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Archive 2013Canon EOS 7D with EF 400mm f/2.8L IS II break record!
p.2 #1Canon EOS 7D with EF 400mm f/2.8L IS II break record!
uz2work wrote:
..
If the goal was to put as many pixels as possible on every foot of real estate, the choice of the 7D makes sense, but even more pixels could have been put on everything in the scene had a 600/4 or even an 800/5.6 been used.
The 400mm 2.8 was paired with a 2x extender, so this was already at 800mm 5.6. Also going to an even longer focal length also means taking an even larger number of pictures than the 48000 that they took right now, and that also means adding a few more months to the 3 months that the computer took in processing the current pano and so on. I assume this group which has been able to pull off this gigantic effort must have considered all the tradeoffs extensively before heading to do something of this magnitude.
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If the goal was to put as many pixels as possible on every foot of real estate, the choice of the 7D makes sense, but even more pixels could have been put on everything in the scene had a 600/4 or even an 800/5.6 been used.
The 400mm 2.8 was paired with a 2x extender, so this was already at 800mm 5.6. Also going to an even longer focal length also means taking an even larger number of pictures than the 48000 that they took right now, and that also means adding a few more months to the 3 months that the computer took in processing the current pano and so on. I assume this group which has been able to pull off this gigantic effort must have considered all the tradeoffs extensively before heading to do something of this magnitude.
Feb 22, 2013 at 01:53 PM
p.2 #2Canon EOS 7D with EF 400mm f/2.8L IS II break record!
Instead of using 400 f/2.8 + 2xTC combo, I wonder why they didn't use 800 f/5.6 lens and avoid IQ degradation caused by the 2xTC ? 
Feb 22, 2013 at 02:02 PM
p.2 #3Canon EOS 7D with EF 400mm f/2.8L IS II break record!
Awesome. But I have to ask the obvious... why use the 7d?
Why not the FF camera? Or the D800 with megapickels and DR lattitude?
Why not the FF camera? Or the D800 with megapickels and DR lattitude?
Feb 22, 2013 at 02:04 PM
p.2 #4Canon EOS 7D with EF 400mm f/2.8L IS II break record!
And another glitch...
http://btlondon2012.co.uk/pano.html?view.hlookat=-25.2128&view.vlookat=40.9119&view.fov=8.0304&imarkerath=-25.2128&imarkeratv=40.9119
Fascinating stuff...this technology thing is really going to catch on some day.
http://btlondon2012.co.uk/pano.html?view.hlookat=-25.2128&view.vlookat=40.9119&view.fov=8.0304&imarkerath=-25.2128&imarkeratv=40.9119
Fascinating stuff...this technology thing is really going to catch on some day.
Feb 22, 2013 at 02:13 PM
p.2 #5Canon EOS 7D with EF 400mm f/2.8L IS II break record!
mjphoto2013 wrote:
And another glitch...
http://btlondon2012.co.uk/pano.html?view.hlookat=-25.2128&view.vlookat=40.9119&view.fov=8.0304&imarkerath=-25.2128&imarkeratv=40.9119
Fascinating stuff...this technology thing is really going to catch on some day.
Those are just some of the new vehicles Scotland Yard is working on.
And another glitch...
http://btlondon2012.co.uk/pano.html?view.hlookat=-25.2128&view.vlookat=40.9119&view.fov=8.0304&imarkerath=-25.2128&imarkeratv=40.9119
Fascinating stuff...this technology thing is really going to catch on some day.
Those are just some of the new vehicles Scotland Yard is working on.
Feb 22, 2013 at 02:20 PM
p.2 #7Canon EOS 7D with EF 400mm f/2.8L IS II break record!
I surmise that the cropped sensor of the 7D was used because the images accrued the optimal 40% of the lens IQ characteristics. Minimal vignetting, for one. 
And Peter, as a member of the 400II club: what IQ degradation??
Db
And Peter, as a member of the 400II club: what IQ degradation??
Db
Feb 22, 2013 at 02:36 PM
p.2 #9Canon EOS 7D with EF 400mm f/2.8L IS II break record!
Amazing. But , this is another glitch. I hope the link works.
http://btlondon2012.co.uk/pano.html?view.hlookat=-97.0289&view.vlookat=5.6071&view.fov=4.4832&imarkerath=-97.0289&imarkeratv=5.6071
http://btlondon2012.co.uk/pano.html?view.hlookat=-97.0289&view.vlookat=5.6071&view.fov=4.4832&imarkerath=-97.0289&imarkeratv=5.6071
Feb 22, 2013 at 02:44 PM
p.2 #10Canon EOS 7D with EF 400mm f/2.8L IS II break record!
uz2work wrote:
I don't think you can enter from outside the U.K.
I am inside the UK - or I was when I looked out of the window just now...
Donald Gray wrote
I just found a buzby too .. My entry went right through.. Wonder if I was the firstI am inside the UK - or I was when I looked out of the window just now...
Feb 22, 2013 at 02:49 PM
p.2 #12Canon EOS 7D with EF 400mm f/2.8L IS II break record!
Donald Gray wrote:
I don't think you can enter from outside the U.K.I am inside the UK - or I was when I looked out of the window just now...
That was my point because it explains why you were able to enter and others have not been able to do so successfully.
uz2work wrote
Donald Gray wrote
I just found a buzby too .. My entry went right through.. Wonder if I was the firstThat was my point because it explains why you were able to enter and others have not been able to do so successfully.
Feb 22, 2013 at 02:53 PM
p.2 #13Canon EOS 7D with EF 400mm f/2.8L IS II break record!
This kinda technolgy is intruding on people's private lives. 
Edited on Feb 26, 2013 at 06:35 AM · View previous versions
Edited on Feb 26, 2013 at 06:35 AM · View previous versions
Feb 22, 2013 at 03:26 PM
p.2 #14Canon EOS 7D with EF 400mm f/2.8L IS II break record!
Hey Rob. That is a bit of a spoiler. Giving the location away has spoilt it fro all those others enjoying the challenge of looking for it. May I suggest you remove it?
Feb 22, 2013 at 03:35 PM
p.2 #15Canon EOS 7D with EF 400mm f/2.8L IS II break record!
PetKal - At least no one was sitting thereupon, pondering the origin of bellybutton fluff!
Feb 22, 2013 at 03:38 PM
p.2 #17Canon EOS 7D with EF 400mm f/2.8L IS II break record!
M Lucca wrote:
Awesome. But I have to ask the obvious... why use the 7d?
Why not the FF camera? Or the D800 with megapickels and DR lattitude?
Because of the low noise produced by a 7D.
Awesome. But I have to ask the obvious... why use the 7d?
Why not the FF camera? Or the D800 with megapickels and DR lattitude?
Because of the low noise produced by a 7D.
Feb 22, 2013 at 03:43 PM
p.2 #18Canon EOS 7D with EF 400mm f/2.8L IS II break record!
tarnis wrote:
Why use a 400 f2.8 without a teleconverter? I've done these with a 400 f5.6 just fine...you want to really up the anty use a 600mm or 800mm lens, just going with higher megapixel cameras is a cop out.
So do your own 320 gigapixel pano.
Why use a 400 f2.8 without a teleconverter? I've done these with a 400 f5.6 just fine...you want to really up the anty use a 600mm or 800mm lens, just going with higher megapixel cameras is a cop out.
So do your own 320 gigapixel pano.
Feb 22, 2013 at 03:45 PM
p.2 #19Canon EOS 7D with EF 400mm f/2.8L IS II break record!
Looks like an awful waste of space dedicated to the grey dull sky.
Feb 22, 2013 at 03:51 PM
p.2 #20Canon EOS 7D with EF 400mm f/2.8L IS II break record!
PetKal wrote:
Instead of using 400 f/2.8 + 2xTC combo, I wonder why they didn't use 800 f/5.6 lens and avoid IQ degradation caused by the 2xTC ?
What? I thought the 400 f/2.8L II + 2xTC was better than the bare 800mm...
Instead of using 400 f/2.8 + 2xTC combo, I wonder why they didn't use 800 f/5.6 lens and avoid IQ degradation caused by the 2xTC ?
What? I thought the 400 f/2.8L II + 2xTC was better than the bare 800mm...
Feb 22, 2013 at 03:53 PM