165 f/2.8 OR 200 f/4 for Pentax 6x7?
Posted 11 May 2013 - 11:23 PM
Posted 12 May 2013 - 06:05 AM
Posted 12 May 2013 - 09:18 AM
If there was something rare, excellent, and not too expensive up for sale right now somewhere, I'd consider finding a way to pay for it. But I suppose I can wait till I actually get the camera, too!
Posted 12 May 2013 - 09:24 PM
I noticed a couple of things at the link that raised some questions: First, you said this was done on Fujicolor 100 negative film; can you say something about it? How is it different (better?) than, say Provia 400x? Also, what scanner are you using? And, last, now that I have a 55 and 200, would you think a 105 would be good, for either daylight or astro?
I'm probalby not going to run out of questions very soon, but I won't ask for all of the answers from you.
Posted 13 May 2013 - 05:28 AM
The film is scanned on an Epson V600, stitched and post processed in Photoshop.
The 105 yields a larger field of view and a flat field at f/4.8 allowing wider field mosaics such as this one.
A slightly larger version of the above mosaic can be found here:
This type of work requires very long exposures on the same night. The image above started at the south horizon first and worked my framing up as the night progressed. The three hour of exposure was constantly monitored for aircraft and bright satellites. This is not easy work and I doubt many, if any, will duplicate it. Perfect polar alignment allows the 60 minute exposures at high declinations without field rotation.
I enjoy the challenge and its rewards. The image itself is the ultimate reward and sharing it is a pleasure.
The setup can be viewed here:
I believe this may spark more questions Paul.
Posted 13 May 2013 - 09:39 AM
I'll probably have more questions later, but right now, I have to go ship that camera I had up on eBay, to China.
Posted 13 May 2013 - 12:01 PM
The three hour of exposure was constantly monitored for aircraft
Now tell the truth Jim, when was the last time you saw an airplane up there in the middle of nowhere? I couldn't resist, living just 60 miles from the Atlanta International.....
Posted 13 May 2013 - 04:22 PM
Posted 14 May 2013 - 12:26 AM
Posted 28 February 2014 - 03:18 PM
Posted 03 March 2014 - 08:39 PM