Chris Calohan II
Well-known member

Moonrise: Chris Calohan
Thanks so much fro bringing this simple rule of thumb to our attention. I have done some math and came up wıth a factor of 110 instead of 100 but it is not a significant difference. It also depends on the distance of the moon to earth on a particular place and time. Anyway, if we take 100 as our departing point, this particular image results in a zoom length of around 200-250mm since the moon is roughly 1/15th of the image width. Assuming this was taken with a 35mm sensor, that is. And also assuming that the final image was not cropped. If all holds true, then the prespective I am seeing here is in line with a 200mm lens being used.The perspective in this picture looks strange and maybe wonderful.
To get such a big moon needs a long focal length lens. A working rule is the diameter of the moon's image on the sensor is the lens focal length divided by 100. If the sensor received (say) a 5mm diameter moon image then the lens focal length is a whopping 500mm!
To get so much of the bridge in the picture with a 500mm lens one would have to image the bridge from a long distance away. But then the light standards are all virtually the same distance from the camera and would look the same size anywhere in the frame. But they don't. There's big ones and smaller ones.
I've just read Doug Kerr's post on the strange perspectives offered by telecentric lenses. Is something similar going on here?
The perspective in this picture looks strange and maybe wonderful.
To get such a big moon needs a long focal length lens. A working rule is the diameter of the moon's image on the sensor is the lens focal length divided by 100. If the sensor received (say) a 5mm diameter moon image then the lens focal length is a whopping 500mm!
To get so much of the bridge in the picture with a 500mm lens one would have to image the bridge from a long distance away. But then the light standards are all virtually the same distance from the camera and would look the same size anywhere in the frame. But they don't. There's big ones and smaller ones.
Who said that I didn't enjoy it or didn't look at it Tom? To me, the explanation and enjoyement are not mutually exclusive. Au contraire, I enjoy something even more if I can explain it.See how we all go for explanation instead of enjoyment.
Who gives a ****? Its a picture worth looking at.
See how we all go for explanation instead of enjoyment.
Who gives a ****? Its a picture worth looking at.
Fuck off, Tom.
Doug
Who said that I didn't enjoy it or didn't look at it Tom? To me, the explanation and enjoyement are not mutually exclusive. Au contraire, I enjoy something even more if I can explain it.![]()
Hi Maris,
Thanks so much fro bringing this simple rule of thumb to our attention. I have done some math and came up wıth a factor of 110 instead of 100 but it is not a significant difference. It also depends on the distance of the moon to earth on a particular place and time. Anyway, if we take 100 as our departing point, this particular image results in a zoom length of around 200-250mm since the moon is roughly 1/15th of the image width. Assuming this was taken with a 35mm sensor, that is. And also assuming that the final image was not cropped. If all holds true, then the prespective I am seeing here is in line with a 200mm lens being used.
I blew this up to see if it was a stitch up job and found a few dust bunnies.
Its a great effect, none the less, and a superb backdrop for it. Or is that foredrop? I get the feeling there's an odd man out waiting for his own moon to turn up. He's a bit lonely out there at the edge of the frame. Don't you hate Groupy Lamp Posts.
Awfully brave for a name of a photograph, Chris! Yet you pulled this off. Did you take any more that night?
I do like the repeat of the lampposts with their curve as if they too might hold some invisible moon. The dark under the bridge is a nice balance. I wonder about the cut of lamp. I'd have cheated and repaitired it but that's why it's your picture.
Asher
How did you get that past the filter?
Do you know something I don't?
Fu©k off.... Just trying
You are a naughty boy, Doug. You will copy the sentence "I shall not swear on OPF" eight thousands two hundred and three times.
Been more comments about Fuck off then the photo.![]()
Fuck off
Ahh I get it now.
Well done!Fuck off
Me too... ..
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Moonrise: Chris Calohan