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Canon EOS 50D Discussion
Read our Initial Test (soon to be Full Review) of the Canon EOS 50D digital SLR camera!..

Comments (6)

Can somebody help me to compare 2 cameras: Nikon D300 and Canon 50D.

I use to have Canon 30D and sold it just to change for more advanced camera.

  Actually today I have 2 choices : Nikon D300 or Canon 50D but I 've never use Nikon before.

Please give me your opinion about 2 of those. Thanks. Lenny..

Comment #1

Hello Dave I really appreciate your very detailed review of the Canon 50D. I am considering purchasing one, and your review answered a number of my questions. I have been using your site as a primary resource for some time. However, I have a quibble with your otherwise excellent Canon 50D review. You say (paraphrasing) that the higher resolution of the 50D sensor somehow reveals softness in the 28-135mm kit lens. This implies that, other factors being equal, that an image taken with the same lens with a lower resolution sensor camera will somehow appear to sharper than images take with the higher resolution sensor because the 50D is revealing flaws that weren't apparent before.

That notion doesn't compute here. All other factors being equal, the same image taken with a lower resolution sensor will either appear the same in sharpness as with a higher resolution sensor (if the the lens maximum resolution is below the resolution capability of the sensor), or the image quality will appear sharper on the camera with the higher pixel sensor (if the resolution of the lens surpasses the ability of the smaller sensor's ability to resolve it but the higher count sensor is able to resolve more detail.) You either see the same amount of detail, or you get more. Put another way: a mediocre lens will produce the same sharpness on both cameras if the factor limiting the sharpness of the photo is the lens, not the sensor. On the other hand, with a really sharp lens, the resolution with a larger count sensor will be greater because the smaller sensor is the limiting factor. And if the 15 meg sensor is revealing any more detail, it's image can only appear sharper than the image produced by the lower resolution sensor.

I agree with your assessment that it is a handy, versatile lens that produces pleasing photos, but that it is not exceptionally sharp, especially at larger apertures. (I think the new 18-55 IS kit lens is noticeably sharper.) Based on personal experience and tests I have read, I doubt if the 28-135mm lens' resolution ever exceeds my Rebel XTI's ability to resolve it's images, so I doubt that this lens will show any real sharpness improvement mounted on a 50D at an ISO settings where noise is not a factor. On the other hand, images shot with that lens on the 15 meg 50D will not appear any less sharp than those shot on the 10meg XTI because the the lens is the limiting factor. If I am wrong about this lens being the limiting factor, then the 50D's images will appear sharper than they were before, which will be an improvement. Of course you are correct that a lens with superior resolution will produce sharper images on the 50D than the 28-135 kit lens, and that a better lens will get more out of the 50D's potential, but I wouldn't say that the 50D is revealing any of the kit lens short comings that weren't already apparent with a lower rez camera, or that the kit lens somehow produces less pleasing images on the 50D than it did before.

Quibbles aside, you have an excellent site. Thanks, Winsor.

Www.winsorwhite-photos.com..

Comment #2

Hi Winsor - Thanks for the thoughtful post. As it happens, we're both right. It's true, if you shoot with the same lens on two cameras, one with a higher resolution sensor than the other, and print the output from each at the same output size, you wouldn't expect to see any difference in the apparent sharpness, if the lens was in fact the limiting factor on both cameras. In practice, with higher-megapixel cameras, most people are going to be looking at their images more closely, are going to be more prone to crop heavily to isolate their subjects, etc. It's in these situations that you'll observe the limitations of a lens more and more as you go to higher and higher sensor resolutions, and it's in this sense that the 50D exposes the limitations of the 28-135. Another way of looking at it is that the 28-135mm shoots pretty well on lower-resolution bodies like the XT or XTi, in the sense that it doesn't look all that much softer than many other lenses.

I hope that explains the sense of what we were saying. Yeah, it's always a challenge to decide what to shoot with on a camera. We shoot essentially all our lab tests with Sigma 70mm f/2.8 macro lenses, as these were among the very sharpest optics we've tested on SLRgear, and have the added advantage of being available for all platforms except Four Thirds. For the "gallery" shots, we more often shoot with lenses we think will be popular with readers, either the kit zooms or others that are likely to sell in large numbers. Our thinking in the gallery shots is that we're primarily showing how the camera handles color and tone with a variety of subjects and lighting conditions, rather than resolution, because by their nature, readers won't have identical shots made with other cameras with which to make valid comparisons of sharpness, distortion, etc.

- Dave E...

Comment #3

Sir:.

  I just read the review of the 50d, just one question concerning the review which would be very important to me purchasing the camera body. You indicated at the end of your review on the con side that the AI SERVO was not very reliable. I cuurently use the 40d and have had good luck with the AI SERVO MODE.I generally shot birds in flight and moving animals.Would you please provide more info concerning the AI SERVO problems for the 50d.

  Thank You.

  Read your web site daily for new info. keep up the good work.

  Tony Rizzo..

Comment #4

Having used the new 50D for a couple of weeks now, I would like to pass on a recommendation for it. It is a great camera and I, at least, love it. Disclaimer #1: I'm a hobby shooter, not a professional. Disclaimer #2: I upgraded from another Canon DSLR, but not the 40D. Disclaimer #3: I am not one of those nuts who pre-ordered the camera the second they could, waited for weeks with baited breath, ran out to get it the moment their preorder arrived, went home, set the camera to an ISO of 12,800, took pictures in a nearly dark room, declared the camera to be "crap", returned it to the store the same day and wrote a nasty review about entitled "How could you, Canon?" (I just read two of those "reviews.") So, here is my good impression: 1. The camera is ridiculously easy to use, at least coming from a Rebel XT.

Not having to enter the menus every time a basic setting needs changing), the re-vamped menu structure, the quick-control menu and the customiseable my-menu feature. Well done, Canon. 2. With the Canon battery grip, the camera can now be hooked to a laptop for tethered shooting, using AAs. (The Rebel forced me to replace my AAs with the custom battery packs.) That, and a 15-minute charger makes for nearly continuous power.

The ability to put a few critical features that don't have buttons into certain other buttons is very welcome. For me, the Set button changes picture size, the Func button pulls up the AE Comp/Bracket screen. 4. What can't be put into a button can be put on the My-Menu screen. I haven't found a single function yet that I think I really need that isn't available for the My-Menu menu.

Now, the exposure compensation/bracket functions are on the same screen. What a time-saver for HDR photography! I can now enter HDR shooting mode with only two hardware buttons (the Func button for setting the exposure bracket, and the drive button for setting the 2-second timer mode). Of course, getting out of it is just as easy. 6. I see rock-solid picture quality all the way to ISO 1600.

You think that the pictures at ISO 3200 are noisy? Have you ever shot with ISO 3200 FILM?? 7. The Quick-Control screen is truly useful when you just can't see the top panel, for whatever reason. In fact, it's a lifesaver then. 8. Live view? I don't shoot with it, but I do have it set to exposure simulation.

Want to shoot a silhouette against a bright background? Live view with exposure simulation will tell you in a quick-and-dirty check if you're there or not. 9. I also find that the camera has good compatibility. With firmware 103 installed, I have no lens problems, and most of my lenses are Sigmas. All this adds up to a magnitude of performance and usability increases..

Comment #5

Tony: Shawn writes: __ I just read the review of the 50d, just one question concerning the review which would be very important to me purchasing the camera body. You indicated at the end of your review on the con side that the AI SERVO was not very reliable. I cuurently use the 40d and have had good luck with the AI SERVO MODE.I generally shot birds in flight and moving animals.Would you please provide more info concerning the AI SERVO problems for the 50d. Animals, birds and automobiles are fine with AI Servo, as they usually move along regular paths, but shooting sports is another story. There's more random directional motion that the Canon 50D can't keep up with as well as the 1D-series cameras. It does okay, but not as well as I'd like. Shawn Barnett.

Senior Editor __ Hope this helps. Forum Admin..

Comment #6

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