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i need help #9223
06/30/07 01:01 PM
06/30/07 01:01 PM
Joined: Jun 2007
Los Angeles, Ca
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Laurie Sullivan Offline OP
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Laurie Sullivan  Offline OP
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Joined: Jun 2007
Los Angeles, Ca
this is my first post here after weeks of reading and viewing. i really like your site. here is my dilemma, for weeks i have been trying to shoot the moon. well i've got the exposure down, just not the focus part. i'm using a 70-300mm lens. i can't seem to get the moon in focus. yes i've got a tripod and a good one, and yes i'm using a remote release. shooting at the "sunny 16" theory. my D50 only has a ISO of 200. i tried a 2X teleconverter and still i'm can't seem to get it right. please if you have any ideas i would love to have them.

laurie

Attached Files
9218-DSC_00041.JPG (122 downloads)
Re: i need help [Re: Laurie Sullivan] #9224
06/30/07 05:57 PM
06/30/07 05:57 PM
Joined: Jun 2005
TN
Julie Offline
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Julie  Offline
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Joined: Jun 2005
TN
What is your shutter speed?

Re: i need help [Re: Julie] #9225
06/30/07 07:10 PM
06/30/07 07:10 PM
Joined: Jun 2007
Los Angeles, Ca
L
Laurie Sullivan Offline OP
Wanderer
Laurie Sullivan  Offline OP
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Joined: Jun 2007
Los Angeles, Ca
i've tried any where from 150 to 1 sec. setting the f stop as needed. i read where a guy set it from manual to programed auto "P". i'm going to give that a try also.

laurie

Re: i need help [Re: Laurie Sullivan] #9226
07/01/07 11:12 AM
07/01/07 11:12 AM
Joined: Feb 2005
Manhattan, New York, New York
James Morrissey Offline
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James Morrissey  Offline
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Carpal Tunnel

Joined: Feb 2005
Manhattan, New York, New York
Hi Laurie,

COuld you post a slightly larger file? The one you are uploading looks fine to me - I see no motion blur and it looks generally sharp - at least at the size I am seeing.

James

Re: i need help [Re: Laurie Sullivan] #9227
07/01/07 08:13 PM
07/01/07 08:13 PM
Joined: Feb 2006
Donner Summit, CA
glamson Offline
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glamson  Offline
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Joined: Feb 2006
Donner Summit, CA
Quote:

this is my first post here after weeks of reading and viewing. i really like your site. here is my dilemma, for weeks i have been trying to shoot the moon. well i've got the exposure down, just not the focus part. i'm using a 70-300mm lens. i can't seem to get the moon in focus. yes i've got a tripod and a good one, and yes i'm using a remote release. shooting at the "sunny 16" theory. my D50 only has a ISO of 200. i tried a 2X teleconverter and still i'm can't seem to get it right. please if you have any ideas i would love to have them.

laurie




Laurie,

I can't really tell how good your resolution is from the low res web photo, but I'm sure you are probably getting the optimum image you can from your setup. Unfortunately, I can tell you from experience that you don't really have the optics to get the resolution you want. A 70-300mm lens on a 6mp sensor just won't do it (even with a TC). On top of that the full moon is especially hard to capture because of the lack of shadow detail. Here is my best effort using a Tamron 600mm mirror lens, 1/30", f/13 on a D200 body (10mp sensor) with the mirror locked up and a very good tripod. It'a also about a 50% crop. Shooting the half moon at least lets you get some crater shadow detail at the horizon line.

The best moon photos I've seen always come from astrophotograpy with a telescope. If you are really interested in astronomical photograpy, that would be the way to go.

Hope this helps.


ISO1600 won't help [Re: glamson] #9228
07/01/07 08:45 PM
07/01/07 08:45 PM
Joined: Feb 2006
Donner Summit, CA
glamson Offline
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glamson  Offline
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Joined: Feb 2006
Donner Summit, CA
Laurie,

While all the things I said in my previous post are true, I did notice when examining the EXIF data for your image that you had the ISO set to 1600. I suspect you've experimented with changing the ISO but I recommend that you use nothing higher than 400 and 200 would be best. The pic I posted was shot at ISO100.

George

Re: ISO1600 won't help [Re: glamson] #9229
07/02/07 11:26 AM
07/02/07 11:26 AM
Joined: Jun 2007
Los Angeles, Ca
L
Laurie Sullivan Offline OP
Wanderer
Laurie Sullivan  Offline OP
Wanderer
L

Joined: Jun 2007
Los Angeles, Ca
thanks george,

for all your help. it was suggested that i remove the filter also. as for the ISO i thought it was at 200. will check the setting the next time and there will be a next time.

happy 4th everyone

laurie

Last edited by Laurie Sullivan; 07/02/07 11:27 AM.
Re: ISO1600 won't help [Re: Laurie Sullivan] #9230
07/02/07 02:47 PM
07/02/07 02:47 PM
Joined: Mar 2007
virginia beach, virginia, usa
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bob swanson Offline
Tracker
bob swanson  Offline
Tracker
B

Joined: Mar 2007
virginia beach, virginia, usa
My first thought after viewing your images was that you didn't have your mirror locked up. The second thought is that most photographers consider shooting the moon as a daylight exposure. ISO 100 - 200, F 8 - 11, and around 1/30 - 1/60 shutterspeed.
After reading your explanations my second thought might be the infinity focus on your lense. May you need to back off of infinity a touch. Just some thoughts. www.bsvirginian.smugmug.com

Re: i need help [Re: Laurie Sullivan] #9231
07/31/07 01:54 PM
07/31/07 01:54 PM
Joined: Feb 2007
New York, NY
henryp Offline
Wanderer
henryp  Offline
Wanderer

Joined: Feb 2007
New York, NY
The moon gets a full hit of noonday sun so your exposure should follow the "sunny-16" rule. You don't need mirror lock-up, although a tripod certainly cannot hurt.

The sunny-16 rule says, your exposure is f/16 and your shutter speed = 1/ISO, so if your ISO is set to (for example) 400, you'd be shooting at 1/500th sec and f/16.

Focus, of course is infinity.


Henry Posner
B&H Photo-Video

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