Posts Tagged ‘problem’

Some Nikon D600 DSLRs Not Closing to the Apertures They’re Supposed To

A little earlier today, we reported on how Sohail Mamdani of BorrowLenses had discovered that one particular Nikon D600 he was testing was consistently overexposing photographs by two stops. After searching long and hard for the cause, he stumbled upon the culprit: the D600 wasn’t closing the aperture blades to the correct opening size.
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Strange Exposure Differences Between the Nikon D600 and Other DSLRs

Gear reviewer Sohail Mamdani over at BorrowLenses was testing the Canon 6D and Nikon D600 last week by shooting nighttime photos of San Francisco Bay, when he discovered something strange: the DSLRs exposed the scene differently even when all the settings were identical in full manual. The photograph above was captured using the D600 at f/8, 30s, and ISO 100 (in JPEG mode).
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Rumor: Canon 200-400 f/4L IS 1.4x Delay Caused by Design Flaw and Redesign

Way back in February 2011, Canon announced that it is developing a new EF 200-400 f/4L IS 1.4x super-telephoto lens. Since then, there hasn’t been much news on when we might finally see the lens on store shelves, and Canon has issued a couple of press releases stating that it has been delayed. Rumors are now emerging that Canon had to go back to the drawing board with the lens in order to resolve a design flaw that had been reported during tests.
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The Nikon D600 Has Sensor Dust Issues

We tend not to get too excited about sensor dust problems at LensRentals; we clean sensors on every camera after every rental, so it’s just routine. When we started carrying the Nikon D600, they all arrived with a fair amount of dust, but that’s pretty routine, too. Manufacturing and shipping can be a dusty experience.
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It’s Not Just Rebels: Canon Warns Some Wireless File Transmitters Flake Too

Have you been getting rashes on your skin, or redness and irritation in your eyes? Do you own a Canon WFT-E7A Wireless File Transmitter? Those two things might be related. If you remember, a couple of months ago, Canon recalled tens of thousands of Rebel T4i/650D DSLRs due to an issue with their rubber grips that caused allergic reactions. The rubber had been overloaded with too much of certain ingredients, leading to an unexpected chemical reaction that caused white flaking. It turns out the faulty rubber was used beyond the Rebel: Canon has just released a product advisory warning that its file transmitter may have the same flaw.
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Apple: iPhone 5 Purple Flaring Is Normal, You’re Just Holding it Wrong

Remember this photograph tweeted last week by @weaksauce12? It shows the strange purple flaring reported by many iPhone 5 users, which is being called everything from “purple haze”, to “the Hendrix effect”, to “Purplegate”. Fingers were pointed at everything from the phone’s new sapphire lens to the infrared filter — or supposed lack of — inside.

If you were patently waiting for a fix, you’ll be disappointed to know that there doesn’t appear to be one on the horizon: Apple is saying that the excessive purple flaring behavior is “normal”.
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DSLR Acting Strange? Try Changing the Internal Clock Battery

If your DSLR ever dies in your arms or starts acting funny, here’s a simple thing to check before shelling out money to have it examined by professionals: the camera’s internal clock battery. Redditor Aero93 writes,

So my camera died out of nowhere. No matter what I did and tested, it wouldn’t turn on. Canon quoted $400 to check the cam + labor parts. Independent repair guy was around $250. It was too much for me. I decided to tackle the problem on my own. I got the manual online. Started taking the camera apart. I got stuck on one thing.

After that, I started asking around on a forum. Somebody suggested I check the internal clock battery, I didn’t even now it existed and its right next to the regular battery. I went out and bought a new one. Boom, camera fired right up.

The internal clock battery is the one that keeps the clock in your camera running even when the main battery is removed. They usually cost about a buck each.
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Zombie Photos No More: Facebook Now Actually Removing Deleted Images

Remember Facebook’s “zombie photo” problem? Photos that users deleted on the website actually remained very much alive on Facebook’s servers, available to anyone who held on to the images’ URLs. Earlier this year Facebook acknowledged the issue and promised changes that would ensure permanent deletion within 45 days.

Now, it appears that Facebook has honored its word. The company tells Ars Technica that deleted photographs are now vaporized from the web within 30 days — a claim that Ars has confirmed through tests.
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The Autofocus Noise of Canon’s New 40mm Pancake Lens

Canon made a splash earlier this month by announcing its first EF pancake lens, the Canon 40mm f/2.8 STM. If you’re considering this lens, one thing you should know is that the autofocus noise may interfere with your videos unless you use an external mic. In his review of the lens, photographer Dan Carr writes,

Here then is probably the biggest problem with this lens. With any other Canon lens, if you think the AF motor is making too much noise you can either switch to manual focus mode to disengage the focus motors or with Canons l-series lenses and their ultrasonic motors you simply just turn the focus ring manually yourself and it doesn’t engage the noise producing AF motor. Unfortunately though, the STM motor works in a different way […] Even when you switch to manual focus mode, rotating the the focus ring engages the STM motor to move the lens elements as the whole thing is a focus by wire system. This means that there is absolutely no way for you to get a silent video. Whether you let the camera do the focusing, as with the new cameras like the 650D/T4i , or whether you do it yourself, you are going to get the background hum as demonstrated in my video

It’s an interesting quirk, since the STM technology is meant to provide smooth and quiet focus for video recording. It may be quiet (here’s a comparison with the 50mm f/1.8 II), but you can’t eliminate it completely. On the flip side, the lens is attracting rave reviews.

(via Dan Carr via Foto Actualidad)

Canon 5D Mark III “Light Leak” Issue Alters Exposure by 1/3 of a Stop

A quick update on the “light leak phenomenon” on the 5D Mark III that Canon confirmed last week: after emailing Canon about the issue recently, photographer birdbrain received the following response:

Further to your enquiry we would like to inform you that we very recently (in April) have become aware of this and is now a known issue with the EOS 5D Mark III model. The AE sensor in the camera detects the light from the LCD panel when it is turned on and the exposure value will be altered. The change is not significant as it will be altered by approximately 1/3rd of a stop but can be noticeable. You can continue to use your 5D Mark III and the LCD screen can be turned off to receive the correct exposure.

The video above shows examples of what this 1/3 stop difference does for nighttime photographs. The issue definitely isn’t a huge one (don’t cancel your orders), but the 5D Mark III is a $3,500 camera and it’ll be interesting to see how Canon decides to deal with this flaw.

(via DPReview via Canon Watch)