Photography with A7s
A7s has a very sensitive sensor and can work with very low level of light !
I] Tripod* DSOs !
* Middle class quality photo tripod ...
Clic on images for full size
Using the A7s in "Finder mode" ... just start recording
a test movie, increase the ISOs and center the object !
Below unprocessed movie, just resized 634x348, decimated 10x and converted to GIF (note New beta version of SER Player under test)
at a relatively dark place on beach, but still see conditions looking North on 5s exposures ISO 800 ! Atlantic Ocean is left ... where it is dark !
2016 Oct, 14
Milky Way on Ocean, single 5s exposure, ISO 6400, Sony raw ARW, average quality 28 mm lens, Processing Irfanview
M45 Pleiades & Hyades (see Aldebaran), average quality 28 mm lens, mosaic of 2 screen capture from live video
Hercules Globular Cluster [M13 / NGC6205], 50 x 2s, ISO 12800, Sony raw ARW, Sigma mirror lens 600 mm F8, Processing DSS, resized 40%
Andromeda Galaxy [M31 / NGC 224], only 16 x 2s, ISO 64000, Sony raw ARW, Sigma mirror lens 600 mm F8, Processing DSS, resized 34%
Deneb region, single 5s exposure, ISO 6400, Sony raw ARW, average quality 28 mm lens, Processing DSS, resized 1080p
II] Tripod Sun
Montalivet France, facing
Movie mode, 50 FPS, 1920 x 1080
2016 Sep, 28 18h50 UT,
Screen captures ...
Green flash movie : https://youtu.be/aS22Ng514CU