A photographic lens’ focal length has no direct relationship to the angle of view, or determining whether it is a wide-angle or telephoto lens. Read this article and understand what focal length, angle of view and image circle really are.
To put an end to the wild times of Flash Powder, magnesium ribbons and sheets, one had the ingenious idea to put the magnesium inside a glass bulb and light it up with an electric spark. It avoids the smoke and the handling of raw chemicals. But as the quantity of heat released in the…
Pacemaker 45 Crown Graphic | Graflex Graphic cameras, from Graflex, are the “press camera” par excellence. In any picture or movie from the 30 to 50’s, whenever you see a gathering of photo reporters, forming a front line and waiting for any special event or celebrity to show up, you will always find many of them holding a…
Popular portrait, at peace with fantasy It allows plenty of good insights the exhibition, Retrato Popular, do vernáculo ao espetáculo, (Popular Portrait, from vernacular to spectacle) on show at SESC Belenzinho – São Paulo, since May 6 and ending July 31, 2016. First by providing an encounter of popular art, that is made for straight consumption as it is,…
Article explains a method for evaluating lens aperture without dismantling the lens. It can be also the basis for calculating diaphragm diameters for Waterhouse stops according to a desired apertures scale.
If you ever gave up about a camera because of missing or broken ground-glass you will regret about it after reading this post. It is very easy to produce a high quality ground-glass for replacement or for a new project for a large-format camera. Nowadays when old processes, old lenses and cameras are getting more…
Small and stylish device for using powder flash. The burning is manually induced with a mechanism that activates a lighter stone. Track the burn at 1/15s intervals and understand how to synchronize with the camera’s trigger.
Flash powder, light a lot with just a little Everyone has seen a photographer, in movies, burning something that seems to make more smoke than light. That was the flash powder. It consists of a metal part and an oxidant. A mixture that resembles gunpowder. This was used for photography from its very first decades up to nearly…
Very robust and reliable TLR camera. Because it has a bellows, it offers the convenience of a small selection of interchangeable lenses and also various accessories such as a porrofinder (pentaprism viewfinder) and a grip. Interesting option for 120 films in 6x6cm format.
What is a photographic lens? Any scene you can shoot is made up of objects that emit light (own or reflected) and it is from this light that the lens will form an image to be recorded on film or digital sensor. If it were possible to block almost all light coming from a scene,…
A legend in photography, the Leica designed by Oscar Barnack was visionary, creative and anchored by an obsessive mastery of execution. Ironically, it was the microscope manufacturing engineers who saw the enormous opportunity that was opening up and knew how to conquer and maintain their territory for decades.
Light and colors, physics and perception Yes, light is a wave, and then … Wave, is a phenomenon in which there is energy transmission without transport of matter. It’s like energy traveling in space. It is easier to understand if we think of an example where there is matter transporting energy. For example, to drop a…