Infra-Red Filtration for Digital Cameras So far, in previous posts, I’ve covered the utility of Polarizers, neutral density, and soft effect filters as still quite useful in the digital realm. The last filter type I’ll cover in the Tech Corner (for now) is Infra-Red or IR for short. What We Can and Can’t See The visible spectrum contains all of the light we can, as humans, “see” and includes all of the colors of the rainbow. Outside of our retina’s response capability lies wavelengths both shorter, and longer than we can see. Ultraviolet (UV … [Read more...] about Tech Corner: Infra Red Filtration for Digital Cameras
Latest posts by Steven Inglima (see all)
- Tech Corner: Infra Red Filtration for Digital Cameras - May 14, 2018
- Tech Corner: Soft Effect Lenses and Filters-Still Relevant After All These Years… - February 6, 2018
- Tech Corner: Neutral Density Filters - January 5, 2018
Every lens manufacturer wants their potential customers and users to know how wonderfully sharp their lenses are. Great pains are taken to tweak all aspects of things technical to correct any that need be tamed to make wonderfully crisp images; spherical and color aberrations, coma, astigmatism, etc. So, if we crave the ultra sharp, why wouldn’t we simply want every image to be really “sharp”? To be or not to be--sharp Some subjects are sharpness dependent, for without detail the image is lost. Macro photos of things like insects, big … [Read more...] about Tech Corner: Soft Effect Lenses and Filters-Still Relevant After All These Years…
Neutral Density Filters There are times when there’s just too much light! Sometimes it’s too much for our eyes, and we need sunglasses. Sometimes, it’s too much for our photography or cinematography. For these times, we can employ neutral density filtration, which is like sunglasses for cameras. Filtration normally suggests allowing some things to pass, and some others to be turned away or eliminated. Color filtration does this by allowing one or more colors to pass (the filter being transparent to those frequencies of light) and blocking … [Read more...] about Tech Corner: Neutral Density Filters
It was not that long ago when I, or anyone who photographed commercially, stacked quite a few filters in front of the lens to guarantee control over color and exposure in our photography. Well, we were shooting on…film! There was some remedial balancing with a color negative film-to-print capture, but there was no post-production correction at all for color transparency film. If you were shooting on Kodachrome in a 3400˚ K tungsten light environment, out came the 80A filter to make things right. CC (color correction filters) of every color in … [Read more...] about Tech Corner: Photographic Filters for the Digital Age
No, this isn't about an eclipse of the moon, or sun. Or even about the moon for that matter. Rather, it's about finding a photograph, and a realization that, as the proverb goes, you can't step in the same river twice...because the water has changed. My wife and I were in Albuquerque, in good measure to be wedded in a hot-air balloon during the Balloon Fiesta; mission accomplished! In any given day of the fiesta, we begin really early. Like 3:30am early. Balloons launch at dawn before the heat of the sun creates thermal upheaval, and … [Read more...] about Seeking Moonrise
Needless to say, the total solar eclipse of 2017 across the entire US was just spectacular! The experience of seeing the world go dark in midday, feeling the hot summer air become cool, and collectively feeling the magic; for those who have never had the experience, it is akin to the best music concert you could attend. The resulting photos were also magnificent. Our team consisted of Eddie Tapp and Judy Host, Kevin Ames, Theresa Sicurezza; Lance McAfee and his nephew Sam Meyer; and my then fiancée Debbie Reese whom I've since married and … [Read more...] about 2017 Great American Eclipse Follow Up!
(Editor’s note: Guest contributor Steve Inglima concludes his series of posts about the view camera and how its aesthetic informs digital photography. This article offers ways to add view camera functions to DSLRs. Read part 1, part 2 & part 3.) With an understanding of the benefits of having independent controls over front and rear standard movement, What can we do to bring that utility, capability, set of sensibilities to the digital realm and the size of the silicon sensor used for most digital capture? Miniaturizing the view camera … [Read more...] about The View Camera Aesthetic in the Digital Realm part 4
(Editor's note: Photofocus author Steve Inglima premieres his Tech Corner column by explaining how to choose the right focal length lens to photograph this month's eclipse along with a great set of tips on how to do it. Read Steve's story of his first total eclipse of the sun experience in July of 1991.) Focal length by the numbers I’ve been asked what focal length or lengths would be appropriate for imaging the upcoming eclipse. In part, it depends on the camera and format size. Most of us will be shooting on a digital sensor rather than … [Read more...] about Tech Corner: Photographing the 2017 Total Eclipse
(Editor's note: Soon to be Photofocus author, Steve Inglima presents a post on his experiences photographing the solar eclipse of 1991.) Back in the days when I was the technical manager for GMI Photographic, which marketed among other things Bronica Medium Format and Sea & Sea Underwater cameras, on my way back from a DEMA (diving industry) show in Las Vegas our fight was oversold; and I took a bump to earn a free ticket. My first impulse was to use that ticket to travel with friends and dive at Grand Cayman Island. But then I read … [Read more...] about Tales of my First Complete and Total Eclipse!
(Editor's note: Guest contributor Steve Inglima continues his discussion of the view camera and how its aesthetic informs digital photography. This installment explains the circle of coverage in relations to the shift movement in the view camera and the DSLR equivalent, the tilt / shift lens. Here are links to part 1 and part 2.) Shift & rise movements Shift and rise are the other movement opportunities. Shift is varying the relative position left/right of the lens from the sensitize material, while rise is the up/down movement. Both are … [Read more...] about The View Camera Aesthetic in the Digital Realm part 3
(Editor's note: Steve Inglima continues his thorough explanation of the view camera. The first post in this series introduces the view camera. This installment shows how tilting the lens results in more being in focus than is possible with only a small aperture set on the lens.) The plain truth about focus in a single plane By tilting either stage relative to the other, it is possible to redirect the principal plane of focus to intentionally deviate from what was parallel to the lens, or match another plane of interest. This allows the … [Read more...] about The View Camera Aesthetic in the Digital Realm part 2
(Editor's note: This post and the others in the series are a tour de force of technical photography using a view camera. Guest Contributor Steve Inglima is a life long participant in the photographic industry serving technical and management positions with, most notably, EPOI, Bronica medium format cameras and Canon where he managed the renowned Explorers of Light program. He is qualified with both film and digital cameras. Over the years I have had the privilege of experiencing his wisdom, his love of music and photography. His understanding … [Read more...] about The View Camera Aesthetic in the Digital Realm part 1