Innholdsfortegnelse for March - May 2023 i Photo Review

The picture on this page is of a place that does not exist. It was not taken with a camera, indeed it was not taken at all. It began instead as the following sentence: “Granite boulders along a small stream with patches of clear water flowing through a Snow Gum forest in the Snowy Mountains of Australia on a stormy, snowy winter afternoon in the style of Ansel Adams using Kodachrome film to capture the muted colours.” I entered the above text on the DeepAI website’s free Text to Image - AI Image Generator (www.bit.ly/PR95editorial). The DeepAI needed about 8 seconds to produce a 768 x 512 pixel image. I downloaded and then opened the file in Adobe Camera Raw (the original is in JFIF format) where I applied ACR’s…

Why Visit? People come to the Mount Lofty Botanic Garden for many different reasons. Some come to see the plants; others for bird-watching and photography and still others to explore the walking trails that run through the 97-hectare site. These range in difficulty from wheelchair-accessible paved paths to relatively steep climbs. The maze of paths also offers different horticultural experiences. The Nature Trail shows some of the native flora that would have populated the region before European settlement. (It’s worth noting the iconic Heysen Trail passes through this section.) The Lakeside Trail, which was officially opened in 2015, was designed to provide access for everybody, from young families with prams to the elderly with limited mobility. It also caters for people with limited understanding of English and people with disabilities,…

‘I was nosy as a small kid,’ says Rachel Mounsey. ‘Once I stole the neighbours' letters out of their letterbox. I didn't open them of course, but took them home, just so that I could hand deliver them – and get a look inside their houses. I guess I've always wanted to look in other people’s houses and find out about their lives. I really liked that. And I really liked meeting people.’ Rachel grew up in the Victorian town of Moe during the 1980s. It was still mainly an industrial town where most of the workforce was employed in the electricity sector’s power plants and brown coal production. ‘Mine was a typical working class family, you go to school, come home, you don’t over dream. But I was a…

Correct exposures rely on three inter related parameters: aperture, shutter speed and ISO sensitivity. Change one parameter and its influence will affect at least one of the others. This relationship is often depicted in an ‘Exposure Triangle’ graphic, which is shown on this page. Lens aperture The aperture of a lens controls how light passes through to the sensor that collects the signal. Unlike your eyes, where the iris diameter adjusts automatically in response to changes in ambient lighting, lens apertures must be adjusted, either by the camera when one of the auto-exposure modes are selected or by the photographer in manual exposure mode. Aperture settings are specified in f-stops, which are expressed as fractions that indicate the ratio of the focal length setting to the effective diameter of the…

Blacks Waterhole By Robynne Hayward Second winner Image Review 14 Canon R6; RF 24-105mm f/4 lens Booderee National Park, Jervis Bay, NSW Don’s response Capturing the spirit of the Australian bush is not an easy task. It is so visually "noisy" and apparently chaotic, that discerning a pattern or even a point of interest is dauntingly difficult. Photographer Robynne Hayward’s composition finds a way through the problem by positioning the intriguing shape of the mirrored tree branch in the centre of her frame. Once we have that anchor point we're more likely to notice the pattern of vertical elements on either side. The welter of vegetation is no longer as overwhelming and we have a sense of place. Glenmaggie Abstract By Graeme O'Rourke Canon 5D Mark IV; Tamron 35-150mm lens;…

I was able to spend 90 minutes with a rather severe-looking beaked sea snake, tracking it to the surface and following it down again. At first glance, the online book Wakatobi Reef Life looks like an underwater photographer’s dream assignment. In fact, it was an epic, unpaid labour of love, and putting its photos of about 400 tropical fish and invertebrate species into a book was an afterthought. Perth couple Pam and Wayne Osborn have been going to Wakitobi Dive Resort in Indonesia once or twice a year for 11 years (except when the trip wasn’t possible due to COVID-19). On a typical day, Wayne has exercised his passion in retirement for taking underwater photos from offshore dive boats – 400 scuba dives and counting. Pam has sometimes gone with…

If you’re venturing into video, you should understand how video recordings are created and viewed and the terminology used for describing video. Over time, changes in technology have led to some confusing terminology which is often reflected in cameras’ menus. Video codecs Each video recording must stipulate how the video and audio signals have been combined, using a ‘codec’ (coder/decoder) that also specifies how to play the recording back. The encoded data is held within a digital container, as shown in the diagram right. Hundreds of audio and video codecs have been created for different uses. Some are compatible across many hardware and software platforms, while others are specific to professional equipment. The most popular consumer codecs are MPEG-4 with the MP4 and MOV containers and Sony’s proprietary XAVC and…