Category Archives: Equipment

My Backpacking Photography Kit (9/20/06 Update)

The article that was found at this address is now quite dated! Please see my more current article describing my photographic equipment for backpacking.

Pentax K10D dSLR Announced

The announcement of this new Pentax dSLR is all over the web, but here is one link:

The 10 megapixel Pentax K10D digital SLR camera. Pentax invites you for test drive with their latest digital SLR camera, the K10D. The new SLR features 10.2 megapixels and a host of advanced technologies including Shake Reduction and a weather-resistant body. The K10D body will ship by November 2006 for $899, and as a kit with the DA 18-55mm lens for $999. A new smc Pentax-DA 70mm F2.4 Limited lens, designed for exclusive use with Pentax digital SLR cameras will ship in October 2006 for less than $600… [DCVIEWS Digital camera and photography news]

George Barr has also posted a brief but dead-on note (Pentax K10D – Awesome Specs) about the camera at Behind the Lens:

These are really practical features to add – not frills like you see on some cameras – impressive looking but not really useful – who wouldn’t love a sensor that was easy to clean, image stabilization without buying it in every single lens, or forking out big bucks for a robust camera that can take the beach, stream, snow storm or rain.

The Online Photographer also offers a summary: Little Giant-Killer.

Judging from the specifications and features, this camera could well be a credible competitor to offerings from Canon, Nikon and, more recently, Sony. With a price in the same range as the excellent Canon 400D, this Pentax camera offers a number of appealing and useful features, notably including weather sealing – a feature not available from Canon except on their extremely expensive 1-Series cameras.

Although few lenses have been announced, the body apparently is backwards compatible with the large base of existing Pentax lenses, many of which are notable for high quality and excellent design. (By the way, the new Pentax-DA 70mm F2.4 Limited lens announced along with the camera looks like an example of Pentax’ innovative thinking about camera optics.) Many years ago my two favorite backpacking cameras were a Pentax ME and a Pentax MX, used with excellent 100mm f/2.8, 50mm f/1.4, and 45mm (?) f/2.8 lenses. I’d love to see that glass put to use on a quality digital body.

In any case, it is great to see more viable competition emerging in the digital SLR marketplace, where Canon has reigned supreme recently. I have nothing at all against Canon – I use Canon gear exclusively and like it a lot – but additional competition can only be good for photographers.
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Why I Chose a Canon Digital Rebel XT (350D)

I follow and occasionally comment on discussions at a few photography sites. I frequently see questions from people trying to decide whether the Canon 350 XT (a.k.a. the “Digital Rebel” and the 350D) is good enough for them, and I have posted replies more than once. After retyping the same answer quite a few times, I thought I’d post a summary here and just link to it from here on.

I purchased my 350 XT in March of 2005. After poring over the specifications of competing cameras I had narrowed my choice to either the Canon 20D or the 350 XT. Cost was not the main issue, though I’m happy to save money if I can do so and still get the quality and features I want. Here are some of the factors that influenced my decision to purchase the 350 XT. (Note: What I write about the 20D will apply for the most part to the 30D as well.)

  • Image qualityis indistinguishable from that of the 20D. The sensors on the two cameras are essentially the same. (To be accurate, the 350 XT does use slightly fewer pixels – equivalent to losing a couple of rows of pixels around the very edge and completely inconsequential.)
  • Size and weightof the 350 XT are more appropriate for the kind of photography that I do most often – hiking, backpacking, and otherwise doing photography on foot. The 350 XT weighs about a half pound less than the 20D and is noticably smaller. Some people say that the smaller body of the 350 XT is a disadvantage and claim to find it uncomfortable. I have relatively large hands and, frankly, I don’t even think about the camera being too small when I use it – this is a non-issue for me.
  • Build qualityis fine. The 350 XT does make greater use of plastic but that is not necessarily a bad thing. Plastic scratches; metal bends. Plastic is not automatically a sign of shoddy construction, and plastic is often the most appropriate material. In any case, I use my camera in relatively demanding situations – crammed in a pack while backpacking, for example – and I haven’t had any problems related to the build quality of the camera.
  • The interface is finefor me and the type of shooting I do. One could argue that the 20D has a more flexible interface, but I find the 350 XT to be pretty flexible, too, now that I have thoroughly learned the camera. (I do wish that Canon would put a mirror lock-up button on their cameras!)
  • Burst modeis capable enough for me. I don’t use this feature that much, but it is sufficiently powerful for me most of the time when I do. (Here is an example.) I will admit that those who rely on this feature a lot might prefer the 20D or, better yet, the 30D. The 350 XT burst speed is generally fast enough for me, but I can quickly fill the buffer shooting RAW images, and I sometimes have to wait for it to clear.
  • The cost differencebetween the 350 XT and the arguably somewhat better 20D (and 30D) is too great to be worth it for me. As I write this (May 2006) the price of the 350 XT body is about half that of the 20D, but the 20D is not “twice as good” for the kind of photography I do.
  • Investing money in lensesmakes more sense than investing it in dSLR bodies. I believe that most serious photographers will want to replace current dSLR bodies on about an 24 month cycle, given the rapid rate of improvements in these products. (Another way to look at it: other factors aside, it is worth upgrading when the number of pixels doubles at a reasonable price point.) All of this is a long way of saying that I regard this camera body as a short-term investment. On the other hand, I expect to keep my high quality lenses for many years and transfer them to better bodies as they become available. The price differential between the 350 XT and the 20D/30D is great enough to by an excellent prime (such as the Canon EF 50mm f/1.4) or even one of the less-expensive Canon “L” zooms (such as the Canon EF 17-40mm f/4 L or the Canon EF 70-200mm f/4 L).

So, there you have it. When I purchased the 350 XT I was fairly confident I was making the right choice, though I couldn’t be sure until I used it. A year and a few months later I am even more convinced that this was the right choice, and I’m still pleased with this camera.

By the way, all of the photography on this site (as of this writing in July 2006) was done with my 350 XT, so take a look – there a plenty of examples here of what you can do with this camera. You can find links to specific photo categories in the sidebar, or start at the home page.

(All of this does not mean that I’m not already thinking about the camera that will replace my 350 XT though. I haven’t made any decisions yet, but I lean toward making my next purchase when a relatively light (5D size) Canon 16-megapixel body with a full-frame sensor becomes available at a price I can afford.)


Update – Nov. 9, 2006: The 350D is still going strong. Canon has recently introduced the 400D (or RebelXTi), a 10 MP upgraded version of the 350D/RebelXT that also has some new dust-removal features. If I were purchasing a crop sensor Canon DSLR body today I would almost certainly get this new model. Although the difference between 8MP and 10MP is not as big as it might seem, it is a bit of an advantage, and reports are that Canon has pulled it off without adding noise or otherwise reducing image quality. In many other ways, what I have written above concerning the 350D should also apply to the 400D/XTi.

Update – April 23, 2008: Camera models continue to evolve quickly and now Canon has updated the Rebel series (now know as “Rebels” rather than “Digital Rebels”) with the newest model being the XSi, a 12 MP crop sensor body that carries on the design philosophy of the earlier Digital Rebels but adds significantly enhanced features. While the technical details of the 350D/XT described above are quite different than those of the newer model, much of what I wrote relative to a comparison of the Rebel series to the X0D series is still relevant. (At the time of this writing, the 350D/XT is still available, often at some very low prices. If you are budget constrained it is still a camera worthy of your consideration.)

Update – July 28, 2008: It appears that new 350D/XT cameras are no longer readily available from a number of the popular online sources – though you still may be able to find a few on sale, and they are still available used.

G Dan Mitchell Photography
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Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

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Canon EF 24-105mm f/4 IS L Lens

(Updated December 28, 2011.)

I have owned the Canon EF 24-105mm f/4 IS L lens since 2006. I originally picked this lens for several reasons:

  • On my full-frame cameras,  this lens covers a very useful range from fairly wide to slightly long, making it a very flexible and versatile lens.
  • The lens is quite sharp and has good contrast throughout its focal length range.
  • For its focal length range the lens is relatively compact. This is important to me since I frequently hike or backpack with photo gear.
  • The f/4 maximum aperture is generally sufficient for the kinds of photography I do.
  • The image stabilization (IS) feature is helpful for handheld photography and somewhat compensates for the f/4 maximum aperture.

Like most lenses, this one has a “personality” that gives it particular strengths and weaknesses relative to the individual photographer’s work and working methods. My extensive experience with the lens convinces me of the following:

  • Resolution is very good when the lens is used with care. Sharpness is excellent throughout the focal length range, being best in the middle portion as expected. Sharpness can diminish a bit at the long end compared to, say, 50mm – but this is usually not a reason to switch to another lens except in those cases where I have plenty of time to do so.
  • Vignetting (corner light falloff) is certainly noticeable at f/4 and especially so at the shortest focal lengths. For most of my photography this is not an issue since I most often shoot at smaller apertures. However, I do shoot the lens at f/4 and wide angle focal lengths. In these cases a) the vignetting is actually a nice effect with some subjects, b) it can be corrected easily and pretty much automatically in post when necessary.
  • Barrel/pincushion distortion is mostly not an issue, though the lens does produce noticeable barrel distortion at 24mm. Here the situation is somewhat similar to that with vignetting. In most cases, I don’t even notice the barrel distortion in actual photographs. I do notice it in photographs that have lines parallel to and close to the edges of the frame. When necessary, I let my raw conversion software (ACR) apply an automatic correction and the image lines up nicely and still has very good resolution.
  • There is a false notion that this lens is not sharp at 24mm. This is incorrect. I think that this rumor -which is what it is – got started on internet discussion boards where people morphed the descriptions of the vignetting and barrel distortion into “poor performance at 24mm” and then further to “must not be sharp.” This is simply wrong. Sharpness is fine at 24mm.
  • Handling is great. Compared to the lens sometimes cited as an alternative, the 24-70mm f/2.8 L, this lens is more compact and a bit lighter. The lens is solidly built and the controls are accessible and easy to use.
  • Over time any lens can go out of adjustment and require service. If you use your lenses a lot, you will eventually discover this truth. In my experience, two particular issues might eventually come up with this lens. First, I notice and others have described the development of “zoom creep” after a time. The tension on the zoom mechanism seems to loosen and if you point the lens straight down it may “zoom out.” Second, although I have only my own experience to go on here, I have a slight suspicion that the lens may be a bit more susceptible to going out of adjustment with rough treatment compared to some other Canon zooms. After a few years of being banged around on the trail, mine had to go in for adjustment of a focus issue on one side of the image. After adjustment it came back working great.
  • While a f/4 zoom is generally not going to be a super bokeh lens (though there are exceptions), this lens does OK. It can produce slightly “busy” bokeh at some middle apertures. Surprisingly, it produces very nice bokeh when used with an extension tube for macro work. (In fact, for hand held photography of things like wildflowers, extension tubes attached to this lens with its IS feature can work very well.)

The dimensions of the lens are similar to, but slightly larger than, my 17-40mm lens. However, the 24-105 is noticably heavier, though not enough so to compromise its use as a walk-around lens. Speaking of which, it is regarded by many as a nearly perfect lens for this role on full-frame bodies. In fact, I’ve had great success using it for street photography!

On a 1.6 crop factor body it is less useful as a single lens solution than it is on a full frame body, since 24mm is not all that wide on this camera. (It is roughly equivalent to a 38mm lens of a full frame body which is only moderately wide.) I did use it on a cropped sensor body for about a year when I first purchased it. In practice, I found that I tended to switch back and forth between the 24-105 a wider zoom a lot. Unless you are not fond of wide angle shooting or you like to switch lenses a lot, there can be better solutions for use on cropped sensor bodies. The following are a couple of other lenses to consider if you shoot a cropped sensor body: Canon EF-S 15-85mm f/3.5-5.6 IS USM Lens or
Canon EF-S 17-55mm f/2.8 IS USM Zoom Lens. (The links go to site sponsor B&H Photo.)

My article on backpacking photography discusses how I combine the 24-105 with other lenses to produce a very viable and reasonably light backpacking kit.  In a few cases I have gotten along quite nicely on pack trips with just the 24-105 , though in most cases I combine it with the Canon 17-40mm f/4 L and/or the Canon EF 70-200mm f/4 L for more flexibility.

Bottom line: I’m quite happy with the EF 24-105 f/4 IS L lens. Color and contrast are great and it is very sharp for a zoom. The zoom range is excellent on a full frame body and might be useful for some shooters even on a 1.6 crop factor camera.

Related:

This lens is available from site sponsor B&H Photo, and your purchase though links at this site help support the blog. If this information was useful to you in making your decision, please consider purchase through the following link: Canon 24-105mm f/4L IS at B&H

Other gear mentioned in this article, with links to B&H:

G Dan Mitchell Photography
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Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

(Basic EXIF data is available by “mousing over” large images in blog posts. Leave a comment if you want to know more.)