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Sony RX10 IV Minimum Focus Distance

I have just uploaded to YouTube a short video that illustrates one possibly confusing point about the minimum focus distance of the Sony DSC-RX10 IV camera. Specifically, that minimum distance is longer in the middle of the camera’s zoom range than it is at either the wide-angle or telephoto end of the zoom range. I came across this fact while writing my recent book, Photographer’s Guide to the Sony DSC-RX10 IV, and I thought it was worthwhile to post a video that shows how this fact affects the camera’s focusing behavior.

Here is the link to the video:

Tethered Shooting with the Sony DSC-RX10 IV Camera

I have just put together a short video to illustrate the procedure for doing tethered shooting with the Sony RX10 IV camera, one of the topics discussed in my recent book, Photographer’s Guide to the Sony DSC-RX10 IV. The link to the video is below:

Sony RX10 IV Book is Now Available in Downloadable Versions

As of today, the newest camera guide book from White Knight Press, Photographer’s Guide to the Sony DSC-RX10 IV, is available for purchase in downloadable versions. You can get a bundle of all three electronic files (PDF, iPad, and Kindle) for $9.95 through this site, or, if you prefer, you can purchase the book in an individual format through one of the major online sellers, such as Amazon, iBooks, Google, Kobo, or Barnes and Noble Nook. For details, please see the book’s main information page at this site.

Infrared Photography with Sony RX10 IV Camera

I am in the process of finishing my guide book for the Sony DSC-RX10 IV camera, which I hope to have published by mid-December. Today I checked to see how well the camera does at taking infrared photos using a Hoya R72 infrared filter. (The camera uses a 72mm filter, by the way, coincidentally the same number as the filter number.)

Of course, the camera is not designed for infrared photography, so you need to use long shutter speeds to let enough infrared light in through the dark red filter. So, this type of photography is really only suited for stationary subjects such as landscapes. It works best with green trees, grass, and the like, along with blue skies and clouds. But my tests showed that the camera can take this sort of infrared photograph. I am posting an example here, which is also included in my upcoming book. This image was taken in Manual exposure mode with a shutter speed of 4 seconds at f/5.6 and ISO manually set at 1250.

Panasonic ZS70/TZ90 Book Now Available for Sale in Paperback Format

As of today, the newest camera guide book from White Knight Press, Photographer’s Guide to the Panasonic Lumix DC-ZS70/TZ90, is available for purchase in a paperback edition. This version of the book is 8.5 by 11 inches (216 by 280mm) in size, and has 203 pages of content, including more than 450 full-color images and illustrations.  It has a full index and table of contents. The printed book, which is available for $24.95 in the U.S., includes the same information contained in the PDF and ebook versions, which are available for purchase through this website as well as through online sellers such as, the Google Play Store, Kobo Books, the iTunes Store, and others.

For more information or to purchase the book, please see the title’s main information page at this site.

A Technique for Macro Shooting with the Sony RX100 III Camera

I have received an interesting email message from Ron Pidot, a reader of my guide book for the Sony RX100 III camera, explaining how he used a novel approach to macro shooting with that model. Ron indicated that he did not mind sharing his technique with others, so I am posting the information here for use by anyone who would like to experiment with high-quality macro photography with this Sony model. It should work with other cameras in the RX100 family as well, though it has only been tested with the RX100 III. Here is what Ron explained:

“I thought you might be interested to know that I have been successful in shooting macro with the addition of a reversed Canon 50mm f/1.8 lens mounted on the 49mm adapter with a reversing ring instead of the usual close-up filters. I use manual focus with the aid of a focusing rail that adjusts front to back and left to right.  There is no discernible vignetting when zooming to 140mm. with the “clear image” zoom  setting. The  images are processed with the Photoshop Elements 11 Photomerge option using layer masks to achieve focus stacking. My subjects (small screws, dead houseflies and tiny shells) have ranged in size from 4mm-10mm in length. I lighted the subject with the YongNuo 560 IV strobe you mentioned, using the pop-up flash to trigger the slave.

Insects are not abundant now but I managed to capture an earwig about 25mm long and it filled the LCD screen. Perhaps your readers (if they don’t already know) might like to add this capability to other options for macro photography.”

Sony RX10 III Book Now Available in Paperback

As of today, Photographer’s Guide to the Sony RX10 III, recently published by White Knight Press in ebook formats, is  also available in a paperback edition. The book is currently available through for $24.95. It will become available at other Amazon sites worldwide within the next few days or weeks, in addition to online sellers such as

For a direct link to the book’s page at, please click on this link.

For general information about the book, please visit the book’s main information page at this site.

Sony DSC-RX10 II Camera Guide Book is Now Available in Downloadable Versions

Sony RX10 II Cover for FastSpringI have just finished posting for sale the ebook versions of Photographer’s Guide to the Sony DSC-RX10 II, a follow-up to my earlier book on the RX10. The new book has 318 pages in the printed version, and more than 450 color photographs or illustrations. The book covers all features, menus, controls, and functions of the RX10 II camera. For more information, please see the book’s main page at this site.

Note About Problem with Ordering Sony RX100 IV Book

For a short time over the past day or two, there was a problem with the system for ordering the new guide book for the Sony RX100 IV camera. Because of a mistake in updating this website, customers who tried to purchase the bundle of the PDF and two other downloadable versions of the book were directed to the site for a particular seller that sells only one downloadable version of the book. The problem was fixed early on September 13 after a customer brought it to my attention. If you experienced this problem, please send a message to with the details, and we will get the proper files sent to you.

Please note, though, that I will be out of the office for a few days for a medical procedure starting on September 14, so it may take several days for you to receive a full response.

— Alex White