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About This Gigapan

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Taken by
The Gigapanographer Currently Known as "Kilgore661" The Gigapanographer Currently Known as "Kilgore661"
Explore score
103
Size
0.76 Gigapixels
Views
1264
Date added
Mar 21, 2010
Date taken
Mar 21, 2010
Gear

Gigapan Pro + Canon 7D + Sigma...

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Description

St. Michael and All Saints' Church, Butcombe at 500mm (840mm 35mm equiv)


Gigapan Comments (5)

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  1. The Gigapanographer Currently Known as "Kilgore661"

    The Gigapanographer Currently Known as "Kilgore661" (March 29, 2010, 04:25AM )

    John, Exposure time: 1/80 Shutter speed: 1/83.00 F-stop: 8.0 ISO speed: 400 Focal length: 500.0000. I shot .jpgs on this day because I only had a small card with me. This was an experiment with higher ISOs. I normally aim to use ISO 100 for gigapans but a friend said that with a 7D I could go for much higher ISOs and still get sharp pixels. I'm not sure I agree - yet. But his shot was taken in fading light at the end of the afternoon so I went for my usual default of f/8, upped the ISO a bit to allow me to drop the shutter speed and this dictated 1/80 for 0EV.

  2. Tom Nelson

    Tom Nelson (March 28, 2010, 03:42PM )

    Hi Kilgore, the G10 (and new G11) shoot in RAW, which gives a wider usable exposure range and easy options for customizing the response curve and removing chromatic aberration. In this pano: gigapan.org/gigapans/45193/ there's about a 2-stop difference between the illumination on the ice and in the top tier of seats. I increased exposure of the darker images in Adobe Camera Raw, though in this low-light instance it increased noise significantly. The smaller point-n-shoot lenses also reach their greatest sharpness at wider apertures than the big lenses. I recently found that f/5.6 gives noticeably sharper photos than f/8, which is the minimum aperture for the G10. The use of wider apertures, less susceptibility to camera shake and greater depth of field give the advantage to the point-n-shoots in creating sharp images.

  3. John De Carteret

    John De Carteret (March 28, 2010, 02:16PM )

    Kilgore, meant to ask, can you remember what the aperture and shutter speed were?

  4. The Gigapanographer Currently Known as "Kilgore661"

    The Gigapanographer Currently Known as "Kilgore661" (March 25, 2010, 12:00AM )

    Hi Tom. At the time of writing I am inclined to agree. I have a friend with a degree in mathematical physics and whose partner is doing a Ph.D, in medical imaging and who is also a photographer. He says gigapanning is unusual in that what we are after is lots of sharp pixels because gigapans are all about zooming in to 1:1 crops. (We are 'pixel peepers' in the terminology of mainstream digital photography.) He also says that what you need for this is a camera with a *small* sensor. This is counter-intuitive to most people. He has tried to explain the reasoning to me a number of times without success. But I have to say that my experience so far does seem to confirm what he says. Indeed, all of my really big gigapans were taken with my trusty Sony DSC H7 - the spec is not quite as good as the G10 iirc. (It's interesting to note that although the H7 is no longer made, it has held its price very well. I recently bought one on eBay and after seven failures I had to pay £200 for one from Canada.) I'd add that another reason for using DSLRs is that they shoot in raw (maybe the G10 does?). This gives you more flexibility in terms of exposure which can be very useful when shooting gigapans - there is often a very wide spread of exposure in an outdoor shot. I am no expert but on a sunny day I'd say the variaton from darkest to lightest is 6EV. Also DSLRs have bigger lenses i.e. ones that let in more light so not only are they useful for low-light work as you point out, but you have more flexibility. Eg on bright day you may want to stop down for depth of field, or decrease the shutter speed to capture movement. Finally, modern DSLRs can produce surprisingly good results at higher ISOs. Perhaps all of the above apply to the G10 in which case everybody should rush out and get one now :-) For me, I will persevere with my 7D and 'Bigma' for a while yet. In particular I want to try it on a scene where everything in the scene is effectively at infinity.

  5. Tom Nelson

    Tom Nelson (March 24, 2010, 09:20AM )

    Hi Kilgore, Your experience with the new telephoto makes me think such lenses are inferior for gigapanning to the super-zoom point-n-shoot cameras. The problems of weight, camera shake and short depth of field make it very hard to get good results with the big cannons. The images that really sing seem to be taken with the P&S super-zooms. I'll also mention my trusty Canon G10 with its auxilliary telephoto. The ONLY place the DSLRs excel is in low-light work. What do you think? Sell your new lens and buy a Canon PowerShot SX10 IS? Tom

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