Present: R Evans, R Bonella, P Childs, D Connell, G Deutscher, G Moore, M Neilsen, B Parker, D Warner, Apologies: N Arnold, J Devenish, C Korgitta W Janssen Discussion: Know your Camera: Last month we had a discussion on sensor cleaning with the suggestion that it should be done by an expert. Provided care is taken it is possible to clean your own camera sensor. A 14:36 min video ‘How to clean your DSLR camera’s sensor’ was shown (https://www.youtube.com/watch?v=pesZUj78S6s) and this was followed by a short discussion. Roger had purchased a dust-aid cleaner kit from ‘Camera Check Point’ http://www.cameracheckpoint.com.au/pages/dust-aid-platinum-sensor-cleaning.html for about $48 but hasn’t had to use it yet. Aspect Ratio and sensor size The sensor size used by modern digital cameras determines several of the camera parameters such as the focal length of the lens and depth of field. A 13:39 minute training video ‘Full Frame Sensors vs Crop Sensor Cameras’: https://www.youtube.com/watch?v=yAdI5BBgFHQ was shown to provide a better understanding of the importance of sensor size. A full frame sensor is defined as being the same format as a 35 mm (film) camera – approx. 36 mm x 24 mm. Other sizes are specified to be ‘crop sensors’ with the various sizes shown at the end of these notes. Macro Photography using a reversed standard lens: Brendon showed how, with the aid of a cheap adapter ring, a camera lens could be reversed to provide for macro photography. The main difficulty with this arrangement is that the lens electronics are no longer connected which means that focussing and aperture settings no longer work. Focussing must be done by physically moving the camera and the aperture setting can be set by locking the aperture before removing the lens from its conventional position. Brendon also exhibited his Olympus Tough TG-4 camera which does a very good job of Macro photography and was cheaper than his macro lens. The TG-4 is also waterproof to 15 metres. See: https://www.olympus.com.au/Products/Compact-Digital-Cameras/T-Series/TG-4/Overview. Brendon showed us a number of excellent macro photographs taken with the TG-4 and his Canon with the lens reversed Short Videos: Since we haven’t included videos at a meeting for some time a quick poll was taken of those present to determine how many members took videos. The result was that most members either take videos or time lapse pictures that can be made into a video and so we will tentatively include videos at a meeting early next year. We need to decide whether to specify the topic or to leave it open Photo Critique: Eight members submitted portrait photographs for critique at the meeting but, before reviewing them, the convener suggested that the members should try to define what makes a good portrait photo. There was some agreement that the faces should be in very good focus and the background should be out of focus, or blank, to not be distracting from the main subject. The ‘rule of thirds’ could also be used but it was generally agreed that the assessment of what constitutes a good portrait photo is fairly subjective The photos chosen as the best from each member are shown below: The next (October) meeting will be hosted by Wyn Janssen. The camera technical topic will be AF (Auto Focus) point selection and the photo critique will be 'Gardens and flowers'. Thanks to Daryl and Elizabeth for hosting this meeting Comments are closed.
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AuthorThe Photo Interest Group PhIG was formed as one of the special interest groups of the Wollongong Probus Club Inc Archives
October 2019
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