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Forum: Photo Critique 01-24-2019, 01:10 PM  
Night Out of Focus - Blood Moon
Posted By Take-5-JB
Replies: 37
Views: 2,513

Maybe I'm wrong, but 300mm on APS-C sensor (1.5 to 1 for 35mm) would be 450mm equivalent and a 2x teleconverter would make it 900mm. That came from my comment where I used a 300mm f4 with 2x converter on a K3. Most of my issues came in more than one axis direction, not just forward motion blurring due to lunar advance. It was 28 F and I was in a hoodie with no gloves. Totally ill-prepared, forgetful (64 years old) and not as good of an equipment check as should have done. Took into consideration that f5.6 with 2x would be F11.2, f6.3 = 12.6, etc. I just screwed up. Usually when I use 300mm, 400mm, 500mm, etc with a 2x for the moon my shutter speeds are 150 - 500 and all is well even if I forget the SR is on, but here I was nailed by SR and lunar advancement velocity. Glad no lives depended on my operational prep for this one!!!

Forum: Photo Critique 01-22-2019, 05:29 PM  
Night Out of Focus - Blood Moon
Posted By Take-5-JB
Replies: 37
Views: 2,513
I shot with my 300mm f4 with 2x converter on my K3 on tripod (900mm as 35mm equivalent) with manual focus and ISO 100. Had great sharp photos of the moon leading up to the eclipse using f8 & 1/180 or f11 & 1/160. Then as the full eclipse arrived, I went to ISO 200 and f8 or f5.6 with longer and longer shutter speed getting to 15sec. After reviewing, I saw I lost lost sharp images somewhere in there. The pre-shot focus was fine. After all was done I noticed I had failed to turn SR off. All the bad shots were where the longer shutter durations were blurred by the SR affect. I screwed up. Got nice color though. Got to remember to check SR when long shutter duration is used. Kick self here!!!

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