p.1 #3 · NASA photos via Discovery from a D3X & a 800mm(?)
They've been using the 200F/2VR and 400F/2.8 (the 400VR since 2006) as a package with the the 2.0TC ever since the 200mm and the new 2.0TC was in prototype form back in 2002 - NASA had them before they went into final production, 2003 or something like that. Don't ask me why they use that combination, I'd think that the 300+400 & 2.0TC or the 200+300 & 2.0TC would be a better choice, giving either 300-400-600-800 or 200-300-400-600... Now they've got 200-400-800.
I've got a few pictures of the first prototype 200F/2VR as it was sent on the first journeys, with a slightly different exterior than the final production version. And I'd kill for one of the first NASA/ESI-spec 2.0TC's... Which are reportedly hand selected & slightly different speced than the "normal" TC as we can buy it. :-)
p.1 #5 · NASA photos via Discovery from a D3X & a 800mm(?)
The EXIF data is inconsistent. For example, the 2nd one on the page is listed as 800 mm, but the data shows 300mm at f/5.6. The first one is 800mm. I wonder if there are so many hot pixels from comic rays?
p.1 #9 · NASA photos via Discovery from a D3X & a 800mm(?)
theSuede wrote:
They've been using the 200F/2VR and 400F/2.8 (the 400VR since 2006) as a package with the the 2.0TC ever since the 200mm and the new 2.0TC was in prototype form back in 2002 - NASA had them before they went into final production, 2003 or something like that. Don't ask me why they use that combination, I'd think that the 300+400 & 2.0TC or the 200+300 & 2.0TC would be a better choice, giving either 300-400-600-800 or 200-300-400-600... Now they've got 200-400-800.
I've got a few pictures of the first prototype 200F/2VR as it was sent on the first journeys, with a slightly different exterior than the final production version. And I'd kill for one of the first NASA/ESI-spec 2.0TC's... Which are reportedly hand selected & slightly different speced than the "normal" TC as we can buy it. :-)...Show more →
p.1 #11 · NASA photos via Discovery from a D3X & a 800mm(?)
......-"Working off the Russian discretionary “time permitting” task list, Padalka conducted a session of the GFI-8 "Uragan" (hurricane) earth-imaging program, using the NIKON D3X digital camera with SIGMA 300-800 telephoto lens for subsequent downlinking on the BSR-TM payload data channel. "
:-)
I've misplaced the link where the prototype 200F/2VR and the TC20 is together with a D2x on an earlier mission... If I remember where it was, I'll update.
p.1 #15 · NASA photos via Discovery from a D3X & a 800mm(?)
Hot pixels?
Take a long exposure shot with the long exposure noise reduction function set to off. You will see a lot of them in your image.
Apparently the sensor gets hot enough for the blue, green or red pixels to pop up.
If you take shot at say 1/60 of a sec. you'll never see them.
I recently took a nightshot with an 8 minute exposure and I've got I guess a hundred such pixels. With long exposure function set to ON not even one showed up.
Read this: https://www.fredmiranda.com/forum/topic/813560
p.1 #18 · NASA photos via Discovery from a D3X & a 800mm(?)
Gregg B. wrote:
Hot pixels?
Take a long exposure shot with the long exposure noise reduction function set to off. You will see a lot of them in your image.
Apparently the sensor gets hot enough for the blue, green or red pixels to pop up.
If you take shot at say 1/60 of a sec. you'll never see them.
I recently took a nightshot with an 8 minute exposure and I've got I guess a hundred such pixels. With long exposure function set to ON not even one showed up.
Read this: https://www.fredmiranda.com/forum/topic/813560
Well, that's all fine and whatnot, but these are not even close to being long exposures. The EXIF shows them to be ISO 200 at 1/2500 second exposure.
p.1 #19 · NASA photos via Discovery from a D3X & a 800mm(?)
The photos posted directly to the thread could have been taken with a Kodak, who knows what kind of use and abuse those bodies have endured. It looks like whatever took them doesn't have a moire filter. I wonder if sensor heat becomes more of an issue in a partial vacuum.
