Exposure: It’s the Age of Aquarius
Aug25

Exposure: It’s the Age of Aquarius

Photographically we’re in an age of enlightenment. Whether you began your photographic journey with digital, the trip will go smoothly if you have a good understanding of basic exposure. Image files captured with digital cameras have the same sensitivity to light as color slide film. If the exposure doesn’t let enough light reach the sensor, the image or part of it will be too dark. Conversely, too much light reaching the sensor...

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Noise in Digital Images
Jul29

Noise in Digital Images

As cameras get better and better, they are offering higher and higher ISO settings. The Pentax K-1 has a high—not extended—ISO of  204,800. (You can read my review here.) At the same time, newer cameras are getting better and better as coping with digital noise with most not only having cleaner high ISO settings but also in-camera noise reduction, that works well depending on the cause of the noise and the camera used. Like film...

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Tips for Photographing Fireworks
Jul01

Tips for Photographing Fireworks

“We’re going to live on; we’re going to survive. Today we celebrate our Independence day.”—“President Bradford” in the (original) film Independence Day Some photographic subjects, such as fireworks or lightening, can’t easily—at least for me—be captured using any of the standard exposure metering systems but some cameras, including some from Olympus, offer a Fireworks Mode that slows the shutter speed and sets the focusing point to...

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Hysterical Over Histograms
May10

Hysterical Over Histograms

“That which is measured improves. That which is measured and reported improves exponentially”— Karl Pearson A histogram is a graphic representation of the distribution of exposure data in an image file. Mathematicians will tell you its an estimate of the probability distribution of a continuous variable (like image exposure) and was first introduced by Karl Pearson (1857-1936,) an influential English mathematician. An...

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Meat & Potatoes: Exposure
Mar08

Meat & Potatoes: Exposure

In response to several suggestions from new readers of this blog, over the next few weeks we’re going back to the basics with a look at some subjects that challenge new photographers—especially these shooters moving up from cell phones to an SLR or mirrorless camera. When teaching workshops, the number one question I hear from students and one that usually permeates the entire event is a quest for perfect exposure. Back in the 1970’s...

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Your Choice of ISO Affects Exposure Too
Feb12

Your Choice of ISO Affects Exposure Too

ISO (International Standards Organization) speed is a standard method for quantifying film’s—hold on digital’s coming—sensitivity to light. Lower numbers, such as 50 or 100, represent less sensitivity; while higher numbers, such as 800 or 1600, show a film that’s more sensitive to light. ISO numbers are proportional to their sensitivity to light. As you double or halve an ISO number, you double or halve film’s sensitivity...

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Q&A: What Are Lighting Ratios
Feb08

Q&A: What Are Lighting Ratios

I’m always glad to hear from my readers. If you have any questions about what you read on this blog or in what I write about for Shutterbug magazine, please click on the Contact button above and simply ask. Question: In your review of the Multiblitz backpack kit you indicate  some the photographs have a 3 to 1 lighting ratio and have an exposure of 1/125 sec at F/11.  I have a familiarity with lighting ratios but I am weak in...

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