Now...are they 100 series or 200 series? (pilots are a bit like that- pedantic to the extreme!)
Observe, everyone, how they both look at the same level! So what hope has the eye of judging it in the air?

I'd say a 200. I'm probably wrong but didn't the 100s only have 3 windows on the upper deck?

It's taken from an old Jane's - 747-200B.

Here's a real photograph of 1,000 feet separation. Cracking picture but one helluva visual case for NAV off-sets. This guy (SIA Capt) has a Gold in air to air photographs. Look at http://www.!!!!!!!!!!!!!!/search and do a Keyword search on Bailey. Brilliant!

EVA Air B747-400 passing 1000 feet below a China Airlines A340 in RVSM Airspace.


http://i21.photobucket.com/albums/b2...as/0637285.jpg

Just goes to show how difficult it is to judge height differences. If I would've had to guess I would have said there's 2000ft between them. The long lens probably makes it deceptive though.

DaiB - do not be put off - many grown PPruners fear the bark of the awoken Rainboe:D

Folks- this is going a bit 'photoshoppish' and I think the original query has been covered, so please continue photosnaps on the appropriate thread.