Camera Test: Canon EOS Rebel T3i DSLR and more!

Camera Test: Canon EOS Rebel T3i DSLR and more!	View this email online

	April 21, 2011 Breaking news from America's top photo magazines From the Forums: Are you having trouble opening/viewing/editing your RAW files? Our readers share their thoughts. Join and Contribute!

	Lab Test: Canon EOS Rebel T3i Canon's latest Rebel offers an articulated screen and wireless TTL control for off-camera flashes, a Rebel first. How To: Maximize Color by Shooting at Twilight Bring out that beautiful blue sky by setting up your shot right before the sun goes down. Gallery: Documenting Life in Nairobi, Kenya through Innovative Journalism A veteran photographer and writer join forces to bring a daily taste of normal life in Africa. X-Rite's Online Challenge Tests Your Ability to See Color How capable are your eyes when it comes to differentiating colors? Waste time at work while finding out. Photo of the Day Think your photos have what it takes to be named Photo of the Day? Then upload your best shots to our Flickr page. See the whole gallery here TECH SUPPORT Keep that Sensor Clean! Q. Recently this black dot started to appear on my photos from my Canon EOS Rebel XTi. I assume it’s some kind of dust spot, but I don’t want to go digging around the inside of the camera without knowing what I’m doing. A. Several editors here looked at the sample images this reader sent to us, and we immediately suspected a dust blob on the sensor—or, to be correct, the glass plate in front of the sensor. But rather than guess, we had Albanese bring his camera to the Popular Photography Test Lab, where Technical Editor Philip Ryan examined the sensor with a LensPen SensorKlear loupe. Sure enough, we found a pretty large piece (4–5mm) of matter that was also somewhat gunky—what we call, in technical jargon, schmutz. We were able to dislodge it with a handheld blower, but, as there was still residue on the sensor, we directed him to a camera repair shop to have it professionally cleaned. (We are wary of do-it-yourself cleaning in cases like this.) To avoid this sort of mishap, always keep a lens or body cap on your DSLR. Keep a rear cap on any lens not mounted on a camera. Avoid changing lenses in any adverse conditions or near sloppy eaters, and try to keep the rear of the lens and front of the camera body tilted downward while changing a lens. Should you find dust on the sensor plate, use a blower to remove it. Don’t try to remove persistent schmutz yourself—let the camera maker’s customer service department or a camera repair shop do it. Do you have Tech Support Question? Post it on our Facebook Page.

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New Gear: Nikon D5100 DSLR and more!

New Gear: Nikon D5100 DSLR and more!	View this email online

	April 7, 2011 Breaking news from America's top photo magazines From the Forums: So someone wants to buy one of your prints, how much do you charge? Our readers share their thoughts. Join and Contribute!

	Gallery: Nikon D5100 Sample Images We spent 24 hours shooting with Nikon's newest DSLR. Nikon D5100 DSLR Has a Swiveling Screen, Full-Time Video AF This new starter DSLR seems ready to rumble with Canon's T3i. Photo Contest: Childhood Enter your best representation of what it is to be kid for a chance to win some sweet gear! New Gear: Lensbaby Composer Pro A new metal body offers smoother swiveling and more accurate focusing. Photo of the Day Think your photos have what it takes to be named Photo of the Day? Then upload your best shots to our Flickr page. See the whole gallery here TECH SUPPORT Macro Factor Q. The February 2011 issue’s “10 Things You Should Know About Lenses” states that a 1X magnification gives you a tighter closeup than a 0.67X magnification. If that’s so, why does the article imply that a magnification of 1.5X is not a true macro lens? And what exactly is life-size magnification? A. There are two common ways of expressing magnification—as a ratio or as a multiple—and perhaps we could have been clearer in distinguishing them. When a magnification is given as a ratio of 1:2, or 1:3, or 1:4, it’s the same as stating that the magnification is 1/2, or 1/3, or 1/4 life-size. Expressed as multiples, these would be 0.5X, 0.33X, or 0.25X, respectively. We stated that a magnification of 1:5 does not qualify as true macro in our book; this would be a 1/5 life size, or 0.2X, not 1.5X. At life-size magnification (1:1 or 1X), the image of an object projected onto the sensor or film is the same size as the object itself. Example? A photograph of a 24x36mm U.S. postage stamp that filled the 24x36mm sensor of a full-frame DSLR would be at 1:1 magnification. At greater than life-size magnifications, the image projected by the lens onto the sensor exceeds the size of the object being photographed. Case in point: Canon’s 65mm f/2.8 MP-E Macro can focus at up to five times life size, which would be expressed 5X or 5:1.. Do you have Tech Support Question? Post it on our Facebook Page.

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