Photoshop introduction

At the end of our Photoshop introduction today, we were set a quick task to raid Google images and create a collage of what we're doing this weekend to ensure we'd taken everything on board and were comfortable using the selection tools we'd been shown. I present the fruits of my labour...

Click for full size

On Saturday I'm going to Guildford for shopping and excitement! On Sunday, I'll be saving the world and probably phoning my mum. When I'm around, party time is all the time.

See below for notes from today if you're interested in that kind of thing!

Notes from Photoshop introduction —

Terminologies

DPI — Dots Per Inch
Megapixels
PPI — Pixels Per Inch
LPI — Lines Per Inch

Images on-screen all made up of pixels. Computer monitors display at 72 DPI as standard, resolution for printing is 300 DPI.

Spatial resolution: size of image in pixels (width x height).

Standard resolutions

PAL: 720 x 576 (25 fps)
NTSC: 720 x 480 (30 fps)

Nikon D90: 4048 x 3040
A4 scanned image: 2480 x 3508

Much larger images from cameras and scanned material. Need to sensibly resize images to PAL standard in order to maintain maximum quality.

Pixels 

Computers operate with square pixels. Film and video use rectangular pixels.

PAL 4:3 720 x 576 square — 1.09 pixel aspect ratio
PAL 16:9 720 x 576 widescreen — 1.46 pixel aspect ratio.

The resolution is the same but the pixels are rectangular resulting in wider image.

STANDARD WE WORK TO IS PAL WIDESCREEN 1050 x 576 SQUARE PIXEL

Use Photoshop's Film and Video presets — PAL DV/D1 Widescreen Square Pixel

Action safe/title safe borders act as a guide to prevent cropping. Playback on some hardware can lead to cropped image — keep titles to inner border to ensure they won't be cut off.

Firewire external hard drive is recommended due to compatability issues.