Posts Tagged ‘lensrentals’

LensRentals Cracks Open the Sony A7R, Gives Us a Peek at the Electronic Goods

The usual warnings apply:

  • Do not try this at home. This post was made by semi-trained, semi-professional repair technicians who sort of know what they’re doing.
  • The following blog post contains graphic images of the inside of a very nice camera. If such things make you squeamish, don’t read further.
  • No cameras were harmed in the making of this blog post. The camera has been fully reassembled and is functioning normally.

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Ever since we here at LensRentals first tested a Sony A7R, we were dying to take a look under the hood. Say what you will about Sony as a company, but they create some of the most elegantly-engineered camera bodies we’ve seen. Plus, the A7R is something of a groundbreaking camera, and we wanted to see how they crammed all that stuff into its little body.

Oh, and finally, we’ve wanted a closer look at how thick the cover glass over the A7R’s sensor is, since there is some evidence that it may affect the edge performance of certain adapted lenses. Read more…

Tamron 150-600mm Telezoom Shootout

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There’s been a lot of interest in the newly released Tamron 150-600mm f/5-6.3 SP Di VC USD lens. (For those wondering what the initials mean, VC means vibration control, the others all read ‘marketing drivel’.) But meaningless initials or not, with a price under $1,100, a superior range, and vibration control, this lens has created a lot of excitement.

Recently, the good people at Imatest have developed an ultra-high resolution, backlit chart printed on photographic film that is perfect for testing long telephoto lenses in the lab. The combination of a new, cool Imatest setup and a new, cool lens proved irresistible, so we decided to compare the new Tamron with the older Tamron 200-500mm, Sigma 50-500mm OS, and Canon 100-400 IS lenses. Read more…

Are Metal Mounts Any Better than Plastic? LensRentals Investigates

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Photography companies love catchword marketing. They like catchwords because photographers make assumptions about what those words mean, even though the words really don’t mean anything. So basically, they say nothing, but it makes you believe something.

Two of my favorite examples are “professional quality construction” and “weather resistance”. When I read those terms, my brain translates them to “Blah, blah, blah. Blah, blah.” They are subjective terms, just like ‘elegant design’ and ‘innovative styling.’ Read more…

A Bit of A7R Sanity: Rising Above the Trash Talk and Fanboy-ism with Actual Facts

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A while back I wrote a post I humbly called Roger’s Law of New Product Introduction, complete with the graph shown below. The release of the Sony A7R has demonstrated the accuracy of that post as few other releases have. Read more…

Sony a7R: A Rising Tide Lifts All the Boats?

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I have to admit I didn’t get too worked up when the Sony A7 and A7R were released. The last time I wrote about Sony it was how there were so few lenses for the NEX system years after introduction. So now we’re going to a system requiring a whole new lens mount. Sure the camera’s specs were interesting. But the idea of yet another camera body good mostly for shooting lenses on adapters wasn’t very exciting. So I planned to ignore it.

But my friends over at Imaging-Resource/SLRGear were waxing poetic when they talked about their testing of the A7. Then they started claiming that the lenses were really good, too, and sent me some rather shocking test results. Plus, I will admit when it arrived I kind of liked the look and feel of the camera. It’s a very small camera for a full-frame, but with a nice deep grip that felt good in my overly large hands. Sort of a retro appearance. So even though we were a bit backed up, Aaron and I decided to at least run some preliminary testing in our Imatest lab with the A7R. Read more…

Iceland Spar: The Rock That Discovered Optics

Dec 12, 2013 · Roger Cicala

Metabones Works Some More Magic With Its New Speedboosters for Blackmagic

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Metabones, maker of the impressive Speedbooster adapters is back at it again. When the Speedbooster first came out, I wrote about it being like magic, increasing the aperture and field-of-view of Nikon and Canon full-frame lenses mounted to NEX and micro 4/3 cameras, while maintaining or even improving image quality. Now they’ve brought the Metabones magic to the Blackmagic cinema and pocket cinema cameras. Read more…

Inspecting an ‘In Spec’ Lens

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I’m going to open a can of worms today. I’ve been getting more and more emails from people telling me the same story that goes like this:

I’ve got this lens. It’s awful. I’ve sent it in for adjustment and the service center tells me it’s ‘in spec’ and nothing is wrong with it. Am I crazy?

Read more…

There is No Such Thing as a Perfect Lens

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I get asked a couple of questions every time I publish a graph showing Imatest results for multiple copies of lenses like the one below. Most people understand that some copy-to-copy variation is inevitable in the manufacturing process. Most are surprised, though, at how large the sample variation seems to be. Heck, I was surprised at how large the sample variation was when I started doing this kind of testing. Read more…

LensRentals Launches LensAuthority as a Used Gear Outlet

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LensRentals is at the height of its popularity and still growing. About a week ago, we shared some stats that more than proved this, showing how a company started by one man and $5,500 dollars in 2006 is now a 42 person operation on track to bring in $13 million this year.

But if you think that LensRentals has reached a point where it is content to rest on its laurels, you would be wrong. The company has just launched a brand new site, LensAuthority, where it will sell off the used gear it is constantly turning over through the main website. Read more…