Tag Archive for review

Battery life

In recent times, I have lugged my Toshiba Equium with me while working away from home; I needed a full screen laptop of my own for attending to various things after work hours so it needs to come with me. It’s not the most portable of things with its weight and the lack of battery life. Now that I think of it, I reckon that it’s more of a desktop PC replacement machine than a mobile workhorse. After all, it only lasts an hour on its own battery away from a power socket. Virgin Trains’ tightness with such things on their Pendolinos is another matter…

Unless my BlackBerry is discounted, battery life seems to be something with which I haven’t had much luck because my Asus Eee PC isn’t too brilliant either. Without decent power management, two hours seems to be as good as I get from its battery. However, three to four hours become possible with better power management software on board. That makes the netbook even more usable though there are others out there offering longer battery life. Still, I am not tempted by these because the gadget works well enough for me that I don’t need to wonder about how money I am spending on building a mobile computing collection.

While I am not keen on spending too much cash or having a collection of computers, the battery life situation with my Toshiba is more than giving me pause for thought. The figures quoted for MacBooks had me looking at them though they aren’t at all cheap. Curiosity about the world of the Mac may make them attractive to me but the prices forestalled that and the concept was left on the shelf.

Recently, PC Pro ran a remarkably well-timed review of laptops offering long battery life (in issue 205). The minimum lifetime in this collection was over five hours so the list of reviewed devices is an interesting one for me. In fact, it even may become a shortlist should I decide to spend money on buying a more portable laptop than the Toshiba that I already have. The seventeen hour battery life for a Sony VAIO SB series sounds intriguing even if you need to buy an accessory to gain this. That it does over seven hours without the extra battery slice makes it more than attractive anyway. The review was food for thought and should come in handy if I decide that money needs spending.

A bigger screen?

A recent bit of thinking has caused me to cast my mind back over all the screens that have sat in front of me while working with computers over the years. Well, things have come a long way from the spare television that I used with a Commodore 64 that I occasionally got to exploring the thing. Needless to say, a variety of dedicated CRT screens ensued as I started to make use of Apple and IBM compatible PC’s provided in computing labs and other such places before I bought an example of the latter as my first ever PC of my own. That sported a 15″ display that stood out a little in times when 14″ ones were mainstream but a 17″ Iiyama followed it when its operational quality deteriorated. That Iiyama came south with me from Edinburgh as I moved to where the work was and offered sterling service before it too started to succumb to aging.

During the time that the Iiyama CRT screen was my mainstay at home, there were changes afoot in the world of computer displays. A weighty 21″ Philips screen was what greeted me on a first day at work but 21″ Eizo LCD displays were set to replace those behemoths and remain in use as if to prove the longevity of LCD panels and the validity of using what had been sufficient for laptops for a decade or so. In fact, the same comment regarding reliability applies to the screen that now is what I use at home, a 17″ Iiyama LCD panel (yes, I stuck with the same brand when I changed technologies longer ago than I like to remember).

However, that hasn’t stopped me wondering about my display needs and it’s screen size that is making me think rather than the reliability of the current panel. That is a reflection on how my home computing needs have changed over time and they show how my non-computing interests have evolved too. Photography is but one of these and the move the digital capture has brought with a greater deal of image processing, so much that I wonder if I need to make less photos rather than bringing home so many that it can be hard to pick out the ones that are deserving of a wider viewing. That is but one area where a bigger screen would help but there is another and it arises from my interest in exploring countryside on foot or on my bike: digital mapping. When planning outings, it would be nice to have a wider field of view to be able to see more at a larger scale.

None of the above is a showstopper that would be the case if the screen itself was unreliable so I am going to take my time on this one. The prospect of sharing desktops across two screens is another idea but that needs some thought about where it all would fit; the room that I have set aside for working at my computer isn’t the largest but it’ll need to do. After the space side of things, then there’s the matter of setting up the hardware. Quite how a dual display is going to work with a KVM setup is something to explore as is the adding of extra video cards to existing machines. After the hardware fiddling, the software side of things is not a concern that I have because of when I used laptop as my main machine for a while last year. That confirmed that Windows (Vista but it has been possible since 2000 anyway…) and Ubuntu (other modern Linux distributions should work too…) can cope with desktop sharing out of the box.

Apart from the nice thoughts of having more desktop space, the other tempting side to all of this is what you can get for not much outlay. It isn’t impossible to get a 22″ display for less than £200 and the prices for 24″ ones are tempting too. That’s a far cry from paying next to £300 (if my memory serves me correctly) for that 17″ Iiyama and I’d hope that the quality is as good as ever.

It’s all very well talking about pricing but you need to sit down and choose a make and model when you get to deciding on a purchase. There is plenty of choice so that would take a while but magazine reviews will come in handy here. Saying that, last year’s computing misadventures have me questioning the sense of going for what a magazine places on its A-list. They also have me minded to go to a nearby computer shop to make a purchase rather than choosing a supplier on the web; it is easier to take back a faulty unit if you don’t have far to go. Speaking of faulty units, last year has left me contemplating waiting until the year is older before making any acquisitions of computer kit. All of that has put the idea of buying a new screen on the low priority list, nice to have but not essential. For now, that is where it stays but you never know what the attractions of a shiny new thing can do…

Rough?

Was it because Canonical and friends kept Ubuntu in such a decent state from 8.04 through to 9.04 that things went a little quiet in the blogosphere on the subject of the well-known Linux distribution? If so, 9.10 might be proving more of a talking point and you have to wonder if this is such a good thing with the appearance of Windows 7 on the scene. Looking on the bright side, 10.04 will be an LTS release so there is some chance that any rough edges that are on display now could be resolved by next April. Even so, it might have been better not to see anything so obvious at all.

In truth, Ubuntu always has had its gaps and I have seen a few of their ilk over the last two years. Of these, a few have triggered postings on here. In fact, issues with accessing the BBC iPlayer still bring a goodly number of folk to this website. That may just be a matter of grabbing RealPlayer, now helpfully available as a DEB package, from the requisite place on the web and ensuring that Ubuntu-Restricted-Extras is in place too but you have to know that in the first place. Even so, unexpected behaviours like Palimpsest seeing every partition on a disk as a different drive and SIL Raid mappings being seen for hard drives that used to live on the main home PC that bit the dust earlier this year; it only happens on one of the machines that I have running Ubuntu so it may be hardware thing and newly added hard drive uses none of the SIL mapping either. Perhaps more seriously (is it something that a new user should be encountering?), a misfiring variant of Brasero had me moving to K3b. Then UFRaw was sluggish in batch but that’s nothing that having a Debian VM won’t overcome. Rough edges like these do get you asking if 9.10 was ready for the big time while making you reluctant to recommend it to mainstream users like my brother.

The counterpoint to the above is that 9.10 includes a host of under the bonnet changes like the introduction of Ext4 hard drive formatting, Xsplash to allow the faster system loading to occur unseen and GNOME 2.28. To someone looking in from outside like me, that looks like a lot of work and might explain the ingress of the annoyances that I have seen. Add to that the fact that we are between Debian releases so things like the optimised packaging of ImageMagick or UFRaw may not be so high up the list of the things to do, especially with the more general speed optimisations that were put in place for 9.10. With 10.04 set to be an LTS release so I’d be hoping that consolidation is the order of the day over the next five or six months but it seems to be the inclusion of new features and other such progress that get magazine reviewers giving higher ratings (Linux Format has given it a mark of 9 out of 10). With the mooted inclusion of GNOME 3 and its dramatically different interface in 10.10, they should get their fill of that. However, I’d like to see some restraint for the take of a smooth transition from the familiar GNOME 2.x to the new. If GNOME 3 stays very like its alpha builds, then the question as how users will take to it arises. Of course, there’s some time yet before we see GNOME 3 and, having seen how the Ubuntu developers transformed GNOME 2.28, I wouldn’t be surprised if the impact of any change could be dulled.

In summary, my few weeks with Ubuntu 9.10 as my main OS have thrown up no major roadblocks that would cause me to look at moving elsewhere; Fedora would be tempting if that situation were to arise. The irritations that I have seen are more like signs of a lack of polish and remain peripheral to day-to-day working if you discount CD/DVD burning. To be honest, there always have been roughnesses in Ubuntu but has the lack of sizeable change spoilt us? Whatever about how things feel afterwards, big changes can mean new problems to resolve and inspire blog posts describing any solutions so it’s not all bad. If that’s what Canonical wants to see, they might get it and the year ahead looks as if it is going to be an interesting one after a recent quieter period.

Taking a camera on a walk…

On Saturday, I happened to be in Jessops and overheard a salesman emphatically state that you don’t buy a camera for its specifications but for the photos that it produces. While his tone of voice was a touch condescending and he seemed to be putting down a DSLR, he was essentially right. Nevertheless, the specifications do help you get the images and they have to be seen in that light. For instance, having on-board sensor cleaning may save you from having either to clean the thing yourself or send the camera away for the professionals to do the needful, a much safer option in my view. And there may be occasions where image stabilisation is very useful, low light wildlife photography for instance. Yes, there are features that I consider surplus to requirements like live viewing and movie capture and that is very much due to my buying cameras to make photos. The salesman in question would surely have agreed…

Sunday saw me head to the Lakeland Fells for some walking and a spot of testing of my new Pentax K10D. The details of the walk itself are not for here but for my hillwalking blog and that is where you will find them. While making my way from Crewe to Windermere, I perused the manual looking particularly for information pertaining to functions that I actually use (I should really have done this beforehand but distractions meant that I hadn’t got around to it). I had to wade through something designed for a new SLR user before I got to what I consider the important stuff. Though this may be a bit irritating, I can understand and accept why they do it this way; we were all new users once and they are hardly likely to want to know about things like aperture priority, raw file capture, ISO control and such like straight away.

What do I think of it then? Let’s start with first impressions. It is definitely smaller than the Canon EOS 10D it accompanies in my possession. That said, it is not too small and there is a decent grip hosting the shutter release button and the camera on/off switch. It also feels well-assembled and reassuringly weighty, an important consideration given that it will see the outdoors a lot. A discussion of the features most relevant to me follows.

On the subject of switching on and off, the camera is set to go into a sleep mode after a second of inactivity but it reawakens quickly when needed, the trigger being half-depression of the shutter release button. In fact, the camera does reawaken much faster than my Canon as it happens and where the delay is a constant source of some irritation. It might sound strange but the on/off switch is also used to activate the depth of field preview, something that no SLR should not have. The location may be unusual but maybe the designers thought that having shutter release and depth of field preview next to each was a logical way to do it. From a camera operation point of view, there is certainly something to that way of thinking. Behind the shutter release, you’ll find the a screen that is a reminder of film SLR’s and it conveys information such as battery life, number of exposures remaining on the card and exposure details (aperture & shutter speed).

Staying on the subject of screens, the one on the back of the camera is larger than that on the Canon. As is customary for these, it allows replay of photos taken and access to the various menus required to control the camera’s operation. In comparison to the Canon, which is essentially a one menu affair with a thumbwheel controlling scrolling and an OK button at its centre to perform operations, the Pentax has a more elaborate system of submenus: one each for recording, playback and set-up. The playback menu is where I found the setting that makes the camera highlight areas of underexposure and overexposure during image playback. This is something that I missed with respect to the Canon until I happened upon it. Camera cleaning is located on the set-up menu and the camera is now set to clean the sensor every time that it is turned on. Why this is not enabled by default is a little beyond me but the designers might have thought that a vibration from the camera on turning it on could have resulted in a load of support calls. The same submenu also hosts memory card formatting. The recording submenu is where I set the camera to deliver RAW DNG files, an Adobe innovation, rather than the default JPEG’s. There are other opitons like RAW PEF files, Pentax’s own format, or RAW and JPEG simultaneously but my choice reflects my workflow in Photoshop Elements; I have yet to stop the said software editing the DNG files, however. With all these options, it is fortunate that there is a navigation wheel whose operation uses arrow buttons to get about. While on the subject of the back screen, there are further settings that are accessed with the Fn button rather than the Menu one. These include ISO, white balance, shooting mode (single, continuous, timed and so on) and flash. The only setting that I changed out of this lot was to set the ISO to 400; I prefer to feel that I am in control.

Returning to the camera’s top plate, the exposure mode dial is on the left hand side, which is no hardship to me as this is in the same place as on the Canon. There are no scene modes but the available exposure modes are more than sufficient: fully automatic, program, sensitivity priority, shutter priority, aperture priority, shutter and aperture priority, manual, bulb and external flash synchronisation. A few of these need a spot of explaining. Sensitivity priority is no one on me but it is a consequence of the ability of DSLR’s to offer a range of ISO settings; the aperture and the shutter speed are varied according to the ISO setting. Shutter and aperture priority is like manual exposure and is the inverse of sensitivity priority: set both aperture and shutter speed, and the camera will vary the ISO setting. Both of the foregoing assume that you let the camera set the ISO but my setting the thing myself may have put put paid to these functions. Shutter priority and aperture priority are, as far as I can tell, their usual selves. For all exposure modes, the thumbwheels at the front and back of the shutter release handgrip set apertures and shutter speeds where appropriate and this arrangement works well.

Mounting on the same column as the exposure dial the metering mode selector and here is where I see more options than my Canon, which has only full and partial multi-segment metering. With the Pentax, you get spot and centre-weighted metering in addition to the default multi-segmented variety. spot metering is definitely very useful but capturing the reading is a multitasking affair: half pressing the shutter button and fulling pressing the AE lock one at the same time. In contrast, Canon’s partial metering is a more convenient single button operation meter and retain facility. Pentax would do well to learn from this.

The focussing mode selector is found on the left of the body next to the lens coupling. I am used to having this on the lenses themselves so this is a new arrangement for me and one to which I can easily become accustomed. In fact, it is easy to find it while composing a picture. The modes themselves are manual focus, one-time autofocus and continuous autofocus; the last of these is for focussing on moving objects.

I could go further, perhaps overboard, with a discussion of the features of this camera but I draw a line at what’s here. Yes, it is useful to set the focussing point and activate image stabilisation but the above are what matter to me and its performance in the photo making department is the most important aspect. That neatly brings me to my appraisal of how it performs. With inspection of the first few images on the review screen, I was a little disappointed to see how dark the foreground was in comparison to the sky. When I brought everything home as I always do, I found that things weren’t necessarily as they appeared in the field. The Pentax more usefully offers histogram review and highlighting of any areas that are either underexposed or overexposed. It is these functions that I will be using in reshooting decisions while out and about with the Pentax and the same can be said for how I currently use the Canon. In fast changing lighting, the AE lock technique was a bit irritating but I am sure that I will get better at it. The autofocus doesn’t always lock onto the subject, especially in tricky lighting, so manual focussing is a definite necessity and is more useful more for landscape photography, in fact. Nevertheless, the autofocus did do well most of the time and my Sigma lenses have done worse things on me. All in all, I am happy with the K10D and will continue to use it. I have got some decent photos from my excursion and that, as that Jessops salesman would agree, is the main point of a camera.

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