- What Lens Should I Obtain For My Digital SLR Camera?
- Topaz Lens Effects Summer Sale
- Life of a Traveling Landscape Photographer
- Rare Photos of China’s Manned Space Program
Posted: 26 Jul 2013 04:21 PM PDT
One of the most important advantages of DSLR cameras (i.e. semi-professional and professional) is the ability to use different lenses. However deciding on what lens to buy and what lens is suitable for a specific type of photography is a bit difficult. In this article we learn about advantages and main purpose of using specific types of lenses, hoping that we make it easier for you to decide. Let’s have a look at different types of lenses and learn when they are used.
Prime Lenses and Zoom Lenses: A lens with a fixed focal length is being called a prime lens. This is opposite to zoom lenses which have varying focal length. As the focal length is fixed, in order to compose a photo you will need to adjust your distance to the scene to have specific objects or people in the photo. In zoom lenses, you will use the zoom level to compose the photo instead of changing the distance of camera to the scene.
Prime lenses have a more simple build than zoom lenses and they can be designed to have very much better performance, sharpness and quality than zoom lenses. Zoom lenses normally show different types of errors in different focal lengths while prime lenses have the least amount of such errors. Prime lenses are very compact and much smaller than zoom lenses. Their price is also cheaper than zoom lenses in an equal aperture size. You can buy a 50mm f/1.8 lens for a Canon or Nikon camera for around $100 while a zoom lens with the same aperture size might cost above $1000.
Normal Prime Lens: A prime lens (i.e. with a fixed focal point) with a focal length of 50mm is called a normal lens. Photos taken with a 50mm lens seem similar to what our eyes see at the scene (perspective, angles etc). Canon, Nikon and some other DSLR brands, as mentioned in previous section, sell normal lenses with f/1.8 aperture size or better (like f/1.4) with a cheap price. An f/1.8 normal lens is suitable for relatively low light conditions and produces sharp and bright photos.
Short Zoom Lenses: Zoom lenses which cover the range of up to 50-60mm can be considered in this category. Examples of these lenses are 35-70mm f/3.4-4.5 and 28-70mm f/3.5-4.5 lenses. Nowadays some Canon and Nikon models are offered with a cheap 18-55mm f/3.5-4.5 lens. These lenses can be considered short zoom lenses while they also cover wide and super wide range.
Super zoom Lenses: These are the types which cover a super big range. Super zoom lenses like a 18-200mm lens cover wide-angle as well as tele-focal lengths.
However the most important feature of these lenses is their convenience of avoiding lens change. These lenses can offer almost every focal length you need and therefore they are sometimes being called as “walk around lenses”. If convenience is not a matter for you, we recommend you to use more than one lens which have a better performance in a smaller focal length range.
Aperture Size: Bigger aperture sizes (i.e. smaller f number) like f/1.4, f/1.8 and f/2 provide more light to the camera sensor and therefore are faster lenses (photo can be taken in a faster shutter time). However zoom lenses with bigger aperture size might be unbelievably expensive. F number is calculated by dividing the focal length to the aperture diameter. As an example if the aperture size (i.e. diaphragm window) of 50mm lens is set to 6.25mm the f number will be 50mm/6.25mm=8 meaning that with this aperture size, lens has been set to f/8.
Wide-angle and Ultra Wide-Angle Lenses: Lenses with a focal length of 21mm to 35mm are normally called wide-angle lenses. Lenses with a focal length of less than 21mm are called ultra wide-angle lenses. These lenses can be either prime lenses or varying focal length ones (zoom lenses). Wide-angle prime lenses have better aperture sizes (in the range of f/1.4 to f2.8) than wide-angle zoom lenses (aperture sizes of f/3.5-f/4.5 most of the time). Again the zoom types provide flexibility while prime lenses provide sharper photos, cheaper price and bigger aperture size (i.e. better photos in low light conditions). There are also zoom lenses which just cover wide and super wide ranges. These include 21-35mm, 18-28mm lenses.
The large coverage angle is also one of the benefits of wide and super wide lenses. An ultra wide lens can sometimes capture up to a 90 degrees angle or even more.
Wide and ultra wide lenses normally have perspective distortion. This kind of distortion causes the nearby images to be photographed very much bigger than far away objects. These lenses are suitable for taking photos inside buildings, street photography and so on.
If you mostly shoot inside buildings, a lens covering focal lengths of 28mm or below will be suitable. This kind of lens allows you to capture a considerable angle of a scene without the need to have a big distance with the subject(s). However, if you shoot portraits and nature a longer range lens will be more useful. In these cases a 35-135mm lens is very good.
Long telephoto Lenses: Lenses with a focal length of 135mm or above are normally considered as long telephoto lenses. Tele lenses which have varying focal length are called telephoto zoom lenses while those with a fixed focal length are simply called telephoto lenses. You can easily find 55-200mm, 55-250mm, 70-300mm, and similar telephoto zoom lenses for most of the DSLR brands. However because of the big range of the lens and complicated design, different focal lengths of the lenses might show different errors and quality. These lenses normally have a lower performance than short zoom lenses and fixed focal length telephoto lenses. A 200mm telephoto prime lens is an example of non-zoom telephoto lenses.
Medium Telephoto Lenses: Lenses with focal length of the range 85-135mm are sometimes referred as portrait lenses. This is because their perspective distortion is low and a suitable distance between the subject person and camera can be maintained. Many telephoto zoom lenses can be used in this range, but they are heavier, bigger and their maximum aperture size is smaller than prime lenses. However if you shoot a lot of portraits, you would rather use medium prime telephoto lenses like with a focal length of between 85mm and 105mm maximum aperture size of f/2.
Prime medium telephoto lenses have less perspective error and as mentioned earlier their image quality is sharper and brighter and bigger aperture size prime lenses are cheaper than zoom lenses with the same maximum aperture size.
Macro Lenses: Macro lenses are designed to provide very high level of magnification and also very short focusing distances. In normal zoom lenses minimum focus distance (i.e. the distance between lens and the object) is normally larger than 30 cm. This distance is a few centimetres for macro lenses so you can take photos from a shorter distance and have a sharp and very detailed photo of a very small object (like a small flower or a bee).
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For an alternative to expensive lenses, you may want to consider Topaz Lens Effects while it is half off this month. Details here: Topaz Lens Effects Summer Sale
Go to full article: What Lens Should I Obtain For My Digital SLR Camera?
Posted: 26 Jul 2013 03:40 PM PDT
Lens Effects from Topaz brings all camera lenses and filters together in a powerful and easy-to-use plug-in, minimizing the need for additional and expensive equipment, while providing flexibility from editing. To receive 50% off until the end of the month, simply remember to use the voucher code JULYLENS at checkout. It can be found here: Topaz Lens Effects
The effects made possible by virtual simulation of common lenses, filters and specialty cameras make it easy to change or emphasize focal points, adjust depth-of-field, add vignettes, balance color tone, create miniature scenes and more.
Lens Effects Highlights:
Traditionally, most lens and filter effects are interposed at the time of the shot. However, Lens Effects extends the functionality beyond the camera, providing the convenience and flexibility to add any number of filter, lens, hood and specialty-camera adjustments after the shot. This type of control helps simplify the shooting process by simulating the abilities of your camera equipment inside of Photoshop. Lens Effects offers a way to explore the many benefits that traditional lenses and filters offer – in just a click.
How to Get a Discounted Copy Until Month-End:
For those interested, you can receive half off until July 31 by using the discount code JULYLENS at checkout. After installation, the plugin will be added to the filters menu within your Photoshop.
More details here: Topaz Lens Effects – Professional Creative Filters
Posted: 26 Jul 2013 01:52 PM PDT
Many aspiring landscape photographers dream for the chance to travel the world and take photos for a living. Lars Schneider was one of those photographers, and now he’s living the dream. But it’s not all rainbows and butterflies. Besides the challenges of capturing amazing landscape images across the nation, he’s traveling with his wife and 8-month old son. Even more, he’s doing this all in a 42-year-old VW bus (for those of you reading this by email, the video can be seen here):
Things to Keep In Mind Should You Start a Photography Trek of Your Own:
Posted: 26 Jul 2013 11:42 AM PDT
Space exploration isn’t limited to just a couple rival countries anymore. China has developed a successful manned space program over the past decade or so, as demonstrated in this album of the Shenzhou-10 mission, featured on imgur. The photos offer a rare glimpse inside the country’s ambitious program, which, earlier this month, completed a 15-day orbit (its longest mission yet) and docked with the Tiangong-1 Space Laboratory, the first module in a planned permanent space station. The photography below captures a range of cultural touchpoints: rumbling takeoffs, expansive command centers, floating astronauts, excited children waving paper airplanes, and most importantly, a triumphant return (for those of you reading this by email, the album can be seen here):
Other potential plans include manned lunar missions and possibly even a manned mission to Mars.
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