Category: Photo-tech

  • What Is ‘Global Shutter’? Part II (Sony A9III)

    This post is by Ron Dawson from The Online Photographer The new Sony A9III So it’s not like we’ve never had global shutters before. Most CCD (charge-coupled device) sensors worked that way, and most early digital cameras had CCD sensors. Today CCDs are still widely used, but mostly for practical uses like microscopes and other…

  • What Is ‘Global Shutter’?

    This post is by Ron Dawson from The Online Photographer The New Sony top-of-the-line “fast” camera, the A9 Mark III or A9III, is here. It went up on B&H this morning ($6,000). The camera is a technical tour-de-force, despite remaining surprisingly friendly to the hand and shoulder. The big news is that it has a…

  • Sensor Sizes

    This post is by Ron Dawson from The Online Photographer It’s a bit late in history for this topic. But this is probably how we should have standardized sensor sizes: just give the long dimension of the rectangle in millimeters. Would that be too confusing? Too tough to remember? Maybe. But I’ll bet not one…

  • The Contax RTS II (Part III)

    This post is by Ron Dawson from The Online Photographer [Ed. note: This post has been amended to add a paragraph about the fate of Yashica and Contax cameras, just below the header “Some things are not meant to be.”] – I mentioned in Part II of this three-parter that I audited a physics class…

  • Six Pentaxes

    This post is by Ron Dawson from The Online Photographer Following on from yesterday, Pentax Rumors has also claimed that “there will be a total of six different versions of the Pentax K-3 Mark III DSLR camera (jet black finish, a version with a modified shutter release button, a monochrome model, a gunmetal version, and…

  • SWIM: A Major New Development in Computational Photography

    This post is by Ron Dawson from The Online Photographer Guest post by Chris Kern What may be the next major development in the use of artificial intelligence to improve photography is currently the subject of a well-funded research program by major players in the camera and software industries, according to a friend of mine…

  • ‘Where Do You Go for This?’

    This post is by Ron Dawson from The Online Photographer Guest post by Luke Smith I was the one at imaging-resource.com who did the stultifying work of making the gajillion look-alike images, which allowed comparison of the capabilities of cameras. We even had a “comparometer.” I remember being excited by the amazing output of 12…

  • On Printer Machines and Klingon Cowgirls

    This post is by Ron Dawson from The Online Photographer Photographic terminology drives me buggy. It is not only poor to start with, but then it changes. A lot of terms that were correct and proper when I was young, even though they kinda didn’t make sense, are no longer known to young people now.…

  • Understanding Viewfinders (from the Archives)

    This post is by Ron Dawson from The Online Photographer [A “reprint” of an article I wrote in the early 2000s for my late friend Michael at The Luminous-Landscape. Actually, based on the illustrations, this might have been published first at Photography in Malaysia. I think it was also published…

  • A Short History of Viewfinders

    This post is by Ron Dawson from The Online Photographer Luke asked: “I’d like to hear more about that giant viewfinder on the [Sigma] fp. Do you like it?” I do. It’s not perfect, of course. No viewfinder is. I’ve always had a thing about viewfinders—and one way you can…