Foreign Perspectives

Archive for the ‘Science & Technology’ Category

Just when you thought it was finally becoming affordable to get a video camera, they’ve gone and changed the goal posts.

At the moment the cheapest sensible camcorder is coming in around £140 but the cheapest sensible HD model is more like £430 ie getting on for three times the price. Is that extra cost worth it?

One of the main problems that going digital brings is that you just can’t get any more resolution out of the image than you had to begin with. That’s the same with normal film too, of course, but the difference is that normal film has a substantially higher resolution than any digital media you’d realistically be able to afford. The other problem is that display screens are constantly increasing in size. Thus the 13″ screen that was perfectly adequate some years ago has long since been replaced by a 20″ flat screen (equivalent to around 22″ on a non-flat model) and so we can see the limitations of images taken by older technologies.

Bearing in mind that you may well be looking at the images which you record now in, say, 20 years time then the HD devices probably are worth the extra money. You might not notice the difference on the display that you’re using today but chances are that you will notice the difference on the display that you’ll use to view them in even 5 years time.

Now, “all” you have to do is decide whether to go for a miniDV, SD, hard drive or DVD based machine.

That’s actually an easier decision in some ways. The SD card machines are much smaller so if it’s tiny that you want, then that’s the way to go. However, the only technology that doesn’t compress the image is miniDV. Yes, it’s using old-style tapes but if you want the best quality images it’s the one to choose; size-size the machines are about the same as the hard drive and DVD based models.

I’ve been looking at the ASUS range for quite a while now but really couldn’t see the point of getting a baby computer with only at most 20GB storage. Sure, it would have sounded a lot a few years ago but when you start thinking about photos and videos it just doesn’t cut it these days and that’s before you even think about software.

All these little computers are tagged as “netbooks” meaning that they’re intended primarily for use as portable Internet browsers. Certainly for those with 8GB or less “disc” space you’d not get much in the way of applications loaded up but when you’ve 120GB of hard drive to play with what you’ve got is a smaller version of a laptop ie they can do pretty much everything that their bigger brothers can do.

Typically these small computers come loaded with a custom version of Linux although you can also get versions with XP and Vista loaded too (they’re usually £20 or so more expensive). The Linux versions usually come with OpenOffice (the Linux equivalent of Microsoft Office), photo and video display software and, of course, games. In other words, the software that most people use. Note that the Linux software is free you don’t get hit with the extra cost of buying MS Office that you would with the XP or Vista versions.

Out of the box the Aspire One seems like a closed system but it’s easy enough to open things up: just press Alt+F2, type xfce-setting-show and press enter, click on Desktop, then Behavior and finally Show desktop menu on right-click. Now, right-clicking on the desktop will give you the full range of options and in particular going to System, Add/Remove software will give you oodles of choices to extend the functionality of your system.

Incidently, don’t think that going down the Linux route will cut you off from the Microsoft world because there are emulation packages available that’ll let you run pretty much all XP/Vista based software.

There’s a solar eclipse coming up this Friday morning though I’ll not be at this one or at least not at totality basically because the path is crossing a whole bunch of places that are pretty difficult and/or expensive to get to.

At our last one in Turkey in 2006 the plan was for a group of those at that one to organise a trip to see this one in Novosibirsk in Siberia but it proved to be a touch too complex to organise both travel and accommodation to such a relatively isolated spot. The most viable way seemed to be by means of the Trans-Siberian Express but I suspect that the expense of that proved to be a touch high to swing it with the rest of the family for many people.

Still, at least we’ll see a partial eclipse on Friday morning. For most of Europe that’s between about 9.30am to 11am (8.30am to 10am in the UK/Ireland) when you’ll see the sun going dark for the couple of hours as the moon passes across it.

Don’t forget that you can’t look directly at the sun for more than a very short time with your eyes and not at all with binoculars, telescopes or similar. It’s OK to view it via the screen on cameras though but don’t point the camera towards the sun too long or you’ll be needing a new one as it’ll burn out various components with the heat.

You’ll find lots more info on this on NASA’s solar eclipse site.

One thing that constantly surprises me is that there are quite a large number of “professional” website designers around who produce websites that are both very amateur and almost entirely ineffective in terms of findability in the search engines. How do they do this?

First they create a lovely picture to grace the homepage. Why’s that a problem? Well, usually the picture is very large, filling the homepage and there’s, at best, a line of text saying “click to enter”. This causes problems in that it takes ages to download the picture and as far as the search engines are concerned the only searchable text is “click to enter” which is hardly a phrase one is likely to use to find a site.

Second, they produce pages filled with lovely photos, often animated. That’s not a problem if the photos are small enough but usually they put them on full size. One example I looked at this morning had so many photos that it crashed the browser which implies that nobody will be able to look at those pages. They also had only photos ie no text so the page was blank to the search engines.

Finally, they put everything in graphics. This has the effect that the page takes longer than usual to download but more importantly, it’s completely blank to the search engines: in some cases you can’t even find the page by searching for the name of the place.

These designers are professional only in the sense that they charge for their services. Don’t be taken in by them!

The speed of movement in technology is such that many people still see various devices as being distinct with no possibility of transferring content from one to another other than via very limited transfers.

But these transfers aren’t, by and large, limited.

For example, it’s quite easy to record TV programmes onto your computer. From there you could create your own DVD and play that. You can also transform the recorded programme and play it on a range of phones and even MP3 players. The business of playing videos on MP3 players in particular seems to throw people: they’re for music, so how could you play video on them? Yet, even on my 2 year MP3 player I can do that.

The new media players are even more capable. If you get one with an SD card you can store up to about 4 hours of video at pretty good quality and play that directly on the built-in screen or on your TV and you can even record TV programmes directly onto the device.

What’s not so good is moving from low resolution devices upwards. For example, videos recorded on a phone come out very poorly when played through the TV.