If the term "stroboscopic" is unfamiliar to you, you're not alone. My guess is that many Canon 580EX / 580EX II / 600EX-RT owners have yet to explore this intriguing feature found in their Speedites.
So what is stroboscopic flash? Fortunately, the 600EX-RT manual provides a good description in the feature's introduction:
"When using stroboscopic flash with a slow shutter speed, you can shoot multiple successive movements within a single picture, similar to stop-motion pictures.
In stroboscopic flash, set the flash output, number of flashes, and flash frequency (number of flashes per second = Hz)."
As outlined above, stroboscopic – or MULTI, in Canon's terminology – flash allows for the Speedlite to fire several continuous flashes within a specified duration of time, which is beneficial in illustrating movement by exposing the subject with individual burst of lights as it travels across the frame during a single exposure.
What kind of subjects work well when captured with stroboscopic flash? Dancers and falling/bouncing objects are commonly utilized, but just about anything that moves will work. Keep in mind that a dark shooting environment is necessary to achieve optimal results because any constant/ambient light will cause motion blur to be captured between flash bursts.
To set up your flash for stroboscopic/MULTI mode, press the Mode button until "MULTI" is displayed on the Speedlite's LCD panel. If the flash is set to Slave mode, you may need to hold the Mode button for a few seconds until it switches out of ETTL mode. Note: In Slave mode, the MULTI label will blink.
Next, you'll need to set the flash power, number of total flashes and number of flashes per second (Hz).
In the illustration above, the flash is set to fire 8 times at a rate of 12Hz. In this situation, the flash wil be firing for 2/3 of a second, meaning that the camera's shutter speed will need to be set to 2/3 second or longer in order to capture all 8 of the individual flash bursts.
Note that as you use higher flash powers, the number of flashes you can fire in succession begins to dwindle. That means that there's a limit to how many continuous flashes you can expect to achieve at various power levels, with higher power level use allowing for fewer continuous flashes. Once again, the 600EX-RT's manual comes to the rescue to provide a handy resource for determining the number of continuous flashes we can expect at specific power levels:
The flashes were set to 1/128 power, 15 flashes at a rate of 30Hz. This made my shutter speed calculation quite easy – 1/2 second. And if you look closely, you'll notice that the exposure time and framing allowed me to capture every flash burst from the Speedlite in the image (you can count 15 individual balls). With an aperture of f/7.1 and an ISO of 250, I was able to capture a dark background while maintaining a good exposure on the subject, a ping pong ball. Note that I purposefully shot this image at night with the overhead lights turned off to minimize the ambient light in the room (I left a hallway light on and the studio door cracked to provide enough working light). To create the exposures, I set the camera to manual focus noting the plane of focus on the board. I then gently dropped the ping pong ball at the point of focus while triggering the camera's shutter button with my other hand.
So why would someone uses stroboscopic flash instead of simply firing off a continuous burst from the camera with flash set to trigger on every exposure with the intend of combining the exposures in post? One word – speed. For example, an EOS 7D Mark II can achieve a burst rate of 10 frames-per-second, meaning that the camera's burst rate limits the number of individual exposures you can create in a 1-second duration. And if shooting with a Rebel/xxxD series DSLR, the burst rate becomes even more limiting. But using stroboscopic flash, you can essentially capture a subject 40 times within the same 1-second time period (at 1/128 power), translating into a much faster burst rate while simultaneously reducing the amount of post-processing required to achieve the desired result.
If you've never tried stroboscopic flash, we invite you to do so. Creating images using stroboscopic flash is a great way to spend an evening creating fun, creative images. And when you've captured your favorite stroboscopic image (or if you already have one), share it in The-Digital-Picture Flickr group with the tag "stroboscopic flash".
The bears I encountered in Katmai National Park were primarily catching salmon, eating salmon or resting. I thought this bear chillin on a mound of dirt looked humorous.
Leave your caption for this image in the comments.
Friday seemed like a good day for sharing this pic. A larger version of this image is available on Flickr, Google+, Facebook, Instagram and 500px. If reading from a news feed reader, click through to see the framed image.
Note: With a load capacity of only 3lb, this monopod doesn't make much sense for use with most DSLR cameras, in my opinion. However, it should work decently well if used as a collapsible mic boompole instead, though you might need a 3/8"-16 to 1/4"-20 Reducer Bushing for compatibility. :-) [Sean]
Canon's CarePAK PLUS promotion provides protection from kids, pets, and life including accidental damage such as drops, spills, power surges and other unforeseen events. Originally scheduled to end January 9, the promotion has been extended through February 27, 2016.
In addition, any lens included within a kit with an eligible body will be covered. For example, if a customer purchases the Canon EOS 5D Mark III and EF 24-105mm f/4L IS USM Lens kit, the lens will be covered since it is included in the box with the body (also known as a “hard bundle”).
Service Notice: Free exchange for imagePROGRAF PRO-1000
Thank you for using Canon Products.
We have determined that some imagePROGRAF PRO-1000 printers may experience ink leakage. This announcement conveys Canon’s service policy for affected printers. We offer our sincerest apologies to any customers who have been inconvenienced.
In rare instances, ink may leak from inside the printer to the outside of the printer through an opening on the bottom.
imagePROGRAF PRO-1000 units starting with serial number prefix AEGL. Example: AEGL01234 The serial number can be found on the back of printer.
Affected imagePROGRAF PRO-1000 printers can be exchanged for a new printer free of charge when replacements become available around the end of January, 2016.
For details regarding how to exchange your printer, please contact the Canon Customer Support Center at 1-800-423-2366.
The National Press Photographers Association (NPPA) today named Think Tank Photo as the winner of the 2016 J. Winton Lemon Fellowship Award. The honor is given to those who render continuing outstanding service in the interests of press photography and for outstanding technical achievement in photography. Previous winners include Canon, Nikon, Sony, Fuji, and Adobe Systems.
Founded in 2005 by designers Doug Murdoch and Mike Sturm, and Pulitzer Prize winning photojournalist Deanne Fitzmaurice and veteran photojournalist Kurt Rogers, Think Tank is a group of designers and professional photographers focused on studying how photographers work, and developing inventive new carrying solutions to meet their needs. By focusing on “speed” and “accessibility,” it prepares photographers to Be Ready “Before The Moment,” allowing them to document those historic moments that reflect their personal visions and artistic talents.
“When we started Think Tank over 10 years ago, we vowed to serve the needs of NPPA members and other working photographers,” said Doug Murdoch, Think Tank’s CEO and lead designer. “It is an extreme honor to be named for such an illustrious award, especially by an organization we hold in such high regard. We believe photojournalists and other press photographers and videographers serve such a high purpose in helping convey the truth, especially in settings where they often have to put their lives at risk.”
Winton Lemen was a charter member of the NPPA. In 1952, after a distinguished career as a news photographer at the Rocky Mountain News, Pittsburgh Press, and Buffalo Times, he established the photo press markets division of the Eastman Kodak Co. and served as the firm's liaison with news photographers.
You were shooting madly throughout the year and now, during the dark, cold months of winter, you have settled down to process and post your successes.
The problem is that your desk is cold and that your wrist, where so many blood vessels are located, rests directly on that cold desk, radiating the coldness into your hand.
When your hand is cold, your entire body feels cold.
My right hand is cold most of the winter.
For years I have been hunting for a solution and until now, a variety of mouse pads with some insulation capability were the best solution I've come up with, but they fell far short of keeping my mouse hand warm.
On my latest search, I came across a heated mouse pad.
While this is not the first such model I have found, it is the first one that didn't have some restrictive tent-like or glove-like structure over the pad.
It was inexpensive, looked like it would work well for its primary function (a surface for the mouse), had a decent appearance (we're photographers – appearance matters)
and I didn't deliberate very long before ordering one.
For the price, I didn't have very high expectations for build quality, but I was far from disappointed with what I got.
The basic, nondescript, 8 7/8 x 10 1/4" (225 x 260mm) mousepad design features a smooth, 7 3/4 x 9 3/4" (197 x 248mm) matte aluminum surface (great for mouse friction and response)
surrounded by matt black ABS plastic (white is optionally available).
Four non-slip feet hold the pad in place.
Creating heat generally involves electricity or burning something and fortunately the designers chose the former option for this product.
Included is an approximately 5' USB cable that appears designed to plug into and draw power from the computer's USB port.
Upon plugging in the USB cable, my Dell XPS laptop immediately informed me that a device was requesting more power than the port had available.
I rely heavily on my laptop and that message sent a little chill down my spine, but no harm was done.
I unplugged and instead used an
A/C to USB wall outlet adapter.
The next issue was trying to decide which switch position on the provided USB cord was "On".
This determination became easier when I realized that there was a faint blue light emanating around the port when the switch was in the "On" position.
As you would expect with a low-draw power source, the heat isn't instant.
But, the warm-up time isn't bad and the amount of heat provided after warm-up seems ideal for me.
The great news is that my wrist and hand now stay toasty warm on even the coldest days.
Eventually, even the mouse even becomes slightly warmed, at least near its bottom.
With the heated mouse pad on my desk, winter has become a little brighter.
Sometimes it is the little things that make life better and the heated mouse pad may have been the best money I have spent recently.
TOKYO, January 14, 2016—Canon Inc. again ranked first among Japanese companies and third overall for the number of U.S. patents awarded in 2015, according to the latest ranking of preliminary patent results issued by IFI CLAIMS Patent Services on January 13, 2016.
Canon actively promotes the globalization of its business and places great value on obtaining patents overseas, carefully adhering to a patent-filing strategy that pursues patents in essential countries and regions while taking into consideration the business strategies and technology and product trends unique to each location. Among these, the United States, with its many high-tech companies and large market scale, represents a particularly important region in terms of business expansion and technology alliances.
Canon U.S. patent rankings among Japanese companies 2005–2015
No. of patents
*Number in parenthesis represents Canon's ranking among all companies
Canon prizes its corporate DNA of placing a high priority on technology. And with regard to research and development results, the Company actively promotes the acquisition of patent rights in accordance with the management direction of the Canon Group and technology trends while conducting thorough pre-application searches to raise the quality of applications. Through close cooperation between Canon's technology and intellectual property divisions, the Company aims to improve its technological capabilities while further enhancing its intellectual property rights.