James
If you want useful comments on the 'faults', it would be a good idea not to
crop them!
>From the position and shape of the ghost image, I would say it is the moon,
or a light source out of the top right of the frame.
As to the vertical step along the right edge of the image (which is cropped
off) I note that there is a distinct vertical step in the left side of the
image where essentially you have photographed an illuminated mirror in an
otherwise dark scene. I would place that (the combination of subject and
lighting characteristics) as a strong candidate for causing a flare-like
reflection in your lens. Whether the off-frame light specifically caused it
I can't say without seeing the whole frame.
As to the 'scratch' I think you have the right answer - the intermittent
streak is caused by aircraft navigation lights, while the brighter streak is
the forward-lokking landing light. The orientation of the streak simply
shows that the aircraft was flying fom a position in the lower centre of the
frame towards a point away over your right shoulder. Varying brightness
looks to be because of some low 'cloud' which was lying between you and the
flight level of the aircraft. Remember that in relation to the
surroundings, you are fairly high up, so the aircraft might appear on the
film to be coming from much lower than in reality (and the roof of St
Joseph's accentuates the effect).
Have you any more of the Libeskind building on Holloway Rd?
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of James Royall
Sent: 29 March 2004 23:08
To: olympus@xxxxxxxxxx
Subject: [OM] night time conundrums
--snip
http://homepage.mac.com/royalljames/PhotoAlbum5.html
--snip
It was taken looking fairly near vertically upwards, and if I remember
correctly there was a streetlight not too far out of shot to the right. Lens
was my trusty 35-70.3.6. There is aperture shape flare visible near the
centre of the image, which I would think comes from the moon. Could this
just as easily come from the off picture street light? Also, the bottom
right hand corner lightens considerably. Now, I've cropped away the right
hand edge of the slide, but on the original, moving from left to right, the
blue lightens and then 'steps' back down to a darker shade again, with quite
a hard vertical line between the light and dark shades. Could this be caused
by the off frame street light also?
--snip
The second shot
--snip
I thought the slide was scratched, but it turns out to be a light trail. My
question is, what caused it? First thought is a plane as there are plenty
above London, but why does the brightness vary as it does and not in
relation to the clouds? I've put in a detail from the slide at actual pixel
level before sharpening, which does seem to back up the plane idea - steady
light plus flashing light on wing tip, but I can't figure out why it isn't
steady, and also the angle seems to be dangerously downward. Maybe the path
of the light straight into the nave of the church is a clue?
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