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An apochromat, or apochromatic lens (apo), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much more common achromat lenses. The prefix apo- comes from the Greek preposition ἀπό- , meaning free from or away from.
A very bright star and very dark sky are required to produce highly contrasted spikes that are clearly visible. The diffraction effect is similar to producing sunstar patterns in landscape photography with ordinary camera lenses, where the mechanical iris of the lens is adjusted to a small polygonal shape with sharp corners.
We pick the best lenses for astrophotography fans shooting a starry night sky, to suit a range of cameras and budgets The best lenses for astrophotography in 2022: fast ultra-wide lenses for the ...
The Sigma 70-300mm F4-5.6 APO DG Macro lens is a consumer-level, telephoto zoom lens made by Sigma Corporation. [1] Different versions of this lens are produced that work with cameras from Canon, Nikon, Pentax, Konica Minolta, Sony and Sigma. Additionally, Olympus' 70–300 f/4–5.6 lens for Four-Thirds has the same optical design and ...
The Sigma APO 150-600mm F5-6.3 DG OS HSM lens is a super-telephoto lens produced by Sigma Corporation. It is actually a range of two slightly different lenses based on a common design: the Sports and Contemporary. Both lenses feature similar specifications, but there are some notable differences.
Film astrophotography is becoming less popular due to the lower ongoing costs, greater sensitivity, and the convenience of digital photography. Video of night sky made with DSLR camera's time-lapse feature. The camera itself is moving in these shots on a motorized mount.
The J-3 camera on board the KH-4B spy satellite was planned to use a 24in f3.5 Petzval lens. [4] In 2013, Lomography successfully launched a crowdfunding campaign at kickstarter.com to produce a new Petzval lens in Russia for film and digital cameras. [5] Lensbaby offers Petzval lenses for modern cameras under the Burnside and Twist names. [6]
Astrophotography cameras (3 P) Pages in category "Astrophotography" The following 26 pages are in this category, out of 26 total. This list may not reflect recent ...
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