Monthly Archive: January 2011

How to disable video gain on the Canon PowerShot SX1 camera

The Powershot SX1 is an amazing camera. I bought mine factory re-furbished, at a tremendous discount. But it has a two frustrating gotchas. Both are its poor low light capability due to its small image sensor and lack of good signal processing to clean up the noise. For stills, avoid shooting images above ISO 200 unless you have to; and...

“Aliasing” and “Moire”

The new “HDSLRs” do a fine job of shooting very nice HD video. But almost all are plagued by several problems that can ruin a good shot. These problems are “rolling shutter” (previously written about on this blog), and “aliasing” and “moire”. Aliasing tends to introduce fake detail into an image, fooling people in to thinking its a sharper image...

Using the Roku Internet video box with a USB Drive

I bought a Roku box last month and its been quite a bit of fun. When we watch TV, we now watch Vimeo or Netflix. There is a lot of great “user created” content – in fact, I have not watched satellite TV in six weeks now and plan to terminate our subscription this coming weekend. The new Roku box...

2011 Camera Predictions by Thom Hogan

2011 Predictions by Thom Hogan. Having just returned from the 2011 CES, I find myself in general agreement with his predictions. I also see he has a Spokane, Wa connection; didn’t realize that. Worth reading what Thom has to say – whether you agree or disagree. My sense from CES is that Sony and Panasonic are mostly heading in the...

Canon introduces new “low light” camcorders

Canon today introduced a new high end consumer camcorder line that features 1/3 sq in CMOS sensors – but having only 1920×1080 resolution. Rather than the typical gigapixel sensors being put into many consumer camcorders or still cameras, they have opted to go with a larger sensor having fewer pixels. This means each pixel’s surface area is larger and can...

CMOS versus CCD video imaging and the “Rolling Shutter” problem

Older video cameras used CCD-based image sensors. For various reasons, that I will explain in a moment, camera makers have largely switched to using CMOS-based image sensors on low end and even some low end semi-pro video cameras (like the Panasonic HMC-40). All of the new digital SLRs (DSLR) still cameras that also shoot video using high resolution CMOS sensors...