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05-03-2010, 08:01 PM   #1
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Moon through a Pentax Reflex 1000mm

Here's some fun out of our K-7 with the 1000mm attached:

With the Pentax 1.7x TC @ 1700mm:



1000mm:





These were also on a surprisingly hazy night. I'm really looking forward to trying this up camping where the air is crystal clear and without city lights.

05-03-2010, 08:33 PM   #2
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Very nice effort. I'm impressed. I haven't had much luck at this. What were the f stop, ISO, & shutter speed you used.
05-03-2010, 08:48 PM   #3
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QuoteOriginally posted by blackcloudbrew Quote
Very nice effort. I'm impressed. I haven't had much luck at this. What were the f stop, ISO, & shutter speed you used.
for the 1700mm ISO 100 and 1/20th.

The other two were both ISO 100 and 1/30th with a +0.7 exposure compensation.

In all these cases, we focused through Live View, and then waited for our junk tripod to stop wobbling (by watching live view) before triggering the shot with the F remote.

Interestingly, the AF on the 1.7x TC worked well when we did a close enough focus, and then used the AF button in live view.
05-03-2010, 08:54 PM   #4
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Glad to see the 1000mm showed up and you are putting it to good use. Ultra telephotos are tricky, which is part of the fun. It opens up all sort of new possibilities .

05-04-2010, 09:58 PM   #5
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QuoteOriginally posted by cgoudie Quote
for the 1700mm ISO 100 and 1/20th.

The other two were both ISO 100 and 1/30th with a +0.7 exposure compensation.

In all these cases, we focused through Live View, and then waited for our junk tripod to stop wobbling (by watching live view) before triggering the shot with the F remote.

Interestingly, the AF on the 1.7x TC worked well when we did a close enough focus, and then used the AF button in live view.
I think you might want to up the shutter speed a bit, even if you have to go to ISO 200. Search this forum for the apparent speed of the moon. You might be surprised how fast it is actually moving.
05-05-2010, 07:15 AM   #6
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QuoteOriginally posted by Canada_Rockies Quote
I think you might want to up the shutter speed a bit, even if you have to go to ISO 200. Search this forum for the apparent speed of the moon. You might be surprised how fast it is actually moving.
It's not a bad idea. We could visibly watch the moon move in the viewfinder at 1000mm and especially at 1700mm.
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