lens

DxO Labs tries making sense of camera lens sharpness

Aiming to make it easier for photography enthusiasts to evaluate photo gear, DxO Labs today announced a new method of measuring lens sharpness it hopes will make more intuitive sense.

The idea, called the perceptual megapixel, shows how much of a camera's original sensor resolution a particular lens can preserve when factors such as lens sharpness, optical defects, and sensor pixel size are taken into account.

One example the company provides: on a 21.1-megapixel Canon 5D Mark II, the Sigma 35mm F1.4 DG lens gets a score of 17.2 perceptual megapixels and the much higher-priced Carl … Read more

T-shirts let you wear a snapshot of camera history

Photography diehards and fans of printed T -shirts will like Dodge and Burn's latest camera-inspired collection. The New York-based company's latest Evolution TLR design highlights the history of the Twin Lens Reflex camera, a medium format film camera used in the '60s.

The site also offers a variety of other print designs, from the iconic Leica rangefinder camera to the classic SX-70 Polaroid film camera. Each shirt is printed using plastisol inks to create designs with textures that have a vintage and worn-out effect. … Read more

Canon's new midrange 24-70mm zoom gets stabilization

Two new higher-end but not top-end lenses will arrive in December, the $1,500 EF 24-70mm f/4L IS USM and the $850 EF 35mm f/2 IS USM, Canon said today.

The 24-70mm f4 lens, though not inexpensive by any means, extends a Canon tradition of offering intermediate models for enthusiasts and pros who don't necessarily want to pay more for top-end lenses -- in this case, the alternative is the $2,300 Canon EF 24-70mm f/2.8L II USM introduced in February, whose f2.8 aperture enables photography in low-light shooting and with a blurrier background … Read more

Repurpose paintbrushes to clean camera gear

Lens cleaning equipment such as blower brushes and compressed air can take up quite a bit of space in your bag. The folks at Digital Camera World have come up with a novel DIY way of keeping things compact by transforming paintbrushes into portable tools for cleaning off minute particles when shooting in dusty environments.

All you need is an inexpensive paintbrush that's readily available at any craft shop.… Read more

HiLO lens for iPhone and iPad has all the right angles

Smartphones have rarely been accused of being elegant cameras. Tablets are even more troublesome. Sometimes, it would be easier to hold your device flat and snap a picture. Try that now and you'll get a lovely shot of your feet. Try it with a HiLO right-angle lens, and you'll get a real photo.

The HiLO hides three lenses and a prism inside that allow the image to bounce into the correct part of your camera. An app is also part of the Kickstarter project, so you'll be able to quickly correct for the image mirroring caused by the prism.… Read more

Nikon matching Canon with 70-200mm f4 lens

When photo enthusiasts entering the digital SLR market ask me whether they should go for Canon or Nikon, one of the points I often raise is Canon's appealing choice of high-end but not top-end lenses.

Well, Nikon just undermined that potential selling point. At the Photo Plus Expo show today, it announced its AF-S Nikkor 70-200mm f/4G ED VR, a telephoto zoom lens that provides a competitive answer to Canon's superb EF 70-200mm f/4L IS USM.

Let's be clear here. These are still professional-grade lenses, and they aren't cheap. Canon's costs about $1,… Read more

iPhone 5 camera users reporting purple halo on certain photos

A purple halo seems to be the latest glitch affecting some iPhone 5 owners.

Detailed by forum users at tech review site AnandTech, the flaw reportedly occurs on photographs if you aim your iPhone 5 camera toward a bright light source such as the sun or an incandescent light. If you then move the camera so the light source is off screen, a purple halo effect can be seen through the camera. That effect also shows up on any pictures that are taken.

One poster displayed separate photos with an artificial light source and with the sun off screen, and … Read more

DIY macro lens for your phone's camera

I came across this tutorial last week that showed how you can turn an ordinary phone camera into something capable of capturing extreme close-up macro photos. You know, the ones where you can see the hairs on a fly's head.

After the dust settled on the iOS 6 release, over the weekend I dug through the junk drawer in my kitchen and found an old laser pointer. I then located a bobby pin in the bathroom and some painter's tape in the basement. I now had the three necessary ingredients and the time to see if this thing … Read more

Schneider widens range with SLRs, Micro Four Thirds lenses

COLOGNE, Germany -- Every 99 years or so, a company has to shake things up a little bit.

Thus it is that Schneider Kreuznach, a high-end lens brand founded in 1913 that's been focused on cinema, medium-format, and large-format markets, unveiled four lenses for more ordinary 35mm SLRs, three for Micro Four Thirds cameras, and even a polarizing filter for iPhones. The lensmaker, part of the Jos. Schneider Optische Werke, unveiled the lenses at the Photokina show here.

Its earlier lenses for conventional SLRs were the company's relatively exotic Super Angulon line, tilt-shift models that can enable perspective … Read more

Canon 200-400mm supertele lens due this year -- maybe

COLOGNE, Germany -- A year and a half ago, Canon announced it was working on a 200-400mm telephoto zoom lens with a built-in 1.4X extender. But since then, there's been nary a peep.

Well, there's a peep now, Canon shooters jealous of Nikon's 200-400mm will be pleased to know.

The plan is to release it this year, said Mike Owen, communications manager for Canon's professional imaging department in Europe. He spoke at a Canon press conference yesterday at the Photokina show here.

But Owen was quick to add a caveat: "We're anticipating that, … Read more