Technology Tales

Adventures in consumer and enterprise technology

TOPIC: CANON EOS 30D

Taking a camera on a walk…

24th July 2007

On Saturday, I happened to be in a branch of Jessops only to overhear 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, so 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...

Field Testing in the Lakeland Fells

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.

First Impressions of the Pentax K10D

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.

Power Management and Response Time

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.

Key Controls and Features

Even if it might sound strange, 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 a screen that is a reminder of film SLR's. This conveys information such as battery life, number of exposures remaining on the card and exposure details (aperture & shutter speed).

Display and Menu System

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 thumb wheel 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 regarding 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.

File Format and Navigation Options

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 options 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.

Exposure Modes and Controls

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 a new 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 paid to these functions.

Shutter priority and aperture priority are, as far as I can tell, their usual selves. For all exposure modes, the thumb wheels at the front and back of the shutter release handgrip set apertures and shutter speeds where appropriate, and this arrangement works well.

Metering Options

The metering mode selector sits on the same column as the exposure dial, offering more options than my Canon, which provides only full and partial multi-segment metering. The Pentax expands these choices to include spot and centre-weighted metering alongside the default multisegmented option.

Spot metering is particularly valuable for precise exposure control, but the implementation requires some dexterity—you must simultaneously half-press the shutter button while fully pressing the AE lock button. This contrasts with Canon's more streamlined approach, where partial metering requires just a single button operation to meter and retain the reading. This is one area where Pentax could certainly improve by adopting Canon's more intuitive design.

Focus Controls

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.

While I could go further, perhaps overboard, with a discussion of the features of this camera, 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.

Performance in the Field

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, yet I am certain 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.

Conclusion

Overall, I'm satisfied with the K10D and plan to continue using it. My recent excursion yielded some quality photographs, which, as the Jessops salesperson would agree, is the ultimate purpose of any camera.

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