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Forum: Pentax K-1 & K-1 II 06-04-2022, 04:25 PM  
Post your K-1 pictures!
Posted By Colorado CJ
Replies: 38,153
Views: 3,757,658
K-1, Sigma Art 35mm F1.4

Devils-Tower-Small-Final by Colo CJ, on Flickr
Forum: Pentax K-1 & K-1 II 09-11-2019, 12:47 PM  
Post your K-1 pictures!
Posted By Colorado CJ
Replies: 38,153
Views: 3,757,658
Pentax A 645 120mm Macro with the K1

Just a test. It was evening, so this was at 3200ISO at F8.

I think I am going to like this lens!

Forum: Pentax K-1 & K-1 II 11-02-2018, 08:51 PM  
Post your K-1 pictures!
Posted By Colorado CJ
Replies: 38,153
Views: 3,757,658
Tonight I got my Explore Scientific ED80 in. I also ordered the field flattener, but I didn't know it wasn't for DSLR's. I tried it out anyway tonight since I couldn't wait to modify my t ring for the right backfocus tomorrow.



It was very windy, and I am just using a lightweight tripod, so I was only able to take 11 photos and had to limit my exposures to 20 seconds each. I am using my Pentax K-1 with Astrotracer so I am not using a tracking mount.

Anyway, for the short amount of total exposure, and the incorrect backfocus on the field flattener, I can already see that the ED80 is going to be a huge improvement to my new hobby of astrophotography. So long old soviet lens ;)



Here's a quick edit from the session tonight,



Andromeda 11 Stacked ED80 by Andrew Marjama, on Flickr
Forum: Pentax K-1 & K-1 II 10-24-2018, 06:34 PM  
Post your K-1 pictures!
Posted By Colorado CJ
Replies: 38,153
Views: 3,757,658
7, 50 second exposures staked in Astro Pixel Processor. I used an old Soviet Tair 3 300mm F4.5 lens wide open for this shot.

Andromeda - 8 Exposures - 50 sec each by Andrew Marjama, on Flickr
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