rollingshutter

How Sigma Could Make the fp Great

I have always admired Sigma. It wasn’t regarded in the same league as it is today for its lenses until the Art series came out, but Sigma’s digital cameras have always been singular in design and purpose. The family-owned company has never been afraid to try something new, and honestly, that’s something we need to see a lot more of in the photography world.

a9 III Sensor

Why the Global Shutter in the Sony a9 III is Such a Big Deal

It is difficult to overstate just how big of a deal the Sony a9 III is, at least on paper. As is always the case with press events, and especially ones where hands-on time is limited, pre-production firmware is installed, and shooting opportunities are cultivated, you should consume pre-release content with (many) grains of salt. Hypertension be damned.

Sony a9 III

Sony Announces a9 III, World’s First Global Sensor Full-Frame Camera

This year marks the 10th anniversary of the first Sony Alpha 7, the first Alpha full-frame interchangeable lens mirrorless camera. Sony is marking the occasion by announcing a breakthrough advancement in imaging technology -- the Sony a9 III, the first full-frame ILC to incorporate a global shutter image sensor.

How the Rolling Shutter Effect Works

Rolling shutter is the answer to why concrete bends, propellors break up, and trees turn to jelly when you're filming them while either you, or the object, is moving quickly in front of certain cameras.

This is How Cameras Glitch with Photos of Propellers

If you've ever photographed spinning airplane propeller or helicopter rotor blades with your smartphone, you may have found that the spinning blades were turned into bizarre shapes in the resulting photo. What you're seeing is distortion caused by a rolling shutter, when a CMOS sensor captures a scene by scanning across it very quickly rather than capturing the entire frame at once.

These Animations Show How CMOS and CCD Sensors Work and How They Differ

Want to see how CMOS and CCD image sensors work and how they differ from each other? Photographer and animator Raymond Sirí created a couple of simple animations showing the basic idea of how these two sensor technologies go about capturing light, reading it, and storing the information.

The animation above showing CMOS sensor tech was used in a trial against Canon, Sirí says.

The Math Behind the Rolling Shutter Phenomenon

I remember seeing the photo above on Flickr once, and having my brain melt slightly from trying to figure out what went wrong.

The issue was the propeller was rotating as the camera detector ‘read out’, i.e. there was some motion during the exposure of the camera. This is an interesting thing to think about, lets have a look.

What a DSLR’s Rolling Shutter Does to a Speaker Playing a 61Hz Tone

Here's another example of a strange effect caused by the shutter of a DSLR. YouTube user drummaboy5189 captured the above video by playing a 61Hz sound through his speaker and then pointing his Canon 6D at it while filming at 60 frames per second and 1/4000s shutter speed. What resulted is a "rolling speaker" effect.

Rolling Shutter Causes Plane to Drop Boomerang Bombs

The rolling shutter used by the majority of consumer CMOS sensors can do crazy things to photos and videos. The video above shows what an airplane propeller looks like when shot with a Nokia N95. The rolling shutter makes the plane looks as if it's dropping boomerang bombs that quickly disappear into thin air.