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nemesis101
Joined: 25 Mar 2008
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Location: Oregon USA
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 Posted: Wed Mar 02, 2011 11:15 pm Post subject: Minolta RF 500mm with new generic adapter on Panasonic L1 |
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nemesis101 wrote:
These have no post processing and are oversize (I could not see how to post in oversize gallery?)
The exif will reveal much - the first 4 or 5 were hand held in low evening light at ISO 400 the others on tripod in 3pm light at ISO 100
The houses are about 90 meters distant, the trees maybe 120 meters..
The old adapter allowed the lens itself to rotate and made focus almost impossible (and the lens actually fell off the camera but I was lucky and my hand was just beneath it..) The focus is fairly smooth, but this is by no means a 'young' lens!
Doug
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Attila
Joined: 24 Feb 2007
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Location: Hungary
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| Posted: Thu Mar 03, 2011 10:03 pm Post subject: |
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Attila wrote:
Pretty impressive from this long distance.
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nemesis101
Joined: 25 Mar 2008
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Location: Oregon USA
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| Posted: Thu Mar 03, 2011 10:12 pm Post subject: |
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nemesis101 wrote:
Thanks!
If the cloud ever clears, I am going to try for some moon shots...
Effective f8 / 1000mm on Panasonic L1..
Doug
| Attila wrote: |
| Pretty impressive from this long distance. |
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Attila
Joined: 24 Feb 2007
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| Posted: Thu Mar 03, 2011 10:24 pm Post subject: |
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Attila wrote:
Try a 2x TC also if you have any. Focal length is never enough for moon shoots.
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nemesis101
Joined: 25 Mar 2008
Posts: 2050
Location: Oregon USA
Expire: 2015-01-22
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| Posted: Thu Mar 03, 2011 10:54 pm Post subject: |
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nemesis101 wrote:
Attila!
I tried live view to get critical focus on the Panny.. Ouch!!!
Even on a top-flight Bogen tripod with a sturdy arc-swiss head the slightest movement whilst focusing seemed like an earthquake..
I hesitate to think what it would be like with a x2 tele-converter (and I do have a few, as Minolta was my go-to maker back in manual 35mm film camera days) but I really don't think I could hold the camera steady enough to focus?
Any ideas welcomed!
Doug
| Attila wrote: |
| Try a 2x TC also if you have any. Focal length is never enough for moon shoots. |
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Attila
Joined: 24 Feb 2007
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Location: Hungary
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| Posted: Thu Mar 03, 2011 11:07 pm Post subject: |
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Attila wrote:
Focus and wait and use remote shutter releaser. I have no other idea.
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nemesis101
Joined: 25 Mar 2008
Posts: 2050
Location: Oregon USA
Expire: 2015-01-22
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| Posted: Thu Mar 03, 2011 11:24 pm Post subject: |
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nemesis101 wrote:
Yep..
I used the self timer..
it's the focus that is the killer!
| Attila wrote: |
| Focus and wait and use remote shutter releaser. I have no other idea. |
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Attila
Joined: 24 Feb 2007
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| Posted: Thu Mar 03, 2011 11:31 pm Post subject: |
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Attila wrote:
On moon should don't need any focusing I expect from a top lens like this infinity is exactly at infinity.
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nemesis101
Joined: 25 Mar 2008
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Location: Oregon USA
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| Posted: Thu Mar 03, 2011 11:58 pm Post subject: |
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nemesis101 wrote:
Actually, there is about 1cm 'free' at either end of the focus scale, so it can focus 'beyond' infinity? I'm told this was to allow for expansion in the lens components or??
Doug
| Attila wrote: |
| On moon should don't need any focusing I expect from a top lens like this infinity is exactly at infinity. |
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Attila
Joined: 24 Feb 2007
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| Posted: Fri Mar 04, 2011 12:03 am Post subject: |
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Attila wrote:
No idea why , quite common issue on lenses, they not reach infinity focus at exactly at end position. I think you can set daytime where is correct infinity on lens and mark on lens tube. At night you can simple rotate to there without any focusing trouble.
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nemesis101
Joined: 25 Mar 2008
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Location: Oregon USA
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| Posted: Fri Mar 04, 2011 12:15 am Post subject: |
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nemesis101 wrote:
ATTILA!!!!
Why do you have these ideas which are both brilliant and obvious but which, sadly never occur to me? lol
Thanks you!
I am calibrating infinity as I write this...
Doug
| Attila wrote: |
| No idea why , quite common issue on lenses, they not reach infinity focus at exactly at end position. I think you can set daytime where is correct infinity on lens and mark on lens tube. At night you can simple rotate to there without any focusing trouble. |
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Attila
Joined: 24 Feb 2007
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| Posted: Fri Mar 04, 2011 12:18 am Post subject: |
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Attila wrote:
I had almost same case just a few days before, I did sit half an hour an lens what was built into a metal arm I couldn't figure out how can I remove this arm. I did bring stuff to my friend who is repair cameras and lenses. He did laugh and said 'it will be a difficult and expensive repair' he did push and pull on lens barrel and he did un-screw lens from metal arm 
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nemesis101
Joined: 25 Mar 2008
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Location: Oregon USA
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| Posted: Fri Mar 04, 2011 12:53 am Post subject: |
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nemesis101 wrote:
Glad to know that I am not the only one having 'senior moments' Obi-Wan!
Doug
| Attila wrote: |
| I had almost same case just a few days before, I did sit half an hour an lens what was built into a metal arm I couldn't figure out how can I remove this arm. I did bring stuff to my friend who is repair cameras and lenses. He did laugh and said 'it will be a difficult and expensive repair' he did push and pull on lens barrel and he did un-screw lens from metal arm |
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Jesito
Joined: 24 Aug 2007
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Location: Olivella, Catalonia, (Spain)
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| Posted: Fri Mar 04, 2011 7:45 am Post subject: |
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Jesito wrote:
Thanks to both for showing up the problem and the solution!.
I have a similar problem with the Tamron SP 500mm F8, that infinity is not exactly at the end... All my moonshots were blurred.
Now I have something to try.
Again, thanks!
Regards,
Jes.
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nemesis101
Joined: 25 Mar 2008
Posts: 2050
Location: Oregon USA
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| Posted: Fri Mar 04, 2011 8:43 am Post subject: |
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nemesis101 wrote:
Somehow I fear that irrespective of finding infinity, unlike you, I shall have the greatest difficulty finding a clear sky in Oregon where 222 days are overcast every year!
Doug
| Jesito wrote: |
Thanks to both for showing up the problem and the solution!.
I have a similar problem with the Tamron SP 500mm F8, that infinity is not exactly at the end... All my moonshots were blurred.
Now I have something to try.
Again, thanks!
Regards,
Jes. |
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fotomachi
Joined: 02 Feb 2008
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Location: Estados Unidos de las Esferas Ultraterrenales
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| Posted: Fri Mar 04, 2011 10:49 am Post subject: |
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fotomachi wrote:
| Jesito wrote: |
Thanks to both for showing up the problem and the solution!.
I have a similar problem with the Tamron SP 500mm F8, that infinity is not exactly at the end... All my moonshots were blurred.
Now I have something to try.
Again, thanks!
Regards,
Jes. |
Another one that had this problem with the Tamron When this problem occurred the first time, I didn't know much about the technical side of photography though.
I now only use manual focus lenses for night photography that don't focus beyond infinity
For moon photography, I'd like to recommend MrEclipse's website. Contains very useful information on focal lengths, exposure, ... to use.
Easy rule says that (for FF):
Size of moon (mm) = focal length (mm) / 100
You need ~2000mm to fill a full frame frame
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enzodm
Joined: 11 Sep 2010
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Location: Italy
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| Posted: Fri Mar 04, 2011 4:57 pm Post subject: |
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enzodm wrote:
| nemesis101 wrote: |
Even on a top-flight Bogen tripod with a sturdy arc-swiss head the slightest movement whilst focusing seemed like an earthquake..
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so, now you understood what I mean in my thread . I just wait it stops.
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nemesis101
Joined: 25 Mar 2008
Posts: 2050
Location: Oregon USA
Expire: 2015-01-22
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| Posted: Fri Mar 04, 2011 8:49 pm Post subject: |
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nemesis101 wrote:
Actually I am more confused than ever? lol
Doug
quote="enzodm"]
| nemesis101 wrote: |
Even on a top-flight Bogen tripod with a sturdy arc-swiss head the slightest movement whilst focusing seemed like an earthquake..
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so, now you understood what I mean in my thread . I just wait it stops.[/quote]
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