Digital Cameras
Posted by iwellbc on March 10th, 2010 filed in ArticlesComments Off
Today people are switching over from film cameras to digital models. The obvious reasons are the ease with which objects are framed and shot, pictures are stored, recorded, and displayed. To top it all you can download at the comfort of your home and print the pictures.
However if you are buying one for the first time, there are chances that you will be literally lost reviewing the specifications and features offered by the numerous brands out there in the market. Do you go by mega pixels or do you go by manufacturers or by price range or by….well, there are many more classifications possible. The following guide is prepared with the intention to help you arrive at a practical model of your choice.
Various Features
Weight
This factor depends a lot on the usage of the digital camera. You want one to carry around in your pocket or purse, go for the light weight ones. No doubt they are convenient, but the have tiny buttons, controls and dials which may make the handling a little difficult. The bigger ones weigh more and have more features too.
Resolution
Cameras are categorized as mega pixels of resolution. It narrows down the range of cameras and helps you sort out beginners, intermediate and advanced groupings from these. The range is 0.1 mega pixel to 18 mega pixel and some even more. The key to choosing the right pixel camera depends on how close you wish to get to target.
2 mega pixels and less- you get reasonably sharp images and enough details for prints of 8×10s and smaller. Prints are not of very high quality but suitable enough to be posted on emails and web sites. These cameras are inexpensive.
2 to 6 mega pixels- As the resolution keeps increasing in this range, the picture quality keeps getting better. You get sharper images all at an escalated price.Eg Canon PowerShot S3, Fuji FinePix V10 etc.
http://www.reviewgist.com/digital-camera-reviews?resolution=0.1-to-5.1
6 mega pixels and more- More aren’t always good. Keep in mind higher mega pixels mean larger image sizes, expensive memory cards, and take more space of your computer’s hard drive.Eg. Canon PowerShot Pro1, Canon PowerShot S80 etc.
http://www.reviewgist.com/digital-camera-reviews?resolution=6.37-to-8.32
Zoom
Optical zoom lens- Image gets magnified by lens-3x, 4x, 10x and more, however keep in mind that very long zooms are prone to camera shake. Use a tripod to cover up for this problem. A 3x optical zoom means it can make a subject appear thrice as close. An optical zoom produces the best quality images. You can’t get too close to the object, but then a photo editing software can help you crop the image. It gives better result than using the digital zoom.
Digital zoom is a simulated optical zoom; it enlarges only the central portion of the image. The lens is not used in this case. The digital zooming effect is given by software inside. The result is most often a blurry and digitized picture. You can use both zooming effects in cameras that offer both these features.
Lens
A lousy lens can spoil all that extra resolution and image processing controls. So, before you buy one assess the final image on a computer based on these criteria:
check the lens for overall focus and sharpness, whether corners are as sharp as in the middle
check for flaring, i.e. colored circles and reflections when shooting towards light source
check if the lens offer attachments, you can add wide angle or telephoto attachments to extend the focal length range
whether manual or electronic zoom control, manual zoom offers more speed and flexibility
Memory
Unlike the film cameras the digital cameras store images in memory. Thus each time the memory is full, you can download them and the camera is ready to shoot again. Memory is of two main types: built-in and removable. Most low end cameras have the built-in memory. Removable memory cards have the advantage of upgrading the memory, particularly useful when you are taking lot of pictures in one trip.
Flash Types
It all started with photographers igniting a tray filled with gunpowder to illuminate a scene. Today digital cameras come with built in automatic flash unit combined with a sophisticated light measuring and exposure control system. They are so convenient and easy to use that we often fail to notice it.
Digital cameras are specified by a guide number which basically gives the flash power. Higher the guide number, greater the flash’s useful range. With changes in sensor speed and /or lens focal length, the guide number changes. So manufacturers instead specify the flash’s maximum range with the assumption that flashes is fully charged and the lens aperture is wide open.
Some of the common modes:
Auto mode is well known! Cameras with red eye reduction mode first fires a short burst to close the subject’s irises then the main flash and finally the picture is taken.
Fill flash modes to fill in shadows.
Flash off mode to capture the object in natural light.
Night scene mode exposes the foreground subject without underexposure of background. For maximum flash flexibility select a camera with an external hot shoe.
Some models come with just the external flash units.
Some varieties have both external and built-in flash units.
Some very compact digital Camera models come with no flash units.
Focus Type
Most digital cameras have a combination of different focus modes. In the automatic mode, when you press the shutter-release button half-way down, the focus is locked. It is also confirmed by a change of color of the focus indicator.
The Auto focus is achieved in different modes. The most common of them is the single area focus mode. The focus is on the central area of the image you find on the screen. In the spot focus mode, the focus is precisely on the center area of the screen. For shooting slow moving objects you can use the continuous auto focus mode. Be aware of the huge consumption of power in this mode.
Manual focus- This feature allows you to manually focus on the portion of a scene which may or may not be at the center of the screen. Select the area to be focused by using one of the several focus area indicators by toggling a cursor button to achieve close ups and macro shots. Some models have the focus rings for manual focus, turn it till the subject is in focus.
Fixed focus- This feature can be used to your advantage when there is pre-determined distance between the camera and the object.
The various combinations of the focus types are:
Auto focus and manual focus
Auto focus and fixed focus
Auto, manual and fixed focus
Camera Type
Standard Point and Shoot cameras- Point and shoot models are available with basic features to the ones with advanced controls and options and excellent macro capabilities. The flexibility with which these cameras can be used like in situations where it is hard to frame the subject or shooting at waist levels makes these models much sought after. It is a silent performer ideal for shooting in locations where a loud shutter clack is not appropriate.
SLR/Professional- More interesting features like interchangeable lenses, flashes, sophisticated controls and other accessories, these models are specifically designed for photographers and professionals. Eg. Nikon D40, Nikon D40x etc.
http://www.reviewgist.com/digital-camera-reviews?cameraType=SLR%2FProfessional
Compact- The features are moderate, yet small enough in size to slip it in to your pocket before you go for the party. These models are comparatively higher priced than the similarly featured standard sized cameras. Eg. Canon PowerShot SD800, Kodak EasyShare V550 etc.
http://www.reviewgist.com/digital-camera-reviews?cameraType=Compact
Ultra compact- With technology improving at a fast rate the size of the cameras is getting smaller and smaller. Cameras of the size of credit cards, slightly thicker shoot amazing pictures. No compromise on features like LCD screens (as small as 2 inch), optical viewfinder, good resolution (some with even 7 mega pixels), and good battery life too. Eg. Casio Exilim EX-S500, Samsung NV3 etc.
http://www.reviewgist.com/digital-camera-reviews?cameraType=Ultra-Compact
Battery
There are two types: rechargeable ones and disposable ones. Since digital cameras consume power very fast, especially if you are using a LCD, it is best to invest in the rechargeable ones. Some digital cameras come with AC adapters, if yours doesn’t have one, purchase one separately.
Some batteries are:
NiMH batteries are the most sought after ones today. They are rechargeable, last long, and come in various compact designs and no memory problems.
Alkaline ones are not rechargeable and don’t last long.
Lithium ion batteries are small and recharge quickly.
NiCad batteries if not charged properly can have loss of memory.
AC adapters enable you to keep shooting long after your batteries are dead!
Price
Luckily you don’t have to spend huge amounts to own one.
Low range
Even a couple of hundred bucks can fetch you a very good camera with video capabilities and nice zoom. And they are not the sub-par models of yester years. Eg. Nikon COOLPIX S5,Canon PowerShot G7 etc.
http://www.reviewgist.com/digital-camera-reviews?Price=0.01-to-237.49
Mid-range
A lot more features get added, more of mega pixels, and more powerful lenses are available in this range of cameras. Eg. Nikon D80, Nikon D200 etc.
http://www.reviewgist.com/digital-camera-reviews?Price=237.49-to-599.84
High range
These ranges of cameras are mostly for professionals with superb image rendering capacity and produce excellent photos. Eg. Nikon D2Xs, Canon EOS-1D Mark III Body Only etc.
http://www.reviewgist.com/digital-camera-reviews?Price=1437.12-to-7999.99
Digital Landscape Photography: In the Footsteps of Ansel Adams and the Masters
Posted by iwellbc on March 9th, 2010 filed in Articles5 Comments »
- ISBN13: 9780240812434
- Condition: NEW
- Notes: Brand New from Publisher. No Remainder Mark.
Product Description
Ansel Adams (1902-1984) was a pioneer of landscape photography, whose imagery-especially his iconic views of the American National Parks–is widely published and instantly recognizable. While he is undoubtedly one of the best-loved and best-known visionaries of American art, photographers also recognize him as a pioneer of technique, a theoretician, and as one of the great teachers of the craft of photography.
His zone system has been widely adapted, but Ada… More >>
Digital Landscape Photography: In the Footsteps of Ansel Adams and the Masters
6 Important Features to Consider While Selecting the Best Digital Camera!
Posted by iwellbc on March 9th, 2010 filed in ArticlesComments Off
There are various types of digital cameras made by different manufacturers with different features. Among all, selecting the right digital camera which is suitable for you is not a typical task if you follow these techniques.
1. Resolution
2. Optical zoom
3. Digital zoom
4. memory
5. Usability
6. Investigate
These techniques are explained as follows:
Resolution
Each and every digital camera has certain resolution factor. Most advanced cameras will have high resolution where as the normal digital cameras will have low resolution.
Basically the picture resolution will be dependent on pixel rating. The resolution of the camera will vary for different cameras with different pixel count.
The cameras which have high resolution power produce larger images and the rate of these cameras will also be high. Normal and average photographer need not require these cameras with high resolution.
Most probably these high resolution cameras are preferred by professional or expert photographers. They also don’t use these cameras all the times (except for taking special pictures).
Optical zoom
Optical zoom is necessary to view the object in large size. Almost all digital cameras will have this optical zoom facility. Before buying the camera, you must check the optical zoom present in it and you must not afford it if it has the optical zoom less than 2.
Digital zoom
Digital zoom is used to increase the size of the picture. Most of the digital cameras offer this digital zoom facility. Check out the clarity levels of the picture clearly when you increase the size of it because some of the pictures will loose their clarity if you apply digital zoom to them.
Memory
Before getting the new digital camera know how much memory is present in it. Most of the digital cameras will have less memory to store more number of snaps in it. So, better along with your digital camera get the extra memory card which has enough space to store more snaps in it.
Usability
You have to select the camera depending on your usability. If you have high usage of it, go for advanced cameras which provide more techniques and high resolution or else if you have less usage of it better get the digital cameras which don’t have high resolution and more advanced techniques. So, depending upon the usage you have to select the right camera suitable for you.
Investigate
After getting your new digital camera, investigate it on various aspects by knowing what are the different modes and new techniques present in it. Try to learn all the techniques regarding how to handle it properly without causing any damage to it before using your new digital camera for the first time.
Do you like to know the reason behind this? Some cameras will be damaged easily if you don’t handle them in the right way. So, to avoid this situation try to know how to handle it in the right way.
Other than these things, you should also get all the necessary accessories required for your camera when you get the new digital camera. These accessories will be helpful to you in more number of ways and they also prevent the damage of your digital camera. Visit Digital Picture Zone
David Busch’s Nikon D90 Guide to Digital SLR Photography
Posted by iwellbc on March 9th, 2010 filed in Articles5 Comments »
- ISBN13: 9781598639056
- Condition: NEW
- Notes: Brand New from Publisher. No Remainder Mark.
Product Description
Welcome to the D90, Nikon’s newest full-featured—yet compact and affordable—digital SLR camera. David Busch’s Nikon D90 Guide to Digital SLR Photography shows you how to maximize your camera’s robust feature set, blazing fast automatic focus, the real-time preview system Live View, HDTV movie-making capabilities, and the Retouch mode that allows you to edit your picture in the camera, to take outstanding photos. You’ll learn how, when, and, most importan… More >>
David Busch’s Nikon D90 Guide to Digital SLR Photography
Digital Cameras – the Constant Innovation and What to Look for When Buying
Posted by iwellbc on March 9th, 2010 filed in ArticlesComments Off
Main Concept And Evolution
When digital cameras became common, a question many photographers asked was whether their film cameras could be converted to digital. The first recorded attempt at building a digital camera was by Steven Sasson, an engineer at Eastman Kodak. The first true digital camera that recorded images as a computerized file was likely the Fuji DS-1P of 1988, which recorded to a 16 MB internal memory card that used a battery to keep the data in memory.
Digital cameras can include features that are not found in film cameras, such as:
- Displaying an image on the camera’s screen immediately after it is recorded.
- The capacity to take thousands of images on a single small memory device.
- The ability to record video with sound.
- The ability to edit images and deletion of images allowing re-use of the storage they occupied.
A digital camera is a camera that takes video or still photographs, or both, digitally by recording images on a light-sensitive sensor. Most digital cameras measure subject distance automatically using acoustic or electronic techniques, but it is not customary to say that they have a rangefinder. The resolution of a digital camera is often limited by the camera sensor (typically a CCD or CMOS sensor chip) that turns light into discrete signals, replacing the job of film in traditional photography.
Digital cameras have high power requirements, and over time have become increasingly smaller in size, which has resulted in an ongoing need to develop a battery small enough to fit in the camera and yet able to power it for a reasonable length of time. Digital cameras are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles and even webcams. Webcams are digital cameras attached to computers, used for video conferencing or other purposes.
When You Buy Digital Camera
Measuring the “pixels per dollar” as a basic measure of value for a digital camera, there has been a continuous and steady increase in the number of pixels each dollar buys in a new camera consistent with the principles of Moore’s Law. Before you buy digital camera, it is important to determine what kind of pictures you want to take with it. Be sure to check first its capacity to produce high quality photo images and don’t forget about camera’s batteries – make sure they are rechargeable.
When you buy digital camera, sometimes the spending does not end there. For instance you may want to buy additional memory if the one that is already included doesn’t suit your need and its capacity is not enough for you. This is why you must make sure that the gadget that you buy has not only a “built-in” memory or a card slot for external and additional memory, but also includes memory card with good enough capacity.
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.
It is essential for you to feel comfortable holding your digital camera while shooting. So, before you buy digital camera, the right thing will be to test and check if you are comfortable holding it and using it. Special features that will suit your needs should be thought about, too before you buy digital camera. 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. When buying digital camera in online store, make sure you already know what you want and start sorting by lowest price first and later calculating shipping and sales tax.
With these information, you can now figure out what you really need and want before you buy digital camera.