Sources For Images (Capturing & Storing)
Scanner (Capturing/Copying)
Scanners create a digital copy of an object, which is saved to a desktop, laptop or some wireless mobile devices. The object is placed on the scanner surface, and light is bounced off of the object onto a sensor that records the detail (shapes, colours etc.) This can be particularly helpful in creating and storing copies of work that hasn't been created digitally, such photographs developed through convention film-and-darkroom methods.
Digital Cameras and SD Cards
Digital cameras create digital copies of images taken, as opposed to physical copies on a roll of film or instant print. These can have adjustable focus, zoom and capture settings (aperture, light settings, white balances, effects etc) which conventional cameras do not normally have. Most digital cameras use an SD card, a removable memory bank, which can be inserted into desktop PCs and laptops so the image can be moved and stored elsewhere, or into special printers, which print off a copy direct from the card. SD Cards come in different sizes and classes, designed to suit different grades of digital cameras.
Analogue Camera
Usually referred to as "Single Lens Reflex" (SLR) devices, these create an image by projecting light onto a sensitive reel of film, which must later be developed in a dark room to be protected and preserved. These can vary from simple "point-and-shoot" devices, to more complex setups with adjustable zoom and flash guns.
Mobile Phones & Handheld Devices
The ability to capture photographs via mobile phones is a relatively new concept, and the quality of cameras built into mobile devices is ever-improving. These can prove great devices and methods for capturing moments instantly, in a spur-of-the-moment opportunity when setting up a fully functional digital camera is not necessarily possible. The image quality is usually only best suited to small screens, such as those on phones, tablets and some desktop computers, and don't always capture good levels of detail. They can also distort easily if enlarged. Usually, photographs taken on these types of devices are just for sharing via social media.
Digital Formats
Jpeg
Jpeg is a compressed method of saving image files. It is a very lossy method of compression; the degree of this can be adjusted to an extent, allowing a tradeoff between storage size and image quality. File extensions include .jpeg, .jpg, .jpe and .jif.
PSD
This is a Photoshop format, that stores all the information relations to adjustments, layers, colour mode, settings etc, and leaves them in an editable state; i.e. the changes you make are still to the original image and can be undone, rather than to a modified copy of the image, the furthest step back of which is the file you have just opened.
TIFF is similar to PSD, but is compatible with other applications, whereas PSD is (in most cases) a Photoshop-exclusive format.
PSB are files of 2GB or more in size saved from Photoshop.
Formats that save with an 8-bit format store a palette of 256 colours, in addition to the raw image data.
Images For Exhibition
Below are the images I was considering for my exhibition. Those that were selected are marked with an Asterix (*)
*
*
*
*
*
*
*
*
*
*
*
*
These have been taken within the last 3 years, at various visits to and charters at heritage railways and events. With the nature of such events, you don't often get a second chance to get the shot you are after, so each picture is the result of location scouting prior to an visit, previous knowledge of an existing location or careful observation of potential opportunities. With each photograph, permission was obtained where necessary, or care was taken not to trespass or put myself in danger. The last image I was commissioned to take, and it was agreed I could use the photograph in such work as exhibitions and print.
No comments:
Post a Comment