Black and white with bitmaps

Bitmap is an image format that shows only two things: colour, and the absence of colour. This is expressed in your imagery with black-and-white. When you convert an image to a bitmap, Photoshop examines the image, and then converts each pixel to either black or white. The final result, and how the outcome is determined, is based upon which conversion method you choose, and how you set up the options. There are numerous methods and the outcomes can vary considerably, but you're probably asking yourself: what use is a bitmap image anyway?

Well, in its own right, it's simply a black-and-white representation of your photograph. Granted, there may be a nifty conversion effect present, but it's still just black-and-white. However, when you use your bitmaps as the raw materials to create custom selections, things get much more interesting. Alpha channels understand black-and-white all too well. It is the black-and-white data within an alpha channel that dictates how that particular channel will translate into a selection.

Thank you for reading 5 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

The Creative Bloq team is made up of a group of design fans, and has changed and evolved since Creative Bloq began back in 2012. The current website team consists of eight full-time members of staff: Editor Georgia Coggan, Deputy Editor Rosie Hilder, Ecommerce Editor Beren Neale, Senior News Editor Daniel Piper, Editor, Digital Art and 3D Ian Dean, Tech Reviews Editor Erlingur Einarsson and Ecommerce Writer Beth Nicholls and Staff Writer Natalie Fear, as well as a roster of freelancers from around the world. The 3D World and ImagineFX magazine teams also pitch in, ensuring that content from 3D World and ImagineFX is represented on Creative Bloq.