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Old 05-08-2024, 11:28 PM
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Astrofriend (Lars)
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Astrofriend is offline
 
Join Date: Aug 2017
Location: Stockholm, Sweden
Posts: 492
It's big ! Big opening and long back focus, big reason to use medium format lenses. This Pentax lens has ED lenses and this later model has two extra lenses for better correction.

I added more photos and information to my project with this lens:

http://www.astrofriend.eu/astronomy/...ikon-d800.html

Are your astro season going towards the end now ? Our has just started.

Lars
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