Page 9 of 140 FirstFirst ... 56789101112131959109 ... LastLast
Results 121 to 135 of 2091
  1. #121
    Joined
    Oct 2001
    Location
    Southern Ontario
    Age
    45
    Posts
    13,194

    Re: To our resident camera buffs...

    Yes, that lower right image of the moon is definitely backwards! Not exactly sure what caused it. Maybe the filter, not sure. Was this off of a 300mm lens? Looks like it.

    The biggest problem with shooting the moon is it's an extremely bright object on a very dark background. And to make matters worse, it's fairly small too. So this tends to through the light meters off. Even though you may get your aperture and shutter speed set right, the light meter will probably read low. You can help correct this metering error by using what's called 'spot metering'. Check your manual, it'll describe how to set it, and what each of the metering modes do.

    Now for the funny bit... I just bought a book on Saturday that has tables for shooting the moon. It was meant for film based photography but it should be applicable here. It should be a good starting point:
    Code:
    Full Moon
    
    ISO 80~125
    f/5.6   1/500
    f/8     1/250
    f/11    1/125
    f/16    1/60
    
    ISO 160~200
    f/5.6   1/1000
    f/8     1/500
    f/11    1/250
    f/16    1/125
    
    Crescent Moon
    
    ISO 80~125
    f/5.6   1/60
    f/8     1/30
    f/11    1/15
    f/16    1/8
    
    ISO 160~200
    f/5.6   1/125
    f/8     1/60
    f/11    1/30
    f/16    1/15
    Yes, these are much lower ISO settings. I'm not sure how much better the DR XT or XTi are over the original DR, but I found I had a lot of noise at ISO settings of 800 and 1600 so I normally tried to avoid them. But if my exposure time was a second or longer, I found the noise to be distracting at the lower ISO settings too. Hence in those instances I used the higher ISO settings to reduce blurring from camera shake and/or movement of the subject. And seeing as the moon moves, my book suggests about 5 seconds max for 200mm lens. But if this table is any good, then we shouldn't need to go to an exposure anywhere near that long.

    The book has a much larger table then what I shown here. But this will get you started. I'm actually can't wait to try it out my self.

    Another thing to remember is to use a remote to activate your shutter or to use the built in 10 second timer. This allows the camera and tripod to stop shaking after you press the shutter button. You'll be really surprised how much this can improve an image. I forgot this lesson on my Montreal trip, but it forced me to realize I needed to buy a remote for my camera.

    BTW, the wireless remote for the Digital Rebel cameras (RC-1 I think) should now run about $35 CDN.
    Last edited by Spankin Partier; 01-02-2007 at 11:13 PM.

  2. #122
    Joined
    Oct 2001
    Posts
    5,942

    Re: To our resident camera buffs...

    Thanks for the replies Fluff, and SP. Fluff next time i`ll try the darker route(good advice), and no there`s nothing done(no cropping, just straight shot). SP, i used the 70-300mm IS lens for that shot. What`s the title of the book? I think it might help to read more before my next night adventure. Yeah i bought the RC-1 wireless remote already($35 is right). Dang, i didn`t even think to use it(doh).

    And Fluff, that`s one sweet tripod setup.

    Thanks guys for all your great advice.

    EDIT: Added pic info.

    File Name IMG_0130.JPG
    Camera Model Canon EOS DIGITAL REBEL XTi
    Shooting Date/Time 1/2/2007 6:41:33 PM
    Shooting Mode Program AE
    Tv( Shutter Speed ) 1/15
    Av( Aperture Value ) 5.6
    Metering Mode Evaluative Metering
    Exposure Compensation 0
    ISO Speed 800
    Lens EF70-300mm f/4-5.6 IS USM
    Focal Length 300.0 mm
    Image Size 3888x2592
    Image Quality Fine
    Flash Off
    White Balance Mode Auto
    AF Mode Manual focusing
    Picture Style Standard
    Sharpness 3
    Contrast 0
    Saturation 0
    Color tone 0
    Color Space sRGB
    Noise Reduction Off
    File Size 2502 KB
    Custom Function C.Fn:01-0
    C.Fn:02-0
    C.Fn:03-0
    C.Fn:04-0
    C.Fn:05-0
    C.Fn:06-0
    C.Fn:07-0
    C.Fn:08-0
    C.Fn:09-0
    C.Fn:10-0
    C.Fn:11-0
    Drive Mode Single-frame shooting
    Owner's Name EDITED
    Camera Body No. EDITED
    Last edited by scruff35; 01-03-2007 at 12:08 AM. Reason: Added pic info.

  3. #123
    Joined
    Oct 2001
    Location
    Southern Ontario
    Age
    45
    Posts
    13,194

    Re: To our resident camera buffs...

    Oh yeah, here's the name of that book....

    Philip Harrington and Edward Pascuzzi.Astronomy For All Ages: Discovering the Universe through Activities for Children and Adults, 2nd Edition Guilford, Connecticuit: The Globe Pequot Press, 2000

    ISBN 0-7627-0809-3


    I bought the book at a local book store that had a 50% off sale on all their used books. So the total cost for me was under $5.00.

    The book's alright. There's not a lot on astro-photography. Just three small exercises at the back. One of which was showing the afocal method. I sorta 'discovered' that method back during the big blackout. I was playing with my Canon S40 and my 50mm Newtonian telescope. The first night it was clear skys so I set up my telescope on one tripod, and then set my camera on another. Placed the camera so it could look through the telescope (just like I would normally) and before I knew it, the camera actually focused in on the moon!

    It wasn't until I saw that book that I realized it was actually a real method for astro-photography. There was a picture of a simular set up I did near the back of the book so I bought it to read it later.

    Originally when I took the pictures, I just thought I was only fooling around. In all honesty, it's a hard method to set up, so I was surprised at how well the shot really turned out.

  4. #124
    Joined
    Oct 2001
    Location
    Southern Ontario
    Age
    45
    Posts
    13,194

    Re: To our resident camera buffs...

    I found the original pictures I took that day and uploaded one of them to my server.

    Full Size Image Click Here

    Yes this shot was taken from a 4M Pixel point and shoot!

    I often wanted to set up my S40 + telescope and retake the same image again from the same location but when the city has all it's power. This way I could tell what the effect the city lights would play on the skies. But I never had the chance to set up the telescope and camera on another night when the moon was at the same phase. I lost the camera before then.
    Last edited by Spankin Partier; 01-08-2007 at 08:07 AM.

  5. #125
    Joined
    Aug 2002
    Location
    Yermo, CA, USA
    Age
    59
    Posts
    9,946

    Re: To our resident camera buffs...

    Quote Originally Posted by Spankin Partier View Post
    I found the original pictures I took that day and uploaded one of them to my server.



    Yes this shot was taken from a 4M Pixel point and shoot!

    I often wanted to set up my S40 + telescope and retake the same image again from the same location but when the city has all it's power. This way I could tell what the effect the city lights would play on the skies. But I never had the chance to set up the telescope and camera on another night when the moon was at the same phase. I lost the camera before then.
    Nice pic SP, But for some reason It looks like a green line here, Until I clicked on It.

  6. #126
    Joined
    Oct 2001
    Location
    Southern Ontario
    Age
    45
    Posts
    13,194

    Re: To our resident camera buffs...

    Thanks Joker. Must have something to do with the way the BIMG works with my server. I did a preview using an internal URL to make sure I did the pic correctly, then I switched it to the proper spankinpartier.com URL so everyone else could see it. Don't know what happened though. It should have worked.

    Either way, I know this should now work since I've edited that post.

  7. #127
    Joined
    Aug 2002
    Location
    Yermo, CA, USA
    Age
    59
    Posts
    9,946

    Re: To our resident camera buffs...

    Quote Originally Posted by Spankin Partier View Post
    Thanks Joker. Must have something to do with the way the BIMG works with my server. I did a preview using an internal URL to make sure I did the pic correctly, then I switched it to the proper spankinpartier.com URL so everyone else could see it. Don't know what happened though. It should have worked.

    Either way, I know this should now work since I've edited that post.
    Let Me see, hmmmm. This would normally take some html magic, But I tried that here and It didn't work, I'm hosting It on Photobucket @ 1024x768:

    <a href="http://spankinpartier.com/albums/userpics/10004/133-3325_IMG.JPG"><img width=200 height=150 src="http://spankinpartier.com/albums/userpics/10004/133-3325_IMG.JPG"></A>


  8. #128
    Fluff n Stuff's Avatar
    Fluff n Stuff is offline ♫♪♫♪♪♫♪♫♫♪♫♪♪♫♪♫♪♪
    Joined
    May 2001
    Location
    South Seattle, Wa
    Posts
    12,389

    Re: To our resident camera buffs...

    Quote Originally Posted by Spankin Partier View Post
    I found the original pictures I took that day and uploaded one of them to my server.

    Full Size Image Click Here

    Yes this shot was taken from a 4M Pixel point and shoot!

    I often wanted to set up my S40 + telescope and retake the same image again from the same location but when the city has all it's power. This way I could tell what the effect the city lights would play on the skies. But I never had the chance to set up the telescope and camera on another night when the moon was at the same phase. I lost the camera before then.
    Very nice! It looked a little fuzzy... so a little noise reduction, a little sharpening, a smoodge on the levels... and you get:



    It's clickable for the large version 'nStuff! Sometimes I wonder if I have more fun with the camera or with the computer...



  9. #129
    Joined
    Oct 2001
    Location
    Southern Ontario
    Age
    45
    Posts
    13,194

    Re: To our resident camera buffs...

    OMG!! How on earth were you able to sharpen it up that much!?!?!

    I was looking at using some software that would take multiple images of the same subject and combine them to make a single 'high-res' image that had more detail then any of the individual images had. But I didn't have nearly as much success as you did....and you did that with just one image!

  10. #130
    Fluff n Stuff's Avatar
    Fluff n Stuff is offline ♫♪♫♪♪♫♪♫♫♪♫♪♪♫♪♫♪♪
    Joined
    May 2001
    Location
    South Seattle, Wa
    Posts
    12,389

    Re: To our resident camera buffs...

    Heh... I've had a lot of success through this flowpath:

    Upsample image to 300dpi
    Noise --> Reduce Noise -->(this time) Strength = 0 Reduce color noise 100%
    Sharpen --> Unsharp Mask --> Fiddle (start at 50% Radius 1px, just go for "unblurry", not sharp yet)
    Resize image
    Noise --> Reduce Noise --> Check "Remove Jpeg Artifact"
    Sharpen --> Unsharp Mask --> Fiddle (start at 100% Radius 1px)

    Make sure you have a lot of memory!

    [edit] On this one I also fiddled with the grays:

    Image --> Adjustment --> Shadow/Highlight (fiddle, mostly with Midtone at the bottom)

    All commands off of Photoshop CS2... [/edit]
    Last edited by Fluff n Stuff; 01-08-2007 at 12:45 AM.



  11. #131
    Joined
    Dec 2001
    Location
    Jersey Shore // NYC
    Posts
    1,635

    Re: To our resident camera buffs...

    NICE work, SP and Fluff! I'm impressed.

    So how did you take that with a point-and-shoot with such a small lens/zoom?

    -> Today I'm sending my Sony W100 back for Warranty service, it has a few problems, but when it works it's a great camera. I'll upload a few shot sometime soon ..

    Average Workunit Crunch: 3:41:19.0
    Registered SETI on: December 9 2001
    Join channel #amdmb.com on EFnet on IRC.

    Athlon x2 3800+ SETI-Beast
    DFI LP UT nF4 Ultra D // 2x Hitachi 160gb RAID 0 Array
    1gb Corsair Ram // Asus X800XL Dual-DVI Out Video

  12. #132
    Joined
    Oct 2001
    Location
    Southern Ontario
    Age
    45
    Posts
    13,194

    Re: To our resident camera buffs...

    Real simple. I used the A-focal method. You take a telescope, set it all up. Focus on in on the moon, then set your camera up pointing at the eye piece (just as you do with your eye). Then take the picture.

    Here's a little diagram I found on it:

    Note: The telescope is on the left. To the right is a camera. All standard lenses for both devices are in tact.

    The 'normal' way of doing astro-photography (at least I thought it was the normal way until I read my book) is to remove the telescope's eye piece and remove the lens from the camera. Then attach them both together and take the photo. This is called Prime Focus astro-photography. Here's a diagram of how this works:

    Note: The telescope is on the left and attached to it on the right is the camera. The telescope's eye piece and the camera's lens has been removed and a single adapter (with no optics) is used instead. This will provide a cleaner image if focused and exposed properly, but this requires special components custom to both the telescope and the camera. Also, this does not have the same flexibility as far as magnification, and f-stops.

    Sorry the above diagrams aren't very good. It's the best I could find on google.
    Last edited by Spankin Partier; 01-19-2007 at 08:44 PM.

  13. #133
    Joined
    Oct 2001
    Location
    Southern Ontario
    Age
    45
    Posts
    13,194

    Re: To our resident camera buffs...

    Here's a photo of how the A-focal method is done.


    I didn't do anything so fancy. I simply set my telescope up on it's tripod and then set my camera up on it's tripod and got them to play together.

    The playing together bit was the hard part.

  14. #134
    Fluff n Stuff's Avatar
    Fluff n Stuff is offline ♫♪♫♪♪♫♪♫♫♪♫♪♪♫♪♫♪♪
    Joined
    May 2001
    Location
    South Seattle, Wa
    Posts
    12,389

    Re: To our resident camera buffs...

    I'd try that, but I can only hold my breath for like a minute and a half, tops!



  15. #135
    Joined
    Dec 2001
    Location
    Jersey Shore // NYC
    Posts
    1,635

    Re: To our resident camera buffs...

    That's good - I'm impressed. I've heard of things like that before over at the dpreview.com forums, but your results are really nice.

    When I get home I'm going to give that a shot.

    Average Workunit Crunch: 3:41:19.0
    Registered SETI on: December 9 2001
    Join channel #amdmb.com on EFnet on IRC.

    Athlon x2 3800+ SETI-Beast
    DFI LP UT nF4 Ultra D // 2x Hitachi 160gb RAID 0 Array
    1gb Corsair Ram // Asus X800XL Dual-DVI Out Video

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •