David's Images of the Day Photoblog
Into the Vortex. Early Morning Backyard Star Trails (and one meteor trail). Composite of 300 images taken with a Nikon D3x camera and 14-24 mm f/2.8 lens (ISO 100, 14 mm, f/4, 59 sec) over a 5 hour period combined using startrails.exe.
Last night the sky was clear, and the waxing gibbous moon (61%) bright, so I set up a couple of cameras with big lenses out on the deck. One of the systems (Nikon D4 camera TC-E III 20 teleconverter and 600 mm f/4 VR lens (ISO 400, 1200 mm, f/8, 1/60 sec)) was set to record video (1080p, 30 fps). While reviewing the videos I noticed one with something (a bird?) passing in front of the moon. Played back at 10 fps shows the transit to occur over 25 frames.
Between thunderstorms I have been experimenting on the best way to photograph fireflies. I want to capture both the number and movement of the fireflies. I set out three cameras to take a series of 30 second images. The images were then combined into a composite using the startrails.exe program. For these three composites I used relatively high ISO’s and narrow apertures to get a wider depth of field. C&C appreciated.
The bad news that I heard today is that the Sirius/XM Book Radio channel is going away as of 15-July-2013. The Book channel is about the only reasons I have kept up my subscription to Sirius/XM. I have the Book channel on 24/7 both at home and in my car. My long distance drives will not be the same when lost listening to a story.
One of the issues I have had with the Nikon 1 “mirrorless” cameras is the lack of wide-angle lens options. The widest angle available with the initial set of lenses was 10 mm f/2.8 prime. This has a 77° field of view (FOV) equivalent to a 27 mm lens on a full-frame (FX) DSLR camera. I like taking wide-angle panorama landscape images when traveling. In order to do this with the Nikon 1 camera requires taking several images and then stitching them together during post-processing. Before going to Norway, I saw a note on the internet that the Olympus FCON-T01 Fisheye converter uses the same 40.5 mm thread that the Nikon 1 10 mm f/2.8 lens uses. The 0.74x adapter increases the FOV to something like 20 mm on a FX DSLR camera. I took this combo with me to Norway, and published an image of Greenland from 36,000 feet using the combo. (19-February-2013).
Since returning from Norway, Nikon released a new wide-angle telephoto lens for Nikon 1 cameras – the 6.7 – 13 mm f/3.5-5.6. At 6.7 mm this lens has a 100° FOV equivalent to a 18 mm lens on a FX DSLR camera. The following three images were taken with the Nikon 1 V2 camera 1) with the 10 mm f/2.8 lens; 2) with the 10 mm f/2.8 lens and the Olympus fish-eye converter; and 3) with the 6.7-13 mm lens at 6.7 mm. The wide-angle image with the 6.7 mm does not have the fish-eye curvature effect. Indeed, when in Norway I found that when I used the Olympus lens I would need to keep the horizon right at the middle of the image. I think that I will be adding the 6.7-13 mm lens to my light-weight travel kit.
Note: Nikon changed the threading on the 6.7-13 mm lens to 52 mm, so I can’t use the Olympus adapter with this lens 😉
I got up really early before dawn to see the night sky in the southern hemisphere. I’ve wanted to see the Southern Milky Way and the Large and Small Magellanic Clouds. This was the first time that I saw the Orion constellation upside down. I don’t recognize many of the other stars and southern constellations. Images while staying at Hosteria El Pilar in El Chalten in Argentina.
