Digital Camera Glossary

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digital camera glossary

Digital Photography Guide – A Glossary Of Common Digital Photography Terms – Part 1!

For those getting to grips with digital photography, there is a vast amount of literature that can be read on such a wide reaching subject. There are a number of terms used that, while being understood by the experienced photographer, can mean little to the novice. Therefore, I have put together this digital photography guide, which aims to give easy to understand explanations of the most common terms you may come across.

Aperture – This is the hole in the lens that lets light through. Aperture is measured in “f” numbers. The size of the hole is adjustable – the larger the hole, the more light comes through. A small hole carries a high f number, a large hole a low f number. A small hole provides greater depth of field (see below). Using a Digital SLR will enable control over depth of field that a compact camera cannot.

Depth of field – dictates how much of a scene (from front to back) will be in focus. In landscape photography it’s not unusual to keep all of the scene in focus, such as a boat in the foreground, and distant mountains in the background. However, in portraits it’s common to use a shallow depth of field (low f number, wide aperture) to keep the subject in focus and blur the background.

DSLR – Digital Single Lens Reflex. This is the digital equivalent of the traditional film SLR camera. The camera’s design means the photographer looks straight through the lens prior to taking a photograph. The viewfinder’s view is therefore the same as the image recorded by the camera.

Hot Shoe – This is the slot on the top of a camera where a flashgun can be fitted. They are usually found on DSLRs, and are uncommon on compact cameras. It is important to note that each manufacturer have their own design, so a flashgun bought originally for a Nikon, for example, would not be compatible with a Canon.

ISO – is a term originally from film photography, being a measure of how sensitive film was to light. Low ISO (100) was not very sensitive – high ISO (say 1600) was. Photographers would use a whole film of a certain ISO. The advantage of digital is that ISO can be changed for each individual photograph, if necessary. In digital photography the ISO number reflects how sensitive the image sensor is to light. By making the sensor more light sensitive, photos can be shot at higher shutter speeds and in lower light. The disadvantage of this is that high ISO can introduce noise into the image (see below).

Noise – This is the digital equivalent of film grain. It shows up on digital photographs as small coloured speckles, mostly within darker areas of an image. Noise becomes more obvious in blown up photographs. It can be reduced in post production (i.e. Photoshop or equivalent) but, generally speaking, the better quality the camera, the less the influence of noise.

I hope this digital photography guide helps to demystify some of these subjects. Look out for further articles providing explanations of other commonly used digital photography terms.

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Panasonic FZ8?

I’m interested in buying a digital camera with decent zoom, optical image stabilization and so forth that this camera have. I’ve checked DPReview and Steve’s and camera.co.uk, but I’m not much of a techie and don’t understand 95% of the contents after reading the glossary.

YES, the FZ-8 is a great camera for the traveler and hobbyist. It’s very flexible and the 12x zoom is wonderful, and you can tweak a lot of settings if you wish (but don’t have to). Its main weakness relates to sensor noise and relatively low sensitivity but all small-size sensors have this (and if you want a large sensor w 12x zoom well you have to carry gear weighing maybe 4x as much as this camera).
Just remember, it’s not THAT small, so if you want something more pocketable but also w large zoom, you could consider Panasonic’s TZ-3 instead (prices are comparable).

THIS BEING SAID, PLEASE BE AWARE that Panasonic just launched the FZ-18, w 8mp vs. 7mp, but more importantly an 18x (vs. 12x) stabilised zoom, starting at 28mm (vs 36mm) i.e. more useful to shoot buildings, groups at close range, etc. It also has some new features such as face recognition, etc. The 18x zoom can be great if you intend to do sports photography, shoot wildlife, etc. Expected availability, mid-August.

Hope this helps

A

Digital camera tips & photography tips. Digital cameras glossary

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