...as an anaglyph (13k)
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The first view
shows the skyline from the Bridge to the middle of the CBD
(6k) ...as an anaglyph (13k) |
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Number two
is actually the same view, but cropped and enlarged to yield two
separate pairs(6k + 6k) |
It occurred to me that a stereo effect could be realised if the baseline between the two images was large enough. Trying the "experimental" approach, I took one shot from Thompson's corner and another (the left) from Pennant Hills, some 2km or so to the north.
Sadly, the separation was excessive and the combined image was not able to be resolved clearly.
When all else fails... read the instructions. A little research yielded the "30:1 rule"; i.e. the baseline separation should be roughly 1/30 the distance to the nearest object. 20km / 30 = 666m. I was able to get separate shots at Thompson's corner roughly 500m apart, and this seems to have worked out satisfactorily.
As a stereo pair, with the correct viewer, the effect is indeed observable and (to me) most satisfactory. It is not a particularly easy pair to resolve - owing partly to its high aspect ratio. (My apologies to devotees of cross-eyed stereographs. I have not included this option as I found it less than satisfactory for this image.)
The unintended vignetting effect on the photos is caused by the 300mm mirror telephoto lens I used.
The most pleasant surprise is the success of the anaglyph version. Without filters, separate channels don't appear to be present. With filters, the image jumps into accurate relief easily. Please try it.
I'm particularly intrigued and gratified by the relationship between the Bridge, Opera House and rightly much-maligned Blue's Point Tower.
Well, I like it. The stereo effect in this pair is "artificial" - to the extent that it cannot be seen with the naked eye (far too distant). The fact that individual buildings can be separated in depth at a range of 20km I find fascinating.
