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Posts tagged digital photography
Digital Photography – F Stop Explained
Jul 18th
When you are using a camera, the media you are recording the image to is fixed in the amount of light required to create the image. This is referred to as the ISO, or speed, and is represented by a number such as ISO 400, 200, etc. The exposure to the light is controlled by the shutter speed and the aperture f/stop. This is a simple explanation of the f/stop mechanism.
First one must understand that the shutter speed and f/stop directly affect each other. The slower the shutter speed, the longer the exposure to the light. So, in order to prevent flooding, or overexposure, of the medium, the amount of the light must be reduced. This is done using the aperture, or f/stop, by decreasing the amount of area of the lens that is open to the light. The inverse is also true, if you wanted to take a photo of an athlete in motion but wanted very clear, crisp photos, you could use a very fast shutter speed, and a very wide aperture.
Now you know what it’s used for, here’s what the f/stop numbers mean. The numbers printed on your camera lens can range anywhere from f/1.0 to f/128, but this isn’t all of them, by any means. This number represents the ratio between the focal length of the lens, and the diameter of the aperture opening. For example, a 50mm lens with a 25mm aperture is a f/2 lens, and a 100mm lens with the same 25mm aperture setting is a f/4. Most every lens manufactured today has several f/stop adjustments available to the photographer, but the values printed on the barrels may be a rounded off, for simplicity.
For this example, keep the above in mind. If a person wanted to fill a container with water, but the container had a small hole at the entrance, the flow of the water must be reduced. This will require more time to fill the container, but if the opening is larger, the flow can be increased, thus allowing for faster filling. So, if the shutter speed is slow, i.e. 1/8, the f/stop number must be increased to allow less light in, to prevent overexposure. The opposite is true if the shutter speed is perhaps 1/125th the f/stop number should decrease, to allow more light in. This means that if the bottom number i=on the shutter speed gets bigger, the f/stop number should get smaller.
One last thing that should be mentioned is that the wider the aperture rating on a lens, the more expensive, and bulky they tend to be. there are lenses on the market, both new, and used, with maximum apertures of f/1.2, and as low as f/.95, but the costs of lenses like these can be prohibitive. That coupled with the fact that the f/.95 lens requires the use of a tri-pod, make these almost exclusively professional equipment.
Digital Photography: Overcoming Your Manual Fears
Jul 17th
When buying a new digital camera, most people start out with the best intentions of becoming a truly creative photographer. One look at that thick, complex technical manual, and they switch the camera to auto…and that’s where it stays. As a result, most of us settle for snapshot photography when our cameras are capable of so much more.
Does this sound like you? Don’t worry, you are not alone. Camera manuals reflect the technical power of modern cameras, but they are intimidating to any beginner who just wants to take a decent photo.
Digital cameras are like most computer programs; you may find you can get by with about ten percent of the available functions. So don’t get tied up in knots trying to understand everything. Just learn what you need to know, and learn it well, and you will be well on the way to being a better photographer.
Here are a few tips that may just take the complexity out of photography for you.
Tip #1. Stick with the basics. In the days of film, good photographers used SLR cameras with two main settings; aperture and shutter speed. These were the ingredients of all great photography. Today, cameras come with hundreds of features, but guess which ones you really need to understand? That’s right, aperture and shutter speed.
If you can understand these two settings, you are halfway to becoming a better photographer. Your manual (I never said you could throw it away) will tell you which buttons to press on your camera. However, to really understand what these settings are all about, don’t rely on the manual. There is plenty of information out there; workshops, websites, books and ebooks can help.
Practice has never been easier than it is today. Most cameras have semi-automatic settings, called ‘aperture priority’ and ’shutter priority,’ that allow you to operate one setting while the camera takes care of the other. This is a great way to practice a skill without fear of getting too many failed exposures.
Tip #2. Learn from your mistakes. If you just delete every photo you are not happy with, you are missing a golden opportunity to learn from your own experience. Photos you consider ‘rejects’ actually contain useful information – you really can learn from your mistakes!
Let’s say you are experimenting with aperture. Try photographing a scene three times, with three different aperture settings, for three slightly different results. Instead of keeping your favourite and deleting the others immediately, you could transfer them to your computer and take the time to examine them properly. You can see how each setting changed the look of the picture, and which setting worked best for that subject. Now you can learn from your own results, not from some theory in a book.
Did you know that if you right-click your mouse over a photograph on your computer and select ‘properties’ you will find a lot of information embedded in the file? You don’t have to keep a note of the aperture/shutter speed information; your photo does it for you!
Of course in the long term you don’t want to keep every single photo you take, but you might want to keep a folder of ‘learning photos’ to refer to later, with maybe two versions of each subject you experiment with. To make it even easier, rename the pictures with relevant titles, for example: Wildflowers/Small Aperture, Wildflowers/Wide Aperture; Waterfall/Fast Shutter, Waterfall/Slow Shutter.
Tip #3. Learn The Art As Well As The Technique. Every problem in photography cannot be solved by the camera. Experienced photographers know that good lighting and creative composition is often more important than up-market technology. In fact, most photos fail not because of bad technique, but because they were taken at the wrong time of day, or the photographer did not put enough thought into the composition. Yet daily I meet people who think that all their problems would be solved by a better camera, or some mysterious technique they are yet to learn.
Remember what I said in Tip #1; aperture and shutter speed are the fundamental skills, and with a little practice, they are not hard to learn. Master them and you are halfway there. The key to becoming a really good photographer is a balance of technical knowledge and artistic skill. Practice both, and soon your friends will be coming to you for photography tips!
The Secret of Travel Photography
Jun 17th
One of the most appealing areas of photography is travel photography. When visiting a new place, every photographer wants to find a way to catch its feel, its uniqueness and bring it home with him. Travel photography can a very appealing and rewarding, yet very complex task. Just walking around and getting random shots is not the way to do it. You need to spend some time thinking about what you want to express and how.
When you think of a particular place, all the different elements that cross your mind are melt together to form its unique character or personality, that je-ne-sais-quoi that makes it different from any other place in the world. Whether it’s an old village or an exotic travel destination, a good photographer can capture its uniqueness and present it to the audience. This article is aimed to share some ideas on how to capture the character of a place through photography.
Basic Elements
A location has certain specifics that make it what it is. In most cases, these can be broken down into landscape, culture and people. Let’s take each of them separately to go into more details.
Landscape. Every little town, mountain or city looks different from any other place in the world. The architecture may be exclusive to that specific region or the natural surroundings may be unique. Think of the Gaudi area in Barcelona or the steep cliffs and rough seas of the coasts of Ireland and Scotland. Think of how the place looks like at night or early in the morning. A location takes on different personalities throughout a day and it’s important to capture each of them.
Culture. An important aspect of a destination’s character is its culture. A photographer can capture elements of culture in foods, drinks, local festivals and other things that are specific to that place. Local dishes, an yearly parade with traditional costumes or a street party are good examples.
People. People from different parts of the world look, dress and behave differently. Try to take as many photos as you can, both posed and candid, and catch people in activities the place is known for. If they are famous for being happy and lively you should take photos at parties to express this lifestyle. If they are hard working, photograph them while at work.
Creating the whole picture. To put all these elements together, zoom in on the subject. You can start with the landscape, photographing surroundings, interesting buildings and anything else to help the audience recognize the location. Then you can zoom in to people, capturing their attitudes and lifestyle. Finally you can start exploring culture. Apart from local food and festivals, photograph shop signs that can show the languages spoken there, as well as products that are a tradition for the area.
Travel photography is a very complex job because you need to be good at portrait photography, still life photography, nature photography and still life photography. Learning all these will put you on the right track of becoming a good photographer. More >
Things You Need to Know Before You Buy Digital Camera
Jan 31st
Digital cameras come in many sizes, colors, brands, zooms, resolutions, playbacks, etc. There are so many features and qualities that are being placed in the devices that buyers especially first timers become overwhelmed and dizzy with these outstanding arrays of gadgets. This is even without including the various advertisements and different ratings that are used to promote these products.
So what are the things to look for if you want to buy digital camera? To be able to answer these, there are 2 sets of information you have to know before you can decide. The first type of information is defining what YOU need and want in a digital camera. To do this, you can ask yourself the following questions:
- What do you want to take with your digital camera? Before you buy digital camera, it is important to determine what kind of pictures you want to take with it. If you are a digital photography enthusiast, any digital camera will not just do. You have to look for features that can support the zooming you need, the resolution, etc.
- How much is your budget? This is a very important question any person who intends to buy digital camera should ask. Because no matter what your needs and wants are for the device, your financial resource will play a huge part in dictating the type of digital camera you will buy.
- What are you resources? When you buy digital camera, sometimes the spending does not end there. You also have to consider the capacity and the power of the computer and the printer you will be hooking your camera with for your editing and printing needs. Editing software are already included when you buy digital camera but other devices aren’t. Aside from a printer, ink and paper for printing, you might also need additional memory cards for your camera and a more powerful computer to support image editing and image storage and retrieval.
After answering these 3 questions, the second set of information you need to know before you buy digital camera are the features that you need in the device. These are:
- Resolution. Before you buy digital camera, check first its capacity to produce high quality photo images. The number of pixels indicated determines resolution. The more number of pixels, the higher the resolution which can make photos to be enlarged without losing image quality.
- Built-in memory. Digital cameras need memory cards for picture storage. When you buy digital camera, make sure that the gadget that you buy does not only have a “built-in” memory but should also have a card slot for external and additional memory. This allows you to change full memory cards conveniently while shooting your pictures.
- Look and feel. It is essential for you to feel comfortable holding your digital camera while shooting. So, before you buy digital camera, it good to test and check if you are comfortable holding it and using it. Consider where the buttons are located and how they are spaced out and see also if you feel comfortable using the viewfinder.
- Battery life. Digital cameras use up batteries fast and batteries are expensive. Before you buy digital camera, consider if the camera’s batteries are rechargeable. This way you can recharge them. Take also into consideration an AC adapter when you buy digital camera. You can attach this to the camera when you are viewing your pictures or uploading them
- LCD. The LCD is a special consideration you have to look into when you buy a digital camera. This is a small screen located at the back of a digital camera that allows you to preview the pictures you took. This has to be considered when you buy digital camera because it uses up a lot of battery power.
- Special features. Special features that will suit your needs should be thought about, too before you buy digital camera. If you want your camera to have good zooming, you can opt for those with optical zoom lenses. A diopter adjustment on the digital camera’s viewfinder will also be beneficial to those who regularly wear glasses and wish to buy digital camera. Other features such as remote control, tripods, etc. can also be considered when you buy a digital camera.
With these information, you can now figure out what you really need and want before you buy digital camera. If you want to see ratings and rankings of these devices based on price, resolution or other features, check out various websites that have these in the Internet.