The Origins of the SLR & the Pathway to the Pentax 100th Anniversary
A series of articles counting down to Asahi (Pentax) 100th Anniversary
By Merv-O in Columns on Apr 28, 2019
Pentax Forums will be presenting a series of articles on the evolution of the Single Lens Reflex (SLR) Camera from obscurity to its present iteration known as the DSLR and particularly Pentax's present-day flagship, the K-1 Mark II. The series will continue through November, 2019 when we celebrate the 100th Anniversary of the ASAHI Optical Co., the founders of the Pentax Camera.
Origins of the Single Reflex Camera (SLR)
Many of you are familiar with the SLR as one's every day camera, yet many of you are likewise unaware that the origins of the Pentax SLR (and for that matter, all makes) actually has its origins in the 4th Century BC (circa 330 BC) as a means to protect one's eye from damage in viewing a solar eclipse.
Aristotle and his contemporaries described a metal plate punched with small holes through it and then held up to the sun which would then project a corresponding image onto the ground. In essence, the foundation of photography is based upon this simple optical principle.
In the 11th century, a remedial version of a 'camera obscura' (Latin for 'dark chamber') was developed. A room or a box lit only by a single small hole or window that admitted daylight would create a shadow image of the outside world on the opposite wall. Later in the 13th Century, a medieval inventor named Roger Bacon used the 'camera obscura' technique with mirrors to project optical sites and illusions by projecting sun visions on an opposing wall
Camera obscura concept
However, it was not until the Renaissance period that brought more rapid development of the use of mirrors in creating images. Leonardo Da Vinci is credited with using a camera obscura to draw but that claim has been debunked. In fact, Da Vinci built a small camera obscura to test his theories of the human eye and depth perception, but without a lens, Da Vinci's camera obscura was not effective.
Part 3: How Godzilla stomped on my Lightroom habit
ON1 Photo RAW 2018's Effects and Layers modules
By johnhilvert in Columns on Apr 23, 2018
Our intrepid software dabbler, John Hilvert, concludes his migration from Lightroom v6.14, venturing further in his odyssey with ON1 Photo RAW 2018. Exploring its advanced capabilities, he initiates the Godzilla and Inception projects amongst others. He returns from the journey, renewed and ready to be a better Pentax post-processor than before.
Yet he discovers a downside from this empowerment. Though ON1 delivers impressive features, it seems inconsistently organised, making future workflow and interface improvements essential for post-processing without tears.
Lumenzia Action Panel Review
Premium photohop plugin for luminosity masks
By Black Mesa Images in Columns on Dec 29, 2017
In my previous article, I introduced you to
Lumenzia Action Panel for Photoshop
Luminosity masks for image enhancement
By Black Mesa Images in Columns on Nov 9, 2017
In the last several years, the use of luminosity masks the Photoshop post-processing workflow has exploded in popularity. Just as recently as a couple of years ago, luminosity masks seemed to carry with it an aura of “next level” knowledge in Photoshop. That myth was not far from the truth as luminosity masks were created manually and took a long time to use.
Tell us About Your Photo, Lauri Koivuluoma
Ephemeral Finnish Landscape
By K David in Columns on Jan 18, 2017
Each month we pick a forum photographer with a stand-apart image in a non-contest thread. This article will allow the photographer to tell us a bit about their photo and themselves, providing a larger context to the image.
Stickl posted the first K-1 photo we've selected for this series, a fantastic shot capturing soft, morning light and fog moving through an evergreen forest in the thread Post your K-1 pictures. Thank you, Lauri, for taking part in this ongoing series and for this fantastic example of Pentaxian nature and landscape.
Ephemeral Finnish Landscape (click to enlarge) | Stickl
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