In the previous article I touched upon the 2 main extremes of digital cameras, namely SLRs, and compacts.\u00a0 The former is bulky and expensive, while the latter is small, slim and cheap.<\/p>\n
What is a D-SLR and why would I want one?<\/strong><\/p>\n SLR is an acronym for Single Lens Reflex<\/em>.\u00a0 This represents the mirror and prism system used to show the photographer exactly what will be snapped by the camera sensor when you click<\/em>.\u00a0 What you see is what you will get, in terms of composition.\u00a0 Exposure and colour don’t apply here, though focus and sharpness do – it is physically the actual light that will hit the sensor.\u00a0 This differs from non-SLRs and compact cameras in that the path of light to the camera sensor and the viewfinder are separate and therefore the image you see before taking the shot isn’t a wholly true and accurate representation of what will be.\u00a0 It’s not far off generally, but it’s not the same.<\/p>\n What difference does that make?\u00a0 For many, not a lot.\u00a0 For those that demand complete control over the composition and a say in the optimal focus of the final image, an SLR is a necessity.\u00a0 Many other considerations come into play with the SLR systems including the quality of the lens used to take the photos, additional flash devices and accessories, image quality and post-production options.<\/p>\n By far and away, for me at least, the most significant part of the digital SLR system is the image quality attainable over compact.\u00a0 The sensor technology used in these devices is far superior, while the lenses used in conjunction with them will also be far more optically advanced than the typically plastic lenses found elsewhere.\u00a0 When you want high quality image to either blow-up large, or to meet professional work requirements it is to the D-SLR you will need to look.\u00a0 The downside, of course, is price. Or, it used to be…<\/p>\n The major producers of D-SLRs now have consumer entry-level offerings that are priced in and around the upper price range for compacts.\u00a0 They offer you the opportunity to enjoy a photography experience approaching that of the ‘professionals’ with fantastic image quality, without the need for you to spend too much money, offsetting the risk of a large investment only to realise later that perhaps a compact camera is all you really needed.<\/p>\n Image quality<\/strong><\/p>\n I will touch on this aspect a bit more to illustrate what I mean about the image quality being superior on a D-SLR system when compared with a compact camera.<\/p>\n One <\/em>area that is most easily illustrated is the ‘noise’ present on all digital photographs.\u00a0 In order to emulate the sensitivity grades of traditional film photography, such as ISO 100, 200, 400 etc., digital cameras also provide such steppings.\u00a0 Unlike film, you don’t change the sensor, but just make it more or less sensitive to exposure.\u00a0 This is fine in principle, but it introduces problems at higher sensitivities making some photos unusable in certain cameras due to the digital noise introduced that impacts the final image.\u00a0 The sensor in a D-SLR is generally of a higher quality than compact cameras and this quality varies greatly even within D-SLRs brands.\u00a0 It means that for given ISO sensitivity digital noise is less on D-SLRs.\u00a0 Noise is caused by several factors, such as heat and background “electrical noise” that may interfere with the photosites (pixels) on the sensor and cause erroneous “exposures”.\u00a0 This topic demands a whole post in and of itself but if you desire to understand more, please refer to the links below.<\/p>\n What does noise look like?\u00a0 It causes grainy, rough looking photos, making normally homogeneous subjects appear to made up of noticeable speckles and artifacts that weren’t present when the photo was initially taken.\u00a0 These will be especially noticeable in images taken in poorly lit environments since it is in these compositions that either or both shutter speed is decreased and ISO sensitivity is increased to compensate.\u00a0 Please review the links below for further reading.<\/p>\n After all is said and done<\/strong><\/p>\n When purchasing a digital camera, you will want to go for the best performing device you can justify in view of your budget and your ultimate photography goals.\u00a0 Taking the route of D-SLR will afford you flexibility in lens selections while also giving you a solid base camera that will deliver higher quality photos even under difficult environments such as low-lighting.\u00a0 They are bigger, usually more expensive and demand a greater investment of your time to learn to navigate the controls and bring out the best of what the device can deliver.<\/p>\n Links:<\/strong><\/p>\n