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Thoughts

Canon 5D Mark II soft focus due to camera or lens?

I reviewed the new 5D Mark II back in October of 2008, and my decision back then was to wait until they’ve worked out the bugs. It looks like I did the right thing. I’ve been hearing quite a bit lately about focus issues with the camera. It looks like it can’t focus properly. It’s slow to focus, and when it does focus, the images are soft. See this blog post for an example.

I’m still not sure what lies at the root of the focusing problems. People are comparing photos taken with the 5D Mark II against photos taken with the original 5D, but it’s sort of like comparing apples to oranges. To compare images accurately, you’d need to first downsize the resolution of the images from the 5D Mark II to 12.8 megapixels, to make them equal in pixel depth to those that come out of the original 5D. I have yet to see something like that.

I think what’s going on here is that we’re seeing either the limitations of Canon’s 9-point AF system, or the limitations of their lenses, and this is due to the sensor’s increased megapixel count. In effect, all those extra megapixels have run ahead of the camera’s AF capabilities. It’s like a bodybuilder who’s got huge muscles but hasn’t trained his joints. His tendons have remained weak, and sooner or later he’ll tear something.

The thing is, I’m getting soft images with my original 5D, and I get them quite often. Sure, most of the images I get are in focus, but I bet you that if my 5D were able to output 21 megapixels of resolution, those same seemingly sharp images would be just as soft as those that come out of the 5D Mark II.

It could very well be that the 9-point AF system can’t focus properly. It’s just not that good, and its focusing limitations are seen quite well at higher resolutions. In that case, I have a feeling that the 16 megapixel images that one can get with the EOS 50D would also show some soft focus issues. They wouldn’t be as apparent as those found in the 5D Mark II, since there’s a bit of difference between 16 megapixels and 21 megapixels, but they should be there. It looks like some people are noticing a soft focus with the 50D, so there might be something to my theory.

On the other hand, it could be that my lenses, and the lenses of these people complaining about soft focus with the new 5D, need to be sent in for calibration. There certainly are tons of complains about soft images gotten with Canon lenses of all kinds — that’s nothing new. Who knows, if they and I got to send in our lenses, and they got properly re-calibrated by knowledgeable technicians, the images would be sharper.

So there you have it. I’m not sure what to think. I’m leaning toward the side that says the 9-point AF system needs to grow up, but I’m open to suggestions. Perhaps Canon ought to license the 11-point AF system from Olympus. They put it in their E-3 DSLR, which came out at the end of 2007. It’s supposed to be the fastest and most accurate AF system on the market, and it’s meant to work well even in low light. After all, let’s face it, both Canon and Nikon have borrowed the Live View concept from Olympus — they were the first to come out with it. Why not borrow the AF system as well?

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Camera preview: Nikon D3 and D300 DSLRs

On August 23, 2007, Nikon introduced two new DSLRs to the market: the full frame D3, and the D300, an upgrade to the D200. I’m late with this bit of news — I meant to publish the post sooner, but I was out of the country and I had less access to the internet that I’d hoped. Still, since I went to the trouble of getting nice studio pics for the two cameras, I thought I’d write about it anyway, late or not.

First, a few photos. There’s the D3 below, and the D300 is right after it.

These two cameras have gotten plenty of coverage already. What else is there to be said? Well, remember the big CCD vs. CMOS arguments that went on and on for years? Hmm, let’s see, who was it that argued for CCD? Why, it was Nikon, of course. What have they just done? They’ve switched to CMOS entirely for their new DSLRs.

There was another argument thrown around, also by Nikon and its supporters. Um, yes, I remember now, it had something to do with full-frame vs. cropped sensors. I’m paraphrasing here, but Nikon people were saying something along the lines of “full-frame isn’t needed for digital, it’s useless — we can accomplish everything we want with a cropped sensor.” So, what just happened? Nikon put out a full-frame DSLR.

Short of holding my brother’s D70s in my hand, changing the lens, cleaning its sensor and taking a few photos, I don’t have a lot of hands-on experience with Nikon cameras. I considered buying the D200 this past spring, but opted for the Canon 5D instead. I can tell you what my brother says about his D70s — and believe me, it’s not flattering… It turns out there was a ridiculously high rate of factory defects with that camera, particularly when it came to autofocus. His camera can’t autofocus to save its life. He’s had to use manual focus ever since he bought the camera. He’s finally going to pay to repair it, after more than one and a half years of use. He’d have sent it to Nikon for repair while the warranty was still good, but there are no official Nikon reps in Romania, which is where he lives and works.

We sat there comparing on-screen menus between his D70s and my Canon 5D. He couldn’t believe how easy it was to navigate the menus on my 5D, and to get the settings that he wanted, the first time, right away. He kept mumbling under his breath about how pathetic the D70s was, and how he could never find stuff when he was pressed for time. Heck, I tried to help him find the sensor cleaning mode and gave up after several minutes. We just couldn’t find it. We ended up putting the camera in mirror lock-up mode, pressing the shutter and cleaning the sensor that way. That’s pretty pathetic from a UI (User Interface) point of view.

On the other hand, I’ve heard some people praise Nikon’s controls. I don’t get it. Perhaps if you’ve been a Nikon guy for years, the stuff is just easier to find, but they sure don’t make it easy for someone who picks up the camera and wants to use it. Canon does make it easy, and that’s one of the reasons I like them.

There’s another thing I can say for Nikon in general. Their PR people gave me the run-around when I tried to get a D200 for review. On the other hand, Olympus and Canon were responsive and willing to send me review units. I’ve also heard of really bad customer support experiences from Nikon users.

Take these experiences for what they’re worth. They may have been isolated incidents — or not. I’m certainly willing to forget my bad experience with Nikon PR if they are interested in sending me a D300 or D3 for review. I’ll do what I usually do, which is to use it as my primary camera for one month, then write an honest, detailed review of the experience.

From a design point of view, these two new cameras look really nice. I can’t tell you how they feel in my hand, since I haven’t had the chance to hold them (yet).

I do want to point out that Nikon has more high-res photos for its cameras than Canon. That’s nice. It gives people a chance to get a closer look at them, and it’s an added convenience. You can see the rest of the photos below.

Here’s that troublesome CMOS that Nikon people used to badmouth in the past. It’s the sensor that does what a CCD cannot, which is to enable Nikon to go all the way to 6400 ISO natively on the D3 and 3200 ISO on the D300 (and even all the way up to 12,800 and 25,600 ISO in expanded mode on the D3).

Yes, ISO-wise, Nikon one-upped Canon, but they haven’t managed to get the same amount of resolution from the full-frame sensor that Canon can get. My 5D has roughly the same resolution as the D3 (12.8 vs. 12.1), while the Canon 1Ds Mark III has 21.1 megapixels — but only goes up to 1600 ISO natively. So there’s a certain give and take here that has to do with the physical limitations (at least to date) of the medium.

If you squeeze more pixels out of the same surface area, the pixel pitch decreases and you end up more prone to noise. If you keep the pixel pitch large, you can get more low-light sensitivity, but you don’t have the resolution. Nikon chose to go for low-light sensitivity with their two newest cameras, which I think is an interesting choice. Perhaps they did it to silence the Nikon critics who kept harping on their noise-prone CCD sensors. Whatever the reason, I’d love to see just how one of these two cameras does in low light with a nice fast lens like a 50mm f/1.4 or f/1.2.

Till then, I’ll leave you with more information:

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Lens preview: EF 14mm f/2.8L II USM Prime

Canon chose to announce the availability of a new wide-angle lens along with the EOS-1Ds Mark III. It’s the new EF 14mm f/2.8L II USM prime, which upgrades the existing EF 14mm f/2.8L USM.

The lens will feature the same correction for rectilinear distortion, but with improved dust and water resistance, a round aperture for nice bokeh, and a better-designed cap, that’s held to the lens by a stopper. Having briefly used the existing 14mm prime, I can tell you the lens cap kept falling off, and it was a real hassle to get the lens out of a gear bag if the cap end was facing toward you. It would come off immediately, and then you’d inevitably touch the lens surface with your fingers, which required a cleaning.

The price for this lens will be approximately $400 more than the street price of the existing 14mm prime, at around $2,199.

More information:

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Camera preview: Canon EOS-1Ds Mark III DSLR

On the same day that it released information about the upcoming EOS 40D DSLR, Canon dropped a bombshell. The much-expected 1Ds Mark III is ready, and will begin shipping in November. We all knew it was coming, but what we didn’t expect was the medium format-like resolution: a whopping 21.1 megapixels!

Canon EOS-1Ds Mark III (front)

Here are the specs where the 1Ds Mark III differs from the 1Ds Mark II:

  • Resolution: 21.1 megapixels vs. 16.7 megapixels
  • Processing engine: DIGIC III vs. DIGIC II
  • AF: re-designed 45-point vs. previous-generation 45-point AF (there were some issues with this new AF system in the 1D Mark III, and I hope they’ve been addressed by now)
  • Color depth: 14-bit vs. 12-bit
  • Live View
  • Integrated sensor cleaning
  • WB: 12 vs. 10 settings
  • Viewfinder magnification: 0.76x vs. 0.70x
  • Exposure control: 63-zone vs. 21-zone metering
  • Drive speed: 5 fps vs. 4 fps
  • LCD monitor: 3 inches vs. 2 inches
  • Shutter durability: 300,000 cycles vs. 100,000 cycles
  • Battery: lithium-ion (LP-E4) vs. Ni-MH (NP-E3)
  • Battery life: better, but no data provided vs. 800-1200 shots/battery/charge with the 1Ds Mark II
  • Weight, body only: 1,205 grams vs. 1215 grams

As Canon themselves point out, they wanted to venture into the realm of high-fashion and commercial studio photography with the new 1Ds. Traditionally, medium-format cameras dominated those markets. Besides the wonderful resolution, the 1Ds would bring two other things: portability and affordability. Medium-format cameras are more expensive, and they’re usually heavier. Let’s not forget the 1Ds also goes up to 1,600 ISO, which is unheard of in medium format cameras with digital backs. The ISO range there is usually 100-400, with the occasional 800 seen in some models. The additional ISO range should provide those photographers with more creative uses of light and more flexibility in various conditions.

The camera uses the new DIGIC III image processor introduced with the 1D Mark III earlier this year. But it uses two of them, working in parallel. There’s a lot of data crunching to be done when the resolution is 21.1 megapixels and the frame rate is 5 fps! The CMOS sensor reads out to both processors through eight channels, ensuring fast signal transfers.

Canon EOS-1Ds Mark III (back)

The 1Ds also features a new 14-bit analog-to-digital conversion process, which means that it can recognize 16,384 colors per channel — four times the number of colors recognized by 12-bit cameras like the 1Ds Mark II or the 5D.

In addition to using CF type-I and II cards, the camera is also compatible with the UDMA specification, which doubles the data transfer speed of a normal CF card when used with UDMA-compliant cards.

The sensitivity of the new AF system’s sensor has been doubled to EV-1, for greater accuracy in low light. The AF point of focus can also be micro-adjusted based on the type of lens used, and the focus-tracking sensitivity can also be finely adjusted.

Another really nice feature is Live View, which works in much the same way as on the 40D — see my review of it for those details. The Live View function also works with the EOS Utility software, which means you can see just what the camera sees through your computer’s monitor, and control it remotely for studio sessions.

The EOS Integrated Cleaning System shakes off dust from the low-pass plate installed in front of the sensor with ultrasonic vibrations when the camera is turned on or off. A special adhesive collar installed around the sensor collects the dust and holds it there.

Finally, comprehensive weatherproofing is present at 76 locations on the camera, providing protection and allowing the use of the camera in demanding conditions.

The camera will start shipping in November and retail for $7,999. I expect the street price to stick pretty close to that for at least a few months after the launch.

Canon EOS-1Ds Mark III (side)

More information:

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Camera preview: Canon EOS 40D DSLR

On August 20, just three days ago, Canon announced the new EOS 40D DSLR, the successor to the very good EOS 30D camera. The camera will begin selling in September, and Amazon has already started taking pre-orders. After reviewing the specs and photos, I am impressed. Canon has made the 40D better than the 30D exactly where it mattered, and more.

Canon EOS 40D (front)

The 40D is a bargain considering its features. Let me run through the important ones:

  • 10.1 megapixel CMOS imaging sensor, capable of up to 3200 ISO natively
  • DIGIC III image processor
  • Redesigned AF
  • 6.5 fps continuous shooting capability up to 75 large/fine JPEG or 17 RAW files
  • 3-inch LCD with a higher brightness level and broader color gamut than the 30D
  • Upgraded viewfinder: 0.95x magnification, 264 degrees viewing angle and 22mm eye point)
  • Magnesium-alloy body with dust and weather resistant construction, unlike the 30D
  • Live View (yes, this isn’t a typo)
  • Integrated sensor cleaning

Although the sensor has the same resolution as the Rebel XTi, it is not the same sensor. The 40D’s sensor has microlenses over each pixel to enable increased sensitivity up to 3200 ISO. More importantly, the sensor can recognize four times the number of colors recognized by the 30D, due to its 14-bit color depth (wow!). In addition to this, the 40D also features Highlight Tone Priority and High ISO Noise Reduction functions as the 1D Mark III professional DSLR.

The amazing frame-rate, which is more than the 5 fps rate of the 30D, is achieved through the new DIGIC III processor, DDR SDRAM memory buffering, four-channel per line sensor readout, and two separate motors for shutter and mirror operation.

The on-screen menu now has the same tabbed format as the 1D Mark III DSLR. The viewing angle had to be decreased from 170 to 140 degrees, in order to make the screen more viewable during bright daylight — this is in addition to the improvements cited for the LCD in the bullet points above.

Canon EOS 40D (back)

AF has been re-designed to produce greater precision at all focal points, up to f/5.6, and increased precision for center AF on lenses at or faster than f/2.8. AF calculations are 30% faster on the 40D than the 30D. Photographers can also opt for two focusing screens: a grid-type screen that makes it easy to compose the shots, or a matte screen re-designed for AF precision.

Not many other reviewers have spotted this, but the 40D offers Live View! Yes, indeed, you can now compose your shots using either the viewfinder or the LCD screen. A quick aside: Olympus was the first company to use Live View on their prosumer DSLRs.

Usually, there’s increased shutter lag with Live View, since the mirror has to swing back down to block out the light, then back up to allow for the proper exposure. The shutter lag with the 40D is said to be minimal because the mirror stays up and only the shutter opens when you click the shutter button. This also helps reduce noise and vibration. Oh, did I mention that you can zoom in on the LCD screen to make sure your focusing is tack sharp during Live View?

The Live View function also works with the EOS Utility software, which means you can see just what the camera sees on your computer’s monitor, and control it remotely for studio sessions.

The EOS Integrated Cleaning System shakes off dust from the low-pass plate installed in front of the sensor with ultrasonic vibrations when the camera is turned on or off. A special adhesive collar installed around the sensor collects the dust and holds it there.

There’s a redesigned vertical grip/battery holder, with weather and dust resistance built-in, and a new Wireless File Transmitter (WFT-E3A) has also been introduced. The battery life’s been improved over the 30D, and my guess is you’ll be able to get about 1,500 shots/battery/charge. That means about 3,000 shots altogether with the vertical grip in place.

You can buy the 40D by itself, or with the new EF-S 18-55mm f/3.5-5.6 IS Standard Zoom (available in October), or the EF 28-135mm f/3.5-5.6 IS USM Zoom (as pictured below).

Canon EOS 40D (side)

More information:

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