On Lenses

Barney said:
is that aspect covered in your book Stephen?
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I honestly can't remember. At most, it might have been mentioned, but the section that would contain it was very very abbreviated and I almost certainly wouldn't have gone into any details like why this was so. As a complete non sequitur, some lens corrections for chromatic aberration can give rise to wavy (appropriate really :D ) rather than curved horizons.
 
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Scanning some old negs and came across this shot and the house looks vertical and the bit of horizon on the water is horizontal but the bridge doesn't look right, erm can't read my writing for the 70-210 zoom I was using which could have given distortion. The canal is near to me, but if only I could remember where the shot was taken to go back to look and shoot again.
Forgot to mention:- flash dust magnet seems to help for removing dust as the scanner was covered in it.

img001.jpg
 
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excalibur2 said:
Scanning some old negs and came across this shot and the house looks vertical and the bit of horizon on the water is horizontal but the bridge doesn't look right, erm can't read my writing for the 70-210 zoom I was using which could have given distortion. The canal is near to me, but if only I could remember where the shot was taken to go back to look and shoot again.
Forgot to mention:- flash dust magnet seems to help for removing dust as the scanner was covered in it.

img001.jpg
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The bridge looks fine to me. I suspect it's just the way it's been built, with a slight angle to the side facing the canal.
 
excalibur2 said:
Scanning some old negs and came across this shot and the house looks vertical and the bit of horizon on the water is horizontal but the bridge doesn't look right, erm can't read my writing for the 70-210 zoom I was using which could have given distortion. The canal is near to me, but if only I could remember where the shot was taken to go back to look and shoot again.
Forgot to mention:- flash dust magnet seems to help for removing dust as the scanner was covered in it.

img001.jpg
Click to expand...
The film plane is parallel to the bridge and the house perpendiculars so there should be little perspective distortion, and there does not appear to be in my view. The bridge is built like that.
A lovely shot too.
 
FishyFish said:
The bridge looks fine to me. I suspect it's just the way it's been built, with a slight angle to the side facing the canal.
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What about the dip going downhill on the other side..unless that was angled to the water as well?
 
excalibur2 said:
What about the dip going downhill on the other side..unless that was angled to the water as well?
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More important is the building hiding behind the trees at the top looks correct. It looks like the bridge has been built like that to help with visibility coming out of it.

Ian
 
Nothing wrong with that shot at all. I suspect you are higher than the path on the other side, and that you are looking down on it.
 
Thanks folks for pinpointing the bridge on the map also answers and will have another look at it as it seems I'm the only one who thinks it's erm odd with very few straight lines (esp vertical).
 
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