposure. The camera chooses the optimal brightness setting for any given snapshot, highlighting the chosen setting by illuminating one of four lights corresponding the following settings: Indoors, Cloudy, Sunny (overcast), and Sunny (bright). The user then manually switches the dial to that setting.

Other features include a 0.37x viewfinder with target spot, an automatic film feeding system, flash with an effective range from 0.6m to 2.7m, and support for two ordinary AA batteries. A pair of AA batteries can power the camera through approximately 10 Instax Mini film packs before needing replaced.

The Instax Mini 9 will launch in the U.S. and Canada next month for $ 69.95 USD and $ 99.99 CAD, and then in the U.K. in May for £77.99.

Articles: Digital Photography Review (dpreview.com)

 
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24 Reflective Mirror Images to Make You Look Twice

06 May

Kids love a good puddle to splash in – photographers love them for a different reason – reflections.

In this collection of images have a look at how these photographers captured reflective surfaces in creative ways:

Darlene Hildebrandt

By Darlene Hildebrandt

Nick Kenrick

By Nick Kenrick

Theophilos Papadopoulos

By Theophilos Papadopoulos

Karol Franks

By Karol Franks

Jos Van Wunnik

By Jos van Wunnik

Highlights6

By highlights6

ANDY ARCIGA ( Www.arcigaandy.com )

By ANDY ARCIGA ( www.arcigaandy.com )

Jon Wallach

By Jon Wallach

Miroslav Petrasko

By Miroslav Petrasko

?Jin Mikami?

By ?Jin Mikami?

Mario

By Mario

Darlene Hildebrandt

By Darlene Hildebrandt

Stefano Corso

By Stefano Corso

Jody Sticca

By Jody Sticca

Loïc Lagarde

By Loïc Lagarde

Neil Howard

By Neil Howard

Davide D'Amico

By Davide D’Amico

Thomas Hawk

By Thomas Hawk

?ethan

By ?ethan

Brett Kiger

By Brett Kiger

Phil Whitehouse

By Phil Whitehouse

Thomas Hawk

By Thomas Hawk

Roman Kruglov

By Roman Kruglov

Moniek Van Rijbroek

By Moniek van Rijbroek

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The post 24 Reflective Mirror Images to Make You Look Twice by Darlene Hildebrandt appeared first on Digital Photography School.


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Review : WD MyCloud Mirror Personal Cloud Storage

14 Feb

Some would argue that, these days, it’s just as important to backup our mobile (camera) devices for the very reason we backup our regular digital photographs. Here’s my take on doing just that with my review of the My Cloud Mirror.

wdfMyCloud_Mirror (1)

MyCloud Mirror Personal Cloud Storage on Amazon

Even though I have my camera with me most of the time, I still have my iPhone (or your Android or Windows thing or heck, even your Blackberry) with me about 99.8% of the time. That’s maybe more than most people as my 9 to 5 is social media and photography, so I tend to have the phone near, and as a result, I take a lot of photographs with the thing.

It’s the iPhone 6 Plus, it has a half decent camera and as a result I take a lot of photos, videos, time lapse sequences, slow motion videos, etc. The bottom line is, I use it to create a LOT of content, and I know a lot of you guys do too. The theme with my other storage and backup related articles here on dPS has been “don’t lose stuff when you don’t need to!” and really, the same goes for your phone. You use it to create memories, even if you can’t print those memories out at A1 size (23.4 x 33.1″), they are still moments that you might like to remember. (Or they’re just photographs of every coffee you’ve ever had and really, you should just stop that!*)

wdfMyCloud_Mirror

As ever, without slapping down a whole page of technical jargon that you really don’t understand, I shall explain the WD MyCloud Mirror in the easiest way I can. You unbox it, plug it into power and to your network, (Cat5 cable between your MyCloud and your internet modem / router) follow the configuration instructions, and within minutes (unless you really are very very bad at things with buttons and knobs) you will have a storage drive that is both connected to your computer on your home network / wireless, and you will have a storage “cloud” that is available to you on your phone (apps available in Google Play and iTunes app store) and via any internet connected browser.

Maybe the skeptic in you is saying, “but I still have to remember to actually backup my phone!” Actually, and you knew I’d say that, it does it automatically (make sure your app settings are right) so you can shoot on your phone, and have your photos automatically transferred to your MyCloud Mirror (you control if it does it all the time or only when you’re connected via Wifi to avoid crazy mobile data bills).

Simon_Pollock_WD_MyCloud_Review

My ultimate test of the WD MyCloud Mirror was on a recent trip to Fiji for a photography workshop. I was using a Fijian sim card in my iPhone and had wifi at random hours of the day. I set the MyCloud app to upload my iPhone content when on Wifi, and that’s exactly what it did – seamlessly! My wife could navigate to a website back in Melbourne and see what I’d photographed on my phone, and show my boys where I was – it was great. Now, you can do that using a camera, card reader, and a laptop with wifi (or a hundred other ways) but for those moments that I simply whipped out my phone and snapped a memory, they were preserved and immediately available for others to see (or to not see, depending on your security settings, obviously).

Some specs for you to wrap your head around

  • Keep your content in one, double-safe place
  • Get abundant, dual-drive storage with access from anywhere
  • Save everything with twice the protection using Mirror Mode (RAID 1-default)
  • Easily transfer to and from Dropbox™ and other cloud accounts

You can use the MyCloud Mirror with the following

  • Windows® 8.1 or earlier, Windows 7, Windows Vista® or Windows XP (32 bit) SP 3 operating systems
  • Mac® OS® X Mavericks, Mountain Lion™, Lion™ or Snow Leopard® operating systems
  • DLNA®/UPnP® devices for streaming
  • Router with Internet connection

Supported browsers:

  • Internet Explorer® 8 or higher
  • Safari® 6 or higher
  • Firefox® 21 or higher
  • Google Chrome™ 27 or later on supported Windows and Mac OS platforms

What’s that about a mirror?

You may also have picked up on the word mirror in the name of the MyCloud, it does indeed have two disks in it and it mirrors your data. While you’re backing it up from your phone, you’re also making a redundant copy of it onto the second drive, so if disk number #1 should fail, disk #2 will still have all of your duck-faced selfies (be honest, who doesn’t love a duck-faced selfie). Here’s a picture of that happening, just perchance I’ve confused you with my techno-babble.

wdfMyCloud_Mirror (3)

In summary, I totally love the WD MyCloud Mirror (I have the 4/2 (mirrored) TB version). I can’t recommend it enough for those of you that are half serious about your phone photography, or even just half serious about storage and content access while you’re anywhere with an internet connection.

The WD MyCloud Mirror has been online for three months to test its reliability. It’s been online, and available all of that time, without a hiccup. I was sent the unit for test and review purposes, and will always give an unbiased opinion of a product. I award the MyCloud Mirror Five stars for simplicity in setup and usage, as well as (three months) constant reliability.

*there’s a good chance that sentence was about, and directed at me :) 

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The post Review : WD MyCloud Mirror Personal Cloud Storage by Sime appeared first on Digital Photography School.


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Canon 7D mirror box filmed at 10,000fps

31 Jan

The Slow Mo Guys do just what their name implies – record slow motion videos. In a new episode they use a Phantom Flex to capture the Canon 7D’s mirror box and shutter mechanism being triggered at a variety of shutter speeds. The results are pretty darn cool. See video

Articles: Digital Photography Review (dpreview.com)

 
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Casio launches EX-MR1 selfie camera with lens behind a mirror

05 Dec

Casio has taken the selfie camera a logical step forward with a new design. The Casio Exilim EX-MR1 uses a lens behind a large mirror so that shooters can check their appearance as they take a picture. The camera, which the company seems to be targeting at women, is a 14MP compact camera with an extra wide angle 4x zoom that starts at 21mm equivalent – a focal length Casio says is optimal for taking self-portraits. Read more

Articles: Digital Photography Review (dpreview.com)

 
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