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Standard zoom and mid range Lenses with focal lengths larger than 12mm, but no longer than 60mm, includes standard zooms and portrait primes plus some macro lenses.

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Old 29th April 2015
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Star Shots

I have a friend who recently moved from Nikon to Olympus and has asked me for a solution to his lens problem. I have no idea, so ask the Forum for help.
He is using a 12-50 lens on an E-M1.
To quote, "Trying to shoot star shots I found it impossible to Manual focus to infinity (Auto focus can't see the stars) as the Olympus has no stop like standard lenses. The focus ring just rotates till the cows come home. The only way I could get around it I thought was to Auto focus on location during daylight,tape the lens so it doesn't move then go out at night and have a go! Then the next night it rained, typical. The 'Live Composite' didn't display any image at all during a 25 minute exposure but it did record 'out of focus' image after a long wait till the buffer unloaded. Again the Nikon, no probs."
Any suggestions appreciated.
Paul
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Old 29th April 2015
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Re: Star Shots

I set the camera to manual focus, focus on something a long way off, and then I can frame the shot and use live composite to take the shot.
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Old 29th April 2015
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Re: Star Shots

When shooting the Aurora, similar in that conditions will be dark and exposure times will be long - 10 - 30 seconds, or longer for star trails, the PRO advice given was to set up and use manual shooting mode. Use a wide angle lens - below 35mm, set aperture on the lowest possible setting and focus just short of infinity. This worked OK when I used the Oly e-3.

Hope this helps?
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Old 29th April 2015
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Lightbulb Re: Star Shots

All cameras will provide for focus to infinity from a point closer to the camera.

This can easily be determined using a "hyperfocal distance" calculator:

http://www.cambridgeincolour.com/tut...l-distance.htm

This is often a better way to set focus as some lenses can focus beyond infinity (even Nikon) and produce out of focus images of stars.

Switch on live view boost to see things in the dark
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Old 29th April 2015
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Re: Star Shots

Quote:
Originally Posted by Graham_of_Rainham View Post
...some lenses can focus beyond infinity (even Nikon)
You'd need a star ship to go beyond infinity, that's for sure. Plus an extra measure of di-lithium crystals.

If parallel lines cross at infinity, logically they must diverge when they get beyond that point. So that's the reason for the blurring, it's all 'clear' to me now.
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Re: Star Shots

Quote:
Originally Posted by Ricoh View Post
You'd need a star ship to go beyond infinity, that's for sure. Plus an extra measure of di-lithium crystals.

If parallel lines cross at infinity, logically they must diverge when they get beyond that point. So that's the reason for the blurring, it's all 'clear' to me now.
BUZZ does it...

There was a debate on why some big lenses are Black and others White:
https://support.nikonusa.com/app/ans...some-lenses%3F

I have used a laser pointer to project a mark a long way away to set a "far distance" focus. In the old days I'd have one of the kids go a long way away with a torch and a white card.

Then I'd pack up the car and drive off before they could get back.
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Re: Star Shots

Thanks for the replies and humorous comments (particularly enjoyed Graham's).
Will send the info onto him and see how he goes.
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