Thursday, 29 July 2010
Tuesday, 13 July 2010
Sometimes I wonder...
..why I bother with the cost and hassle of the DSLR.
(One image taken with the Nikon D300, plus Sigma zoom. The other with my Fuji F70 point-and-shoot. Both at "300mm" (although not strictly comparable due to sensor sizes). I'll leave you to work out which is which.)
Actually, I do know why I bother. The F70 image has had to be cropped heavily and then resampled, while the D300 image hasn't (although there is some cheating...it's actually a stacked composite of two images to get the wings and body in focus, while keeping the shallow depth of field for the background).
No control over depth of field on the compact - colour rendition also pretty hit and miss.
This was in bright, afternoon sun which allowed shooting at 200 ISO - anything above 400 ISO starts to lose masses of detail with the NR smearing on the F70.
Slooooow. Fuji one of fastest compacts I've used, but still enough shutter lag and blackout to mean anything moving is a hit and miss affair.
(One image taken with the Nikon D300, plus Sigma zoom. The other with my Fuji F70 point-and-shoot. Both at "300mm" (although not strictly comparable due to sensor sizes). I'll leave you to work out which is which.)
Actually, I do know why I bother. The F70 image has had to be cropped heavily and then resampled, while the D300 image hasn't (although there is some cheating...it's actually a stacked composite of two images to get the wings and body in focus, while keeping the shallow depth of field for the background).
No control over depth of field on the compact - colour rendition also pretty hit and miss.
This was in bright, afternoon sun which allowed shooting at 200 ISO - anything above 400 ISO starts to lose masses of detail with the NR smearing on the F70.
Slooooow. Fuji one of fastest compacts I've used, but still enough shutter lag and blackout to mean anything moving is a hit and miss affair.
Friday, 18 June 2010
Macro madness
Didn't want to overload Facebook with photo-nerdery - but here are a couple more in the "Tom stands in the garden with his zoom out" series.
As I said, used the Sigma 70-300@300 and in macro mode.
I've got a bank of settings designed for "sport" which is set up to use a limited auto-ISO mode (200-800), upping the ISO to keep the shutter speed above 1/200s.
Initially I tried using the autofocus, but the Sigma is just too slow and with a busy background and small subject, was ending up locking onto background objects too often. Had more success switching to manual focus - or towards the end, manually getting the focus plane pretty close to where it needed to be, then flicking to auto (continuous) to let it make the last adjustment and continue to adjust if I fired off multiple shots.
Looking back at the shots, both full manual and manual/auto focus approaches had about as many hits as misses.
As you'll see from the bigger sizes, even the "hits" are pretty soft, which shows up a) the lens and b) the difficulty with trying to get things in motion with a razor thin plane of focus! Light levels let me go up to f8, but even this, as you'll see, doesn't give any depth of field at all.
I've also had to crop in the finish photos from the wider shots (the 300 macro doesn't get that close), which hasn't helped quality.
General learning from the process:
Hoverflies are good - they tend to hang around the same bushes for several minutes at a time, there are lots of them and they stop and hover - as the name suggests!
Patience - like most photography it's more about the willingness to stand around and take 200 photos, then any particular talent!
Use both eyes - because the Sigmas macro mode locks you into 200-300mm, was having to find where flies were with eye away from the finder, then try to locate them in the finder while zoomed, which proved difficult at first, but with a bit of practice and keeping both eyes open you begin to get the knack of "seeing" the wide scene with one eye, the zoomed image with the other and somehow navigating your way round both to get the insect into the middle of the frame!
Insect backsides are fairly boring - and they're not very helpful and keep moving around, so I had to rotate around them quite a lot to get the more interesting views. Hoverflies again nice subjects as they didn't seem that bothered with me standing very close.
As I said, used the Sigma 70-300@300 and in macro mode.
I've got a bank of settings designed for "sport" which is set up to use a limited auto-ISO mode (200-800), upping the ISO to keep the shutter speed above 1/200s.
Initially I tried using the autofocus, but the Sigma is just too slow and with a busy background and small subject, was ending up locking onto background objects too often. Had more success switching to manual focus - or towards the end, manually getting the focus plane pretty close to where it needed to be, then flicking to auto (continuous) to let it make the last adjustment and continue to adjust if I fired off multiple shots.
Looking back at the shots, both full manual and manual/auto focus approaches had about as many hits as misses.
As you'll see from the bigger sizes, even the "hits" are pretty soft, which shows up a) the lens and b) the difficulty with trying to get things in motion with a razor thin plane of focus! Light levels let me go up to f8, but even this, as you'll see, doesn't give any depth of field at all.
I've also had to crop in the finish photos from the wider shots (the 300 macro doesn't get that close), which hasn't helped quality.
General learning from the process:
Hoverflies are good - they tend to hang around the same bushes for several minutes at a time, there are lots of them and they stop and hover - as the name suggests!
Patience - like most photography it's more about the willingness to stand around and take 200 photos, then any particular talent!
Use both eyes - because the Sigmas macro mode locks you into 200-300mm, was having to find where flies were with eye away from the finder, then try to locate them in the finder while zoomed, which proved difficult at first, but with a bit of practice and keeping both eyes open you begin to get the knack of "seeing" the wide scene with one eye, the zoomed image with the other and somehow navigating your way round both to get the insect into the middle of the frame!
Insect backsides are fairly boring - and they're not very helpful and keep moving around, so I had to rotate around them quite a lot to get the more interesting views. Hoverflies again nice subjects as they didn't seem that bothered with me standing very close.
Monday, 14 June 2010
A bit quiet around here....
Have we all given up?
Here's a picture of a pine cone on a wall. Took it for some homework of Imogen's but decided I quite liked it.
Thursday, 1 April 2010
Not likely to happen to me...
See this article. I know it's in the Daily Mail (and I feel dirty for linking to it) but the other news reports didn't have the photos.
Wednesday, 31 March 2010
Tuesday, 16 March 2010
Want one!
Ok, so I'm definitely not looking for something to buy, and even if I were, I would not have thought that this would have been on my list of potential acquisitions.
However, my mind has been playing games with me, and, you know, I am really quite taken with the idea of doing massive panoramic photographs with multi-gigabit resolution.
This thingy:
http://gigapansystems.com/gigapan-epic-pro.html
It's too expensive, too cumbersome, too fiddly, the files are too large, it's just completely impractical.
But I want one. I really do. Too be filed in the draw marked "Dreams of Tilt and Shift Lenses and other Curios".
However, my mind has been playing games with me, and, you know, I am really quite taken with the idea of doing massive panoramic photographs with multi-gigabit resolution.
This thingy:
http://gigapansystems.com/gigapan-epic-pro.html
It's too expensive, too cumbersome, too fiddly, the files are too large, it's just completely impractical.
But I want one. I really do. Too be filed in the draw marked "Dreams of Tilt and Shift Lenses and other Curios".
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