The CBRE Urban Photographer of the Year competition – now in its ninth year – encourages professional and amateur photographers to capture cities at work. Here: Dog Walker – 15:00. The competition allows photographers to enter up to 24 images, one representing each hour of the day. (Photo by Johanna Siegmann)

“If a man insisted always on being serious, and never allowed himself a bit of fun and relaxation, he would go mad or become unstable without knowing it”. – Herodotus. “You can discover more about a person in an hour of play than in a year of conversation”. – Plato. Photo: Mandalay, Burma. (Photo by Steve McCurry)

(L-R) Maria Silva, Milena Cortes, Maria Arteaga, Jackeline Bastidas and Gissy Abello pose for a picture at the Famproa dogs shelter where they work, in Los Teques, Venezuela, August 25, 2016. Venezuelans struggling to feed their families let alone their pets are dumping animals on the streets, in parks and at makeshift homes overrun with scrawny animals amid an economic crisis. An hour from Caracas in Los Teques, hundreds of dogs bark and run around the streets scavenging for food outside a makeshift shelter. (Photo by Carlos Garcia Rawlins/Reuters)

A truck lays overturned onto a car following strong winds at a Kurnell industrial park after a rare tornado hit the Sydney suburb December 16, 2015. The tornado hit Sydney on Wednesday with destructive winds above 200 km an hour (125 mph) and cricket ball-sized hail, bringing down trees and power lines, tearing off roofs, overturning vehicles and causing flash flooding. (Photo by Jason Reed/Reuters)

For more than three years, Ukraine has been plagued by a conflict between the eastern secessionist territories and the Kiev government. Demonstrations by pro-Russian parties that oppose the current government first began in 2014 - and now, over 10,000 people have died, many of them civilians. These images portray a generation caught between war and peace. Many of them were born into the civil conflict dominating the country and are disorientated about their place in the world. Here: Youths during a party organised on a decommissioned bridge in Kiev. (Photo by Aude Osnowycz/The Guardian)

French retoucher Christophe Huet is a true photoshop Master! His work is fascinating. He is the one who creates the famous advertising for Playstation, but also some for Nike, Motorola, Surfrider Foundation…. I spend an hour on his site looking all of his work, and the Best of all is that he has few working progress slideshows where you can see the process of each image, Like the one above… Its really interesting and inspiring.

Karezoid Michal Karcz is a photographer from Warsaw, Poland. He first started with painting, which helped him to develop a vision that was hard to create with other visual techniques. Then in early 90s discovered photography. His early fascinations of painting and photography have been combined into one piece, with the use of digital tools. Digital photography gave him the opportunity to generate unique realities that were impossible to be created with an ordinary dark room techniques.

The great vector artist OG Abel was a diamond in the rough. Growing up in violent surroundings, OG Abel found shelter in art. With an unsupportive father who always told him artist die broke, his only creative activity was strongly connected to religion. Having a church-going mother, OG Abel says he would spend hour drawing images from the Bible, his favorite pictures being those of animals, especially lions. He would also study the elaborate paintings in churches, the architecture, and/or the sculptures.