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Old Jan 28, 2010, 9:49 AM   #1
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Default The moon at 500, 700, and 1000 mm

I've been playing with my new (to me) SMC Pentax 1:8 f=1000mm lens (that's the official, confusing, name). Yesterday evening just after sunset I had some time to shoot the nearly full moon. I used my K20D and the 1000mm lens at f/11. ISO was set at 200. I also set up my Bigma (Sigma 50-500) both by itself (at f/8) and with the matching 1.4x teleconverter for 700mm. None of the shots are cropped, so you'll get a feel for how each lens/combo fills the frame. Also, the light was rapidly changing during the ~30 minutes I was shooting, so that's why it's different for the different shots. You can see the full sized shots in the Flickr set. Finally, I have a "bonus" shot at the end.

First, the 1000mm:


Next, the moon with just the Bigma at 500mm:


Then, the Bigma with the 1.4x teleconverter (700mm):



Finally, just for fun, I attached my Olympus E-P1 to the 1000mm lens via my K-mount to Micro 4/3 adapter. The Pen will actually fit inside the front lenscap for this lens, and on the rear, it looks like a rear cap!


And here's the moon from the Pen (2x crop factor on the 4/3 sensor):
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Old Jan 28, 2010, 7:47 PM   #2
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Wow...great photos there. I spent a few minutes just looking at the craters on the last photo. Thanks for sharing these.

Rod
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Old Jan 29, 2010, 5:08 AM   #3
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Default wow

great moon shots!!
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Old Jan 29, 2010, 5:29 AM   #4
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Nice work with that good old lens! Do you get much CA with this lens?

(sure is amusing to see the Oly on this lens!!)
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Old Jan 29, 2010, 9:04 AM   #5
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Thanks for the comments. I get a little CA on the shots, but it cleans up easy enough in post processing.

I learned when I bought my first SMC manual lens that CA and purple fringing can be a real problem if I don't nail the exposure. However, they can also give great shots, so I just learned to deal with it.
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