husk.org. a website by Paul Mison.

2009-07-02

Walls Come Tumbling Down | For A Beautiful Web

delicious 16:26:22
"It's time to stop showing clients static design visuals" Damn right. All my personal projects have been designed along with the backend code, and they're of variable prettiness, but at least they work. I'm finding the more traditional model much, much harder to deal with these days.

2009-07-01

Experimental: geo "context" | yws-flickr

delicious 17:07:36
'Any talk about the "context" of a photo quickly becomes a hairy problem conceptually and a hairier problem technically. Shouldn't a photo be able to have multiple contexts (outdoors, at night)? How do users add their own contexts? How and why are contexts different than tags or machine tags? Isn't this specific to a photo and not just its geo information? The answer to all those questions is: Yes!'

Olympus Pen E-P1 Followup | Flickr

delicious 10:29:30
I should probably have made this a proper blog post, or fixed comments on husk.org/blog, but: I noted the way cropping works with the Pen (the sensor is 4:3; you can use 3:2 or 16:9, and then JPGs are cropped, while RAW gets embedded cropping metadata). I also found the pictures to be have good saturation and contrast compared to my Canon, but obviously opinions differ.

Quick Olympus E-P1 Hands On | James Duncan Davidson

delicious 10:24:37
JDD on the Pen. "Any lag that people run into in day to day operation will probably be from autofocus acquisition." That's probably true for what I was trying to do (shooting from a cold start) and so setting to manual focus would have fixed it (and in retrospect, it's what I do for the Canon too). Also, "Holding the E-P1 is a lot like holding a rangefinder." I've never used one, but that sounds like it's probably the best comparison point. Worth a read.

2009-06-30

iPhone 3GS and the Bay | James Duncan Davidson

delicious 21:59:05
Lovely photos of San Francisco Bay. It also seemed an appropriate place to comment on the variability of ISO speed that the iPhone has.

spotifyuri | Twitter

delicious 15:40:31
"Replies to you with the name of the track and artist if you quote a spotify uri in a tweet." The use of the @reply prefix means you can follow it and only see the titles of tracks that your friends mention, which is quite handy.

Moorcock, Moore, and Sinclair | Mostly on McSweeney’s!

delicious 10:52:00
Kevin O'Neill's notes from yesterday's talk at the British Library. I should go through mine and see how they compare, but this probably does a better job of capturing the event than I would have anyway. Hurrah.

get_iplayer now Embedded Media Player | Linuxcentre

delicious 10:32:25
A Perl script for downloading from iPlayer now supports video streamed elsewhere on the BBC site. For example, on the Glastonbury pages. (I believe the performances are only up there for a week.)

2009-06-29

Olympus PEN E-P1: A Hands On Review

chaff 15:19:13

Introduction

The big digital photography news this month has undoubtedly been the launch of the Olympus PEN E-P1. If you're not the sort of person who checks sites like DPReview (where the PEN has taken top place in "most popular cameras"), the E-P1 is a rather strange, interesting new camera. Using a system called Micro Four Thirds, it offers interchangable lenses, a relatively large sensor, and by abandoning the mirror and pentaprism of a true SLR in favour of "live view" technology, a compact body. I was lucky enough to have the chance to spend a few hours playing with one over the weekend, and here's what I thought.

There's been a small but vocal section of the photography community wanting a small, well-specified, prime-lensed camera for years. Mike Johnston's classic Decisive Moment Digital post set out what he wanted in a digital camera, and why the traditional compacts and SLRs failed to satisfy. For the last few years, people have tried the Ricoh GR-D cameras, the Panasonic LX-2 and LX-3 (and their Leica rebadgings), Sigma's DP1 and DP2, and all had been found lacking. When Olympus unveiled their prototype last year, people hoped their desires might soon be met.

Front view of the PenSo, how does the E-P1 actually hold up? Sadly, the final design isn't quite as nice as the prototype, but the addition of the grip bulge on the right hand side works well. Physically, it's about half the volume of my Canon 450D (XSi), and about 50% larger than my Fuji F-30 (although the prime lens, as you'd expect, protrudes less). The silver colouring makes it look somewhat consumer-centric; an all-black version would definitely be nice.

Olympus have delivered both "pancake"¹ (17mm f/2.8, 34mm equivalent) and zoom (14-45mm) lenses at launch, with adaptors for both Leica M and full-size Four Thirds mounts (which I didn't get to play with). I'm pleased to see the choice of a wide lens, since the 2x crop factor² means what are standard lenses for film are zoom lenses for the Pen. The UK has bundles with body-only, either kit lens, and finally one with both lenses, although bafflingly, this mixes the colours (what on earth is the thinking there?).

In use

In the hand, the camera is nice and dense; apparently it's made of metal, and certainly feels that way. The one I was using had a neck strap which was quite thin, hung too low, and is apparently a fairly expensive extra; perhaps Olympus have taken the retro thing too far. Of course, as there's no mirror, you compose your image on a screen. The lack of mirror also makes the shutter silent, which is a nice change from an SLR.

The screen was certainly bright enough on a cloudy London evening, but I'm not sure how it would be in direct summer daylight. There is an optional viewfinder, but that's fixed for the 17mm, and I didn't have it during my walkabout. I did try it quickly in Jessops on Thursday, and framing seemed correct, but of course it won't show depth of field or a focussing preview.

Speaking of focussing, it's handled nicely, considering the lack of a direct light path; using the focus ring on the lens causes the live view to flip to a 1:1 pixel view of the centre, which seemed to be perfectly usable when I tried it. Generally autofocus was reliable, but towards the end of the walk (at past 9pm, under cloud) there was a bit of focus seeking with the zoom lens. Speaking of that lens, it has a neat feature, letting it collapse up for storage. I think that both lenses have the same lens cap diameter, but differing filter threads: the prime is 37mm, the zoom 40.5mm.

Naturally, the Pen has an orientation sensor (one of those features that tends to be forgotten by reviewers, but which can be annoying when absent), but it also has a view mode where there are two on-screen level meters, which is handy for architectural shots. In fact, there are a wide range of display overlays, including a grid, a rule of thirds view, a live histogram, and a multiple-shot view. Unfortunately I forgot to take a picture of this in action, but it seemed to work well.

The screen doesn't fold out (something that until recently was confined to compacts, but which has spread to SLRs), but it is visible from fairly wide angles (I held it above my head and was able to make out enough to frame pictures). There's the now-obligatory video mode, which offers HD (at 1280x720, not the larger 1080 size), and it seemed fine, even in lowish light. (I didn't get to take one of my usual "train entering the station" videos, but I did get some on an escalator.)

Speaking of low light, the Pen can be pushed to ISO 6400. I tried this on a couple of shots inside a restaurant (with dim, reddish lighting), and while the grain is very noticeable at full size, scaled for the web (or even full screen), the image is completely usable, with a grain-like quality, if anything. Combined with the relatively wide f/2.8 on the prime lens, I'd say low light performance would be considered good by anyone who's not used to a modern DSLR.

A drawback that's plagued digital cameras since their invention, shutter lag, is unfortunately also a problem for the E-P1. I first noticed this when trying to take video; I'd see a cyclist under the Queen Elizabeth Hall start moving, and click the shutter, but it would take a good second or two to start up, missing the action. I tried a few other times to take still photos while walking and the problem was the same in that mode. Perhaps it was due to focussing time, since it was perfectly fast in continuous shooting, and I could have been asking too much, but I'm sure it's slower than I'm used to from my Canon SLR.

More minor, but perhaps also noteworthy, is the fact the combination of the prime lens's maximum aperture of f/2.8 and the 2x crop factor mean that getting narrow depth of field is a little trickier than it would be at full-frame (or even a 1.6x crop with a f/1.4 lens). Having said that, there's some nice depth of field on this portrait (which I didn't take). One final niggle: the picture review seemed a bit slow to come up. If you don't chimp, you won't care.

To be fair, neither of these were serious issues in most of the shots I was taking, since I usually shoot buildings, details, signs, and other things that don't move, and I suspect a bit more time on my part to think about how to roll with the camera would have made even more difference. Still, they definitely need to be mentioned.

I've posted a set of images and videos, with original size available, on Flickr. I'm not a pixel-peeper, and at web resolution they seem nice; definitely better than I'd expect from the F30, and probably about on a par with the 450D.

Conclusions

I'm very happy to see this camera come to market. There's definitely room for a compact yet professional-quality camera, and this is probably the closest I've seen to being the DMD. Unfortunately, the last few years have seen the prices on digital SLRs built around the mirror/pentaprism drop so far as to squeeze this part of the market; who'll pay £700 for a body and kit lens when you can buy a Sony or Nikon for half that?³ On the other hand, it's a heck of a lot cheaper than digital rangefinders, which it can also claim to compete against.

Hopefully some people will look past the sticker and realise that this is something interesting. Would I recommend it? If you're looking for something pocketable but powerful, don't mind not running with the mainstream, and can justify the expense, then I'd say its unique abilities definitely make it worth serious consideration. That said, I doubt I'll get one myself. Maybe the next version?

The Good:

  • Solid, sturdy feel
  • Picture quality at SLR standard
  • Sane menu structure
  • Low-light performance seemed good (although some focus seeking)
  • Olympus are genuinely trying something new

The Bad:

  • Shutter lag
  • Price - it'll have its work cut out making room in the market
  • Limited choice of lenses (but then, it is just launched)

The Ugly:

  • No black model - choice of white+cream or silver+black
  • The bundling of randomly coloured lenses

Thanks to Ghene Snowdon for fixing it for me to have the chance to play with the camera. (Ghene's pretty active on London Flickr Meetups; it's worth paying attention there, as I know friends who've got to try out cameras there for various reasons before.)

¹ A pancake lens is a very thin prime (ie fixed focal length) lens, named for the fact it's as thin as a pancake.
² The "crop factor" is the ratio between the focal length needed for the sensor and the focal length for 35mm film. This means that, to get the same field of view as a 50mm film SLR lens would provide, the Olympus needs a 25mm lens, while my Canon SLR requires 32mm.
³ Hopefully the next few weeks will see the street price drop a little. Canon's 450D dropped from £650 to £500 over the first three months it was on the market.

2009-06-27

Flickr Photos: Fair Game for Home Printing? | NYTimes.com

delicious 21:35:58
Good article. Worrying comments. (One says 'use favourites'. What when a user takes a favourite private? I haven't forgotten it, but I can't find it. flickr-touch makes a copy for the iPhone. Is it terrible of me that I've dug out pictures from that (private) backup?)

alerts of local ISS passings through twitter | Twisst

delicious 11:20:37
Someone has finally built abovelondon right; twisst sends personalised (based on location) ISS alerts via Twitter DM. It seems to be having teething troubles with API rate limiting, but it's nice to see someone implement this with optimum usefulness.

The Value of Shared Information | NoahBrier.com

delicious 09:31:31
"groups tend to spend most of their time discussing the information shared by members, which is therefore redundant, rather than discussing information known only to one or a minority of members" "people talk about more famous people more because it's a social lubricant to have a shared topic, therefore making the famous more famous" This probably explains why talking about The Terminator works so well as an icebreaker.

Business-networking websites: Insider out | The Economist

delicious 09:26:02
A somewhat interesting leader in the Economist contrasting old-style cliques (Eton, masons) with business-oriented social networks. I'm not quite sure everything they say holds together but it's an interesting area to think about.

2009-06-24

Should Dome Cover Houston? | KPRC Houston

delicious 21:40:51
Today's "idea from science fiction" in the news - cover downtown Houston in a dome to keep the temperature down. (Well, actually, this was posted a couple of weeks ago, not today, but it's the first I've seen of it.)

The Day Facebook Changed Forever | RWW

delicious 21:01:49
"Messages to Become Public By Default" Facebook really are trying to be Twitter, aren't they?

2009-06-22

photogrammetry for mountain images | gipfel

delicious 13:49:18
"With the given viewpoint (the point from which the picture was taken) and two known mountains on the picture, gipfel can compute all parameters needed to compute the positions of other mountains on the picture." "gipfel also has an image stitching mode, which allows to generate panorama images from multiple images that have been referenced with gipfel." Fancy.

2009-06-09

Quick thoughts on iPhone 3GS

chaff 12:35:33

Well, I'm sold.

I've owned an iPod touch for eighteen months. At the time I didn't want to take a punt on the just-released iPhone, but in the intervening time the launch of the 3G hardware made me consider buying one. I'm disorganised, though, and when it got to April I decided to hold off, suspecting the hardware would be refreshed in June.

Of course, it has, and I'll soon be getting in touch with O2 to pre-order My First iPhone. I'm undecided on whether it's worth spending the extra for the 32GB model, but I probably will. The camera improvements (autofocus, slightly higher resolution, and video) are nice; I'm enough of a fanboy to cheer the compass (Google's Sky Map would be lovely), and of course it'll be nice to have a faster device. (Will games throttle their speed on the new hardware, I wonder?)

Existing owners of iPhones are a bit peeved, though. Unlike the last time there was an upgrade, O2 aren't doing anything to let people upgrade early, and operators everywhere seem keen to annoy people who want tethering, either by not offering it or overpricing it. Personally, I'm not that bothered. I know going in there's almost certainly going to be six months in late 2010 when I don't have the latest and greatest, and I dare say I'll cope. (As Matt Jones put it on Twitter, "if you like the shiny, don't be whiny.") A price cut in the UK would have been nice, but I suppose O2 don't feel they need it. Maybe if exclusivity ends?

(I also wonder if the loudest complainers are the same people who are used to upgrading their laptops with every speed bump? That's not a group I've ever been part of; instead, I aim to make my machines last at least their three years of AppleCare. Perhaps the first group are just more vocal, or more used to being able to buy what they want? Of course, iPhones aren't computers, but I assume people think of them as more like computers than phones.)

There is a subset of those vocal complainers who may have a point- developers. The iPhone platform now has devices that run the gamut from the first generation touch, which has no camera, Bluetooth, or support for microphones, to the iPhone 3GS, which has al of the above built in, plus the improvements noted above. The speed range is getting quite large too, and I can understand the desire of devs to get cheaper access to various bits of hardware.

For now, the best bet - outside of large companies - seems to be to find people to test things, but that's hardly the best approach. On the other hand, expecting Apple to duplicate Google's I/O stunt - handing out free phones to every attendee - wasn't likely either. I also wonder if Apple are expecting that developers will just use the emulator?

Still, for all the complaints - largely unjustified, as we all know telcos are like that - this is a perfectly good incremental update. As Steven Levy says, "It's not a game changer." It doesn't need to be, though, and I'm sure it'll do well.

sources

elsewhere

otherwise

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Country

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Blackheath

Cameras

Conversation

Beer

Electricity

Wires

Punchdrunk

Finale

ffffound

Ad for the Zimbabwean printed on worthless bank notes
lufthansa_visualization.jpg
look both ways martin wilson look left look right
denzel and his data