Operation Information Overload

The pace of change in photography these days is breathtaking, photographers wondering when it will relent. Guess what—it won’t. As competition on all levels and product lines continues to grow, the pressure on manufacturers to innovate will be even greater. Long ago these software and hardware makers realized that as products and ideas become commodities the only way to realize profit was via change, with innovation leading the way. That’s why you can set your clock on when software will move to the next version or when the megapixel and sensor size ping pong match will start all over again. Even with some consolidations and buyouts in the works there still will be new players who see enough gold in the digital hills to keep the momentum going.

There are many ways to stay informed. There are web sites that dedicate 10,000 words to point and shoot cameras, and enough digicam orgs and bloggers out who fill every free hour of the day churning out reports for anyone so inclined to read them. But most people have a life, and reading the arcane and the obvious about every aspect of a camera, software or printer is not what they tend to do.

For most folks photography is a pleasant pastime, a part of holidays or special events that records memories. For travelers it’s a way of bringing back trophy shots of their trips. And for the enthusiast it’s a way to show a creative side, one that helps them escape the everyday and perhaps even put some bread on the table. For most of us, photography is an integral part of the social fabric, one that has been passed onto us by generations before as a valid way to keep close the memories of their families and individual lives.

For the many of the years I have been involved with reporting on all this, photography had been regarded as a “mature” industry, one that could be counted on to continue to grow, not fluctuate much from year to year. This point of view all seems rather naïve now, what with the pace of change the consumer electronics component brought to the mix.

We have been asked to learn many new things, to grasp the meaning of megapixels and how various levels of resolution should be put to use. We have been required to become computer savvy beyond the simple tasks of sending emails and downloading recipes from the web. Terms like optical stabilization and shutter lag, technology so obscure that only pure techies even considered them only a few years ago, are now part of the parlance. In short, we have been engaged in Operation Information Overload, and thrown a few curves in the bargain.

While the benefits of digital are many there are also a few dark sides to all this growth. One example would be upgrades. In the past that might have meant getting a camera with a better lens, or switching over to an SLR. Now it might mean that the memory card that works today might not work in a future camera with the same size memory card slot, a switch in capability without a change in format. Or it could mean buying a new computer and discovering that all the software you already own won’t operate well, or at all, in the new operating system. (Indeed, Adobe just announced they will only be developing future software for Intel-based Macs—the rest can go swim.) Or that the Raw files shot today might not be capable of being read a few years down the road. In some cases the changes are proper responses to new and better ways of doing things. In others, viewed through an admittedly cynical eye, it’s a case of flipping solely for the sake of getting us to dig into our pocket once again.

It’s selling soccer moms cameras with very impressive integral long range zooms so they can catch the action as their daughter streaks in for a goal, only to find that the camera’s intolerable shutter lag makes any hope of actually getting the shot they want slim indeed. It’s telling folks that an 8 megapixel camera can get them great 11x14 prints, only to trump that with 10 and 12 MP cameras a year or two later. It’s offering inkjet printers and even some kiosk setups that produce prints that are known to fade so quickly that future generations will never see the images from the family’s past. Indeed, one of the greatest fears folks seem to have about digital photography is that it is as temporal as their hard drive and as a corruptible as a cheap CD.

Yet, we have all taken to digital in droves, a case of technology replacement that has shocked even futurists who are paid to know better. The advantages of digital are legion and most folks quickly understood the benefits of this new form of photography. Walk through any tourist site these days and all you see are digicams; go to any family occasion and that night you’ll be able to look at, download and even order prints right off the web. There are literally billions of images loaded on servers the world over, with new personal sites and public sharing spaces coming on line every day. Digital has changed photography forever, and there’s no return to the old days, despite some grumbling from some pros and old guard film fans.

So, how do we sort out all the confusing jargon and make it less of a grind? When will we finally arrive at some standards that all can agree to so that we can make some judgments about what’s best for us and the type of images we want to make?

In many cases we will vote with our wallets and certain systems and companies will prevail. And with all the blogs and forums out there, savvy consumers will have their voices heard as well. But for now, Operation Information Overload goes on, and on.

Copyright George Schaub 2009. All Rights Reserved.

Exposure: Film and Digital

Exposure is the change caused by light when it strikes a photosensitive material. It has two factors—time (or duration of exposure) and intensity (the volume of light striking that material.) In both film and digital systems the time of exposure is indicated by the shutter speed, the amount of time that the gate through which light travels after it leaves the lens remains open. The volume of the light that gets through in that time period depends on the size of the diameter of the opening in the lens, known as the aperture number or f-stop. Exposure is like turning on a faucet and letting water flow through a pipe. If we leave the tap open for a longer period of time more water will flow through. If we enlarge the pipe more water can run through in that same period of time.

Exposure is calibrated with a system of stops, or the modern equivalent, EV (exposure value). If the total amount of light doubles or halves there is a change of one stop, or one exposure value. A 1 stop or 1 EV change can be made by halving or doubling the exposure time (shutter speed, for example changing from 1/15 to 1/30 second, or from 1/30 to 1/15 second). It can also be changed by opening or closing the lens diameter by one f-stop (for example, by going from f/11 to f/8 or from f/8 to f/11).

This system allows us to expose with the same amount of light and alter image effects by balancing the changes we make in aperture and shutter speed. If we use a faster shutter speed we can freeze motion; if we use a narrower lens opening we can increase depth of field. As long as we maintain a balance between the two (change the shutter speed in proportion to how we change the aperture—one going up one stop and the other down one stop) we maintain the same overall exposure. This setup is called “equivalent exposure” and is the basis for many creative techniques used in photography.

This exposure system holds true for both film and digital photographic systems, as do the image effects they create. As mentioned, the physics of photography do not change because we have gone from a film to a digital medium.

Digital SLR Photography

Your decision to work with a digital SLR (DSLR) might just change the way you make, process, store and print your images. True, both film and digital photography capture light and require processing steps to see that recording as an image. But digital imaging differs in that it begins as an electronic signal generated by light and ends up as binary code that describes color, brightness and tonality. It is in how you deal with those codes to create an image that makes digital so different.

At first, DSLR cameras can seem familiar. Placed side by side, film and digital cameras often resemble one another; in fact, most DSLRs are built inside the frame of a 35mm SLR body. There are also similar buttons, dials and controls. Terms such as shutter speed, aperture, autofocusing and exposure are all quite familiar to the film photographer. But it is in the behavior of the digital sensor where the two mediums diverge. This is especially true in the image record--the digital image file. It is so unlike the film record that it’s easy to become confused by familiar terms that mask the need for very different operating procedures.


Digital images require considerably more “housekeeping” than film. Both types of image record must be stored properly, be kept safe from damaging influences and must be archived in a way that makes them readily accessible. But you can hold a piece of film up to the light to see the image. Not so with the digital image file. It is “virtual” (mathematical, really) and requires a good deal of computation to be read. It cannot be seen without the aid of a computing device. It requires the intercession of yet more machines and mediums to be maintained, and is always tied to the “grid”—sometimes called the “digital imaging infrastructure.”

This grid is dynamic and can change over time. It can render some cameras and devices obsolete in short order. It can drop image-recording mediums entirely. This pace of change means that there has to be a fairly strong awareness of changes in the computer and imaging industry at large and how some modes of recording and reading systems will change. As you get more involved you’ll see that copying, backup and why an awareness of how recording and playback systems and formats may change over time is important.

The housekeeping extends to archiving, storage and, ultimately, to you taking in hand the actual processing of the image itself. This does not mean you have to do the math or complex programming—the camera’s on-board image processor or your computer handles that. But to get that image onto a print, or corrected or refined to meet your standards, often means your intercession will be necessary. It is this hands-on demand that can make digital so different for many photographers. Granted, this is where your creative process as a photographer comes into play, and where the real potential of this medium resides. But digital is anything but a “you push the button and we do the rest” process.

This is not meant as a cautionary tale to scare you off the digital path. It is presented in the hope that this will become an eyes wide-open endeavor for you.