The maximum exposure time of 1/3 seconds was used. EXIFEDITOR TORRENT PLUSThe iPhone 6s Plus camera has a fixed aperture of f2.2 and fixed focal length of 4.15mm, equivalent to 29mm for a camera with a full-frame 35mm sensor. Manually select and fix the focus, exposure time, ISO, and temperature of the frames used by this app to build up the light trails. "Dark frames" are used during post-processing to compensate for the bias and offset characteristics of the response from each of the sensor elements (pixels). These frames are shot whilst blocking out all light from reaching the sensor via the camera lens. Don't forget to take one or more "dark frames" using the same camera replacement app and settings as the long exposure. Don't forget to capture low-noise photographs before or after the main shot to serve as possible backdrops for the star trails. Select "light trail" mode for all photographs. EXIFEDITOR TORRENT BLUETOOTHMiniature Twin Lens Reflex (TLR) bluetooth wireless remote shutter trigger.īattery drain was approximately 25% per hour I am most certainly not saying that the iPhone is a serious rival to these cameras! It is still impressive to me, not least because it can image objects in low light that are dimmer than I can see unaided.īarton, Australian Capital Territory, Australia. Of course, it would never be fair to compare the results here with what could be obtained by dedicated cameras that have notable low light performance such as the Sony a7S. EXIFEDITOR TORRENT ISOI estimate that I could image star trails down to brightness magnitude 2-3 with my iPhone 5s and that I am seeing star trails down to brightness magnitude 4 with the iPhone 6s Plus before they are obliterated by high ISO speckle noise. The improvements have been in both the hardware and the capabilities of the camera apps (e.g., NightCap Pro). I was impressed with the improvement in low-light performance of the iPhone 6s Plus in comparison with the iPhone 5s that was the iPhone model that I used when last taking star trail photographs. The Southern Cross was sadly just out of frame above the upper edge.ĭid anyone else see the crazy trails produced by moths flying around the light in the lower right quadrant? Or the hundreds of ghost outlines of me as I paced up and down along the path trying to keep warm during the long exposure? The remaining trails were from stars from the Scorpius and various lesser constellations. The brightest trail, seen in the lower left quadrant, belonged to Venus. The trails appear to be circling around this point. The South Celestial Pole was located out-of-frame, beyond the top right corner. Reflections from the lights were reaching the camera from much larger areas than would be the case if the lake surface had been still. The apparent spread of these reflections was a consequence of the gentle breeze that was generating ripples. Reflections of the building and street lights were recoding in the long exposure photograph, and they covered a broad areas of the lake surface. The prominent red light was on top of a crane being used in the ongoing building activities. The star trails in the shot are "anchored" by the view of the buildings in the Kingston Foreshore development that line the edge of Lake Burley Griffin. If nothing else, I have used the shot to provide the opportunity to post various notes on the gear used, the protocol used when shooting, and the post-processing carried out. On this morning, I packed up and walked away well short of this, but trying to convince myself that the shot could still be worth posting. In a developed area such as this, clouds reflect the ambient light from things on the ground, and this light can wash out any other features in the sky region of a long exposure photograph.įor several weeks now, I have been fine tuning my procedures and looking for an opportunity to get a shot with a minimum exposure length of 90 minutes or so. There was scattered cloud cover, and after 33 minutes, I had to terminate the exposure so as to avoid having the view of the celestial objects obscured by the light associated with an approaching bank of thick clouds. I will call this a (relatively) short "test shot" of some star and planet trails.
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