Posts Made By: Dan Avnet
December 4, 2005 12:49 AM
Forum:
Digital SLR AstroPhotography
December 4, 2005 12:54 AM
Forum:
Digital SLR AstroPhotography
December 4, 2005 12:56 AM
Forum:
Digital SLR AstroPhotography
December 4, 2005 12:58 AM
Forum:
Digital SLR AstroPhotography
December 4, 2005 01:23 AM
Forum:
Digital SLR AstroPhotography
December 4, 2005 01:47 PM
Forum:
Digital SLR AstroPhotography
M42 with 4 inchPosted By Dan Avnet |
Super nice Ivan! Super nice. You're rocking away.
Thanks,
Dan
Thanks,
Dan
December 15, 2005 02:23 PM
Forum:
Digital SLR AstroPhotography
North America with 20DPosted By Dan Avnet |
3D image for sure! I wanted to get my red and green glasses. It looks like a modified Conon20D image. The red response was excellent. Thanks for posting.
Dan
Dan
December 16, 2005 02:04 PM
Forum:
Digital SLR AstroPhotography
5D full frame questionPosted By Dan Avnet |
http://www.dpreview.com/reviews/canoneos5d/
Includes 20D comparison.
Dan
Includes 20D comparison.
Dan
December 17, 2005 04:26 AM
Forum:
Digital SLR AstroPhotography
5D full frame questionPosted By Dan Avnet |
"OK, firstly, when you put a 300mm lens on a D60 you do NOT get a 480mm lens – it is still a 300mm lens. What has changed is the format of the camera – from 36x24mm film to a 22.7x15mm chip."
Also, "The smaller format uses less of the normal projected image circle of a particular lens and thus edge distortions are ‘cropped’ out. See this site's review of the Canon 16-35mm for proof of this."
The Canon L series lenses seem to be required for that 5D especially for astro work. A 20D gets by without the edge aberrations mostly and even using the same L lens the 20D will exhibit less distortion at the edges.
Quotes from: http://luminous-landscape.com/tutorials/understanding-series/dslr-mag.shtml
It's more complicated than we think. Thankfully
By the way, this is one first class photography site. I'm sure you'll be amazed at the info and images as I was.
Dan
Also, "The smaller format uses less of the normal projected image circle of a particular lens and thus edge distortions are ‘cropped’ out. See this site's review of the Canon 16-35mm for proof of this."
The Canon L series lenses seem to be required for that 5D especially for astro work. A 20D gets by without the edge aberrations mostly and even using the same L lens the 20D will exhibit less distortion at the edges.
Quotes from: http://luminous-landscape.com/tutorials/understanding-series/dslr-mag.shtml
It's more complicated than we think. Thankfully
By the way, this is one first class photography site. I'm sure you'll be amazed at the info and images as I was.
Dan
December 22, 2005 01:35 PM
Forum:
Digital SLR AstroPhotography
M31 with AP Traveler and Canon 350DPosted By Dan Avnet |
Hi Rob,
Really outstanding shot! Amazing how great optics overcome a lot of issues
I couldn't notice the light pollution in your area. Have had good results with the IDAS filter too. Love the color and detail. Thanks and keep them coming.
Dan
Really outstanding shot! Amazing how great optics overcome a lot of issues
I couldn't notice the light pollution in your area. Have had good results with the IDAS filter too. Love the color and detail. Thanks and keep them coming.Dan
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