Travel Photo Tips: What is ISO, and how does it affect my pictures?

by Dana Murph on

ISO. Three little letters which stand for International Organization for Standardization (not exactly thrilling) and make a monumental difference in the outcome of images, particularly in low-light scenarios. It’s one of the most prominently featured specifications of any modern digital camera, and it’s one single aspect that can make a night-and-day difference in the outcome of your shots. If you’re on the road, on vacation or just galavanting about with your new camera, there are a few key pointers you need to know about how ISO works, and how it can affect the snapshots your take. We’ll spare you the behind-the-scenes, science-y explanation on ISO though and get right to the heart of the matter.

While film and photography purists may balk at the assumption, the average photographer really only needs to know a couple of things about ISO — particularly the novice who simply needs their vacation photos to look at least somewhat like how they remember the scene looking.

FIn general, if a camera has a wide ISO range then it can capture faster moving action in low-light settings. Also, higher ISO ranges enable handheld shots to be taken further into the evening (and without blur). The gallery below highlights every single ISO stop between 200 and 104,200 on a Nikon D3s. Few cameras will offer an ISO range similar to this, but walking through it shot-by-shot gives you a great view of how a boosted ISO alters the outcome of a shot. Pictures are worth a thousand words, as they say. All of the other settings were kept constant for these shots (Shutter Speed: 1/8 of a second; f/5.0; 50mm focal length, no flash fired; auto white balance; tripod-mounted shot). Click the ‘Read More’ link here for a deeper dive into ISO, along with loads of pointers on how and when to tweak the value when shooting.

%Gallery-112103%Most point-and-shoot digital cameras have an ISO range from 200 to 800. A few of the nicer models extend from 200 to 1600, and an elite few at the highest-end extend from 200 to 3200 (Casio’s EX-H20G comes to mind). We’ll focus on the majority here in order to drive home a point. Chances are, the average point-and-shoot that you pick up will top out at ISO 800. If you force this camera to shoot at ISO 800, you will still have trouble shooting handheld images in low-light scenarios. Why? The inverse relationship between ISO and shutter speed.

You see, when shooting in low-light, there are five main things you can rely on to get a decent, visible, usable shot:

  1. A flash. This works almost every single time, but it usually blows out your shot, makes everything in the center a blinding white, and generally makes pictures look “fake.” Consider the use of a flash your last resort, but on a point-and-shoot, it’s likely to be a must.
  2. More light. If you have an indoor family portrait that you’re struggling with, try taking things outdoors. The sunlight vastly improves shots, and you should always seek outdoor light first and foremost before turning to a flash, a heightened ISO setting or a slower shutter. Natural light is king.
  3. Increased ISO setting. In general, the higher the ISO value, the faster your shutter speed can be while still grabbing a usable shot. Conversely, your shutter will need to be slowed as your ISO value is dropped in order to prevent an overly dark photograph. Unfortunately, specks of “noise” and grain are introduced with each heightened ISO value, so it’s never as simple as just “maxing out the ISO,” at least not if you care about image quality.
  4. Slowed shutter speed. If you slow your shutter to 1/8 of a second (as an example), you’ll probably be very impressed with how much light can be captured. Unfortunately, anything slower than 1/60 of a second is nearly impossible for a human to shoot handheld without introducing blur, and that’s for still life. If your subject is moving, you’ll need to shoot at around 1/160 of a second or faster to ensure that nothing is blurred. Of course, if you use a tripod and / or a remote shutter trigger, handling these slowed shutter speeds becomes much more possible, though the setup process is far slower than simply pulling a camera from your pocket, pointing, and shooting. Sadly, most P&S models will not allow you to manually slow the shutter (or adjust the f/stop, for that matter).
  5. Lower (“open”) your aperture. If you have an interchangeable lens camera or DSLR, and you can adjust the f/stop of your lens, tweaking that number lower will allow more light to flood in but will simultaneously give you a shorter depth of field. This means more of the background will blur (introducing an effect known as “bokeh“), but it’s a great way to grab more light. Most P&S cameras will not give you this option.

For example’s sake, let’s say that you’re no fan of your camera’s inbuilt flash. Let’s also say you don’t have a tripod handy. Finally, let’s say that you’re stuck indoors in a low-light situation with no way to increase the amount of ambient light. This scenario is more common than you may expect. This is the exact scenario that most encounter when going out for a family dinner. This also describes most wedding receptions. Sadly, this also describes most hotel rooms that you’ll want to capture on vacation.

Now, with your camera set at ISO 200, you’ll notice one or two things. One, there’s essentially no grain or noise to be found. But unless your shutter speed is extremely slow (approximately 1/60 of a second or slower), your image will be almost completely dark. That’s no good for anyone. For example’s sake, let’s set the shutter to 1/160 — assuming you have a camera that allows you to adjust this setting. In a dark room, with the shutter at 1/160 of a second or so (fast enough to shoot handheld without blur), and ISO at 200, with the flash off, you’ll basically get a black shot. Go ahead and try it. Your results will almost definitely be too dark. Here’s where you realize what kind of magic lies in the ISO value. Keeping all other settings the same, bump that ISO value to 800, or 1600 / 3200 if your camera supports it. Now take the same shot. You’ll notice a much, much brighter imagine, albeit one with some level of grain or noise. In some cases, even “maxing out” the ISO isn’t enough — you’ll simply be forced to slow the shutter and use a tripod or let the flash fire.

But since we’re focusing this article on ISO, let’s talk a bit more about that noise and grain. Basically, you’ll be able to take clearer, more visible shots in low light as you bump the ISO value higher (assuming your shutter speed remains the same!), but the compromise is that you allow more noise and grain into your shots. It’s a tradeoff, so to speak. The inverse is true as well. As you back the ISO value down closer to 100 or 200 (whatever the minimum is for your specific camera), you’ll see darker images, albeit ones that are very sharp. The goal is to strike a balance. Find an ISO setting that introduces a bearable amount of noise, yet still gives your camera the ability to take more visible shots in dim situations.

If you’re able, it’s always preferable to slow the shutter speed in order to take the pressure off of your ISO value. But unless you have a tripod and / or subjects that aren’t moving, that’s not always an option. This very reason is why ISO values on cameras are so important, particularly high ranges. The higher the ISO range on your camera, the better off you are after sunset and indoors. If your DSLR, for example, can reach ISO 6400, you can manage to grab more visible shots than a similar DSLR with an ISO ceiling of just 3200, all other settings being equal. Taking that to an extreme, Nikon’s D3s has a native (non-boosted) ISO range of 200 to 12,800. Needless to say, having an ISO value of 12,800 at your disposal means that you can take very useable images in near-darkness, but of course you’ll have noticeable grain to deal with. But when it really comes down to it, you’d probably rather have a noisy shot of your anniversary dinner than a shot distorted by blur or simply too dark to make out what’s going on.

In case I haven’t convinced you, buying a camera with a wide ISO range is very important. You’ll probably end up taking more low light pictures than you’d expect, and it’s always nice to have a high ISO range to resort to if you simply must get the shot. In general, the higher the price on a camera (be it a point-and-shoot, an interchangeable lens / Micro Four Thirds camera or a DSLR), the higher than ISO range will be.

My overly simple advice here is to buy the camera with the highest ISO range that you can afford; you can never have too high of an ISO value at your disposal. Nikon’s D3s is the current ISO king, but retails for over $5000. Panasonic’s Lumix DMC-GH2 Micro Four Thirds camera just recently started to ship in the U.S., and it has set a new bar for ISO range on a Micro Four Thirds camera. It can reach as high as 12,800 and retails for just $900. Casio’s Exilim EX-H20G has a surprisingly great ISO 3200 setting, and it’s amongst the best out there for low-light shooting in the point-and-shoot arena at $350.

Let’s recap:

  • The higher the ISO, the greater your camera’s ability to shoot in low light (with the shutter speed remaining equal)
  • The higher the ISO, the more noise and grain are introduced into your images
  • The lower the ISO, the more you’ll need to rely on external light sources, a flash or a slowed shutter
  • “Maxing out” your ISO can help you capture a shot you otherwise wouldn’t get, but if it results in too much grain when you preview it, you should consider using a flash, slowing the shutter speed, using a lower f/stop (which decreases the depth of field and blurs more of the background) or seeking more light via lamps or by heading outdoors

Stay tuned for more tips on understanding shutter speed, metering, f/stop, white balance and more!

Dana Murph is a creative photographer based in Raleigh, North Carolina. You can view more of her work at Dana Jo Photos and contact her via Twitter at @danajophotos.

More Roman heritage from Mérida, Spain

by Sean McLachlan on

In the Extremaduran city of Mérida, it feels like at any moment you’re going to turn a corner and meet an ancient Roman. Sometimes that almost happens.

This fellow was at the Museo Nacional de Arte Romano, a world-class museum featuring Roman statues, mosaics, and other artifacts. Built by the famous architect Rafael Moneo Vallés, it looks like an old Roman basilica, with lofty arches, wide corridors, and lots of natural light. This allows each artifact to have plenty of space so it can be viewed from all angles. My five-year-old son loved this place. With the crowds dispersed in such a large area, he didn’t have to keep close to my side all the time. He could wander at will (within my sight, of course) and examine the chariot races on the mosaics all by himself. He also liked the basement, which included a Roman road and several crypts.

While the museum is one of the best I’ve seen, the whole city is actually a museum. Behind a cafe I saw spare chairs stacked under a Roman arch. The local church incorporates parts of a temple to Mars. The main pedestrian bridge across the Rio Guadiana, dating to about 25 BC, is the longest surviving Roman bridge in the world.

Last time I talked about the Roman theater and amphitheater at Mérida. These are the two most popular sights in town, but perhaps more impressive is the Casa del Mitreo. This Roman mansion is located near the subterranean temple of Mithras, a mystery religion that was the main competitor with Christianity for the hearts and minds of the Romans in the late Empire. It’s not clear if the house was actually associated with the temple, but a beautiful, complex mosaic on the library floor suggests it was. It shows the divine principles of sky, earth, and sea in a vast interconnected group. These aren’t gods, but ideas, such as Copiae, the riches of the sea; Aestas, the summer; and Chaos. The whole mansion has been excavated and protected under a modern roof, so you can stroll around on a modern walkway and look down the bedrooms, patios, and wall paintings. My wife voted this the best attraction in town. Near the house is a rather spooky Roman graveyard.

%Gallery-112140% On the edge of town you can see one of the best preserved Roman hippodromes in the world. Chariot races were even more popular than gladiator fights or plays. Like the theater this was an institution that the early Christians disapproved of. But like the Mérida theater, it got a major face lift courtesy of the early Christian emperors in the years 337-340 AD. It took some time for the Christians to enforce their strict morality on the Roman populace. Walking along the 440 meter (481 yard) long racetrack you can easily imagine cheering crowds and crashing chariots. Thirty thousand people could be seated here. Nearby are the remains of one of Mérida’s two aqueducts.

Mérida protected the crossing of the Guadiana river, and so even after the Roman Empire crumbled it was an important spot. The Visigoths, a Germanic tribe, built an imposing city wall and fortress here. Little of that period remains, but the next rulers of Mérida, the Moors, built a sprawling fortress called the Alcazaba next to the bridge. When we visited we had the place pretty much to ourselves. My son got to walk the ramparts and look out over the river, imagining what it would have been like to live in those times. He especially liked exploring the dark tunnels under the main tower, which lead to a cistern that provided the soldiers with water. The upper story of this same tower was once a mosque.

“Fun for the whole family” is a horrible travel writing cliché, but it does apply to Mérida! While the modern town isn’t much to look at, it’s full of ancient surprises. The food and wine are great too. More on that in another post.

Don’t miss the rest of my series on Exploring Extremadura, Spain’s historic southwest

Coming up next: The Visigoths: Spain’s forgotten conquerors!

Five perks at Tokyo’s business hotel for the dead

by Tom Johansmeyer on

There’s a hot new hotel in Tokyo, and everyone’s dying to get in. You have to meet specific criteria to stay at this place … and if you can ask for a reservation, you won’t get one. Simply put, the living aren’t welcome. LISS Center Shin-Kiba calls itself a “business hotel for the dead,” a spot where corpses can wait until funerals are arranged.

So, what makes this hotel so special?

1. Obviously, it’s only for bodies, not the sentient. So, it’s awfully quet.

2. It’s a pretty exclusive spot, too – only 37 “guests” can be accommodated.

3. Bar codes keep everything in order … no need to worry about wandering into the wrong room!

4. You can pay by the hour … well, by the 12-hour block: rates start at 3,675 yen for half a day. For a funeral room, you’ll drop 2,100 yen an hour.

5. You get elbow room while planning to get rid of the body for good. Says Nokai Matsushima of LISS Sytem, “We want the families to have time to think, so they can decide on a satisfactory ceremony while their deceased relatives have a place to rest (temporarily) at our ‘business hotel.'”

[photo by pakrus via Flickr]

Snow and ice strand travelers in their Smoky Mountain cabins

by Kraig Becker on

Dozens of travelers to the Smoky Mountains in Tennessee were left stranded in their rental cabins earlier this week thanks to snow and ice covered roads. Most had a minimal supply of food and were unsure when they could resupply thanks to the treacherous conditions.

Winter storms dumped several inches of snow on the region, but it was the ice that posed the real danger. The narrow and winding mountain roads became impassable thanks to a thick coat of ice which caused many vehicles to slide off the pavement and become stuck in ditches. Without ice chains on their tires, most vehicles were useless on the slick surface, which meant that visitors to the Majestic Mountain Lodges near Gatlinburg were forced to stay in their cabins and wait for assistance.

Some couldn’t wait however. Running low on food, many of people set out on foot for the nearby town, pulling sleds behind them as they went. Once they made the walk into Gatlinburg, they would purchase their needed supplies and then hike back up the mountain to their cabin. That round-trip trek would take several hours to complete.

Slowly the conditions have begun to improve over the past few days, but even salt trucks and plows have had problems getting up the steep mountain roads. For now, most of the visitors have had to stay in their cabins and wait for the ice to clear.

Would this kind of ice storm be a fun winter adventure or leave you with severe cabin fever? It seems that if you were well stocked on food and supplies, it would be fine just relaxing by the fire. But if you were running low on those things, it wouldn’t be much fun at all. I’d hate to be the guy that drew the short straw to make the beer run.


Booking a cruise? Test your cruise travel agent first

by Chris Owen on

Some travel agents are not going to like this idea at all. Those would be the ones that are just in it for the commission. Others, the ones you want, the good ones, won’t have a problem with this and will pass the test with flying colors.

“Finding a good travel agent who will work with you to select the best cruise possible is sometimes as difficult as finding a good doctor, dentist or other service professional.” says cruise travel expert Linda Garrison from About.com.

A big advantage you have with travel agents is that you can test them. Other than seeing diplomas hanging on the wall or Googling a prospective doctor or dentist online, you really can’t test them much before using them.

The test: Fake-book a sample cruise. Pick an easy one using the following variables:

  • 4 to 6 nights
  • Carnival cruise
  • 2 guests, both under 55, residents of New York, not in the military
  • You want to sail sometime during the month of August 2011
  • Least expensive mid-ship Balcony cabin.

Try that online at the Carnival website then at Expedia.com and send it via email to your cruise travel agent or potential agent if you don’t have one. You’ll have to go all the way through the process online, stopping short of providing a credit card, to get the final price. Your good travel agent will take some time to get back to you but it should be reasonable.

Take notes

  • How long did it take to complete the process with the cruise line, Expedia.com and your travel agent?
  • Which source offered you the most options?
  • Which source had the best price?
  • Which source offered a human being that could look beyond the numbers and facts like humans do, offering me the best alternatives?

OK, so the last one was a slightly loaded question but the point is well taken: A good travel agent will be the one that takes a personal interest in you, your plans and can look beyond just the numbers, fees and facts with a focus on not just price but the experience itself.

Save time, skip the test, contact a Travel Agent.

Flickr photo by nicasaurusrex