Here's the best argument I've seen for (and against) legalizing digital mashups. YouTube contributor StSanders took concert video clips of guitar heroes like Clapton, Santana, and Van Halen and replaced the guitar solos with hilariously bad plunking. (Plus other noises, as you can hear here): The sync is amazing. But what's especially funny is that StSanders's soundtrack manipulation is so...

It's remarkable what you can do in post-processing. Compare my original conversion from the RAW of my Yosemite Dreams (far below) with a more recent version (immediately below) I created in Photoshop for a special project. (There's actually no comparison to either version with the far duller look of the original RAW file that appeared when I first looked at...

Walking along the Marin Headlands cliffs between Rodeo Beach and Tennessee Beach, I was struck by the brightness of the breaking waves in the sunset light against the darkness of the shore in shadow: Breaking Wave, photo by Harold Davis. View this image larger. Depth of field was not an issue. I spot metered for the brightness of the waves,...

The smaller the aperture (opening in the lens), the greater the depth of field (the distance in front and behind a subject that is apparently in focus). The aperture designated by the very small f-stop f/64 provides much greater depth of field than the far larger aperture of f/1.4. Small apertures with great depth of field are used to create...

I just got a call from a blind man who liked the sound of my podcast. He asked how he could get started podcasting. Would it require expensive equipment? I told him that all I used was a USB mic and some software. (In my case, Ableton Live, BIAS Peak, and Izotope Ozone, but there are plenty of free options...

I frequently moderate panel sessions at digital music/media industry conferences. Many are regular annual (or semi-annual) events that have been going on for years. Every once in awhile, a new one pops onto the horizon. One such event is Play Digital, a one-day conference held at UC Berkeley (this year on SAT October 27th), focused on uniting forward-thinkers in digital...

I shot these two photos of a dahlia to illustrate the impact of aperture on depth of field. The photo immediately below, with a large aperture of f/4, has minimal depth of field, while the photo far below with a small aperture of f/32 has much more depth of field. The flower is in focus in both photos. In the...

When I worked in Silicon Valley, I realized after a short while that a big part of my job as a manager amounted to finding ways to help people be creative. After all, if you have a collection of very smart employees, it's wasteful to just tell them what to do - they probably know more than you do about...

Just in time for annual Talk Like a Pirate Day, I got this disturbing note from someone who read my "How to Stop Music Piracy" blog: I recently found an area manager of a store selling illegally produced CDs, mostly dance club mixes by Hex Hector and people like that. He offered ten songs per CD. He makes a...

A reader of my Photoblog 2.0 writes: "I notice that in more than one of your photos you use high f-stop values. Your results look great, despite what I've read about diffraction problems occurring at such small apertures." The reader is perfactly correct on both counts. I do often use small apertures in my macro photos. For example, the photo...