Category: Technical

Common photography aspect ratios and print sizes are arbitrary

Still photography and motion pictures have, over history, used aspect ratios such as 4:3, 3:2, or for printing 4×5, 8×10 and what not. These choices were arbitrary – based on practical design and implementation considerations of the time. The popular 8×10 paper size came from how fine paper was originally manufactured and sliced down to size by hand, in Dutch paper mills and corresponded to the equipment size readily handled by...

Using 2 cameras to create fake narrow depth of field images

Small sensor cameras – such as smart phones and point and shoot cameras – are unable to create significant blurring of the background or foreground. Narrow depth of field is mostly limited to large sensor cameras – or to long telephoto shots. But, two camera sensors may be used to measure depth in the scene. One camera is used for the actual photo and the second for depth.┬áParallax, or the difference...

Playing 3-D video games can boost memory

Playing 3-D video games can boost memory formation says a study from UC Irvine Source: Playing 3-D video games can boost memory formation, UCI study finds The study is published in the Journal of Neuroscience. (Go Anteaters! My undergrad degree in computer science was earned at the University of California, Irvine ­čÖé ) Related articles UC Irvine Celebrates First 50 Years With 52-Page Magazine Brain-computer link enables paralyzed California man to...

Canon announces 250-megapixel image sensor

Canon has today announced a new ultra-high resolution CMOS image sensor that packs approximately 250 megapixels into an area smaller than a United States postage stamp. Source: Canon announces whopping 250-megapixel camera sensor – TechSpot Related articles Canon’s New APS-H Sensor Manages to Squeeze 250-Megapixels in a DSLR Sized Sensor ISOCELL Technology: High Resolution Imaging in the Slimmest Devices Yet Toshiba expands backside illumination CMOS sensor range

Low light image quality test: Nikon 1 V2 and J1, Lumix GH-2 and GH-4

I tested┬áthe low light image quality of the Nikon 1 J1 (electronically the same as the Nikon 1 J2 and the┬áNikon 1 ┬áV1), the Nikon 1 V2, the Lumix GH-2 and the Lumix GH-4. The Nikon 1 is a 1″ sensor camera with a 10 MP image resolution and the V2 has just over 14 MP. The Nikon 1 is also an interchangeable lens camera. The Lumix cameras are micro-four thirds...

How important is lens sharpness?

Perhaps not as much as we’ve been led to believe:┬áLens Sharpness. Ken Rockwell points out that in most real world scenarios, lens sharpness is just fine. Today we pixel peep to the absurd dimension, finding limitations that may not matter. And once we find the limits, there are often simple work arounds – such as stopping down the lens by a stop. He also notes that sharpness tests are too often...