Canon XSi: 12.2 Megapixels, Image Stabilized Lens, and Double Live View
by Wesley Fink on May 5, 2008 3:00 AM EST- Posted in
- Digital Camera
Two Live View Modes
When Canon first announced the XSi at the PMA show in late January, they created quite a stir with the announcement that Live View would be available in two modes on the XSi. The first mode was what everyone has been including, namely that the mirror is flipped up and you can see the sensor image on the LCD and manually focus. In this mode Auto Focus requires that the mirror be flipped back down, for AF measurement, which is slow and also momentarily blacks out the Live View.
Mode 2 for Canon Live View uses contrast detection for focusing. The image does not blank on the LCD and focus can happen while you are viewing the LCD. These appear to be the same two Live View modes that are implemented on the $1800 Nikon D300. Unfortunately the contrast detection Live View is still painfully slow on the XSi, meaning that neither mode is very useful for sports or fast moving subjects.
Live View is this year's check box feature and the XSi has one of the best Live View implementations using the main sensor. The only current production camera that uses a different Live View approach is the Sony A350 we recently reviewed. Sony uses a second sensor to provide real-time Live View on the A350 and A300 that is just as fast as using the viewfinder for shooting. The A350 is 14.2MP while the A300 is 10MP, but both feature a flip-down/flip-up LCD for convenient Live View use.
In terms of focusing speed the Sony A350 is clearly a faster and more convenient implementation of Live View. However, the second sensor in the Sony brings its own set of compromises. The Canon XSi provides basically a 100% view of the image on the LCD, where the Sony second sensor only shows about 90%. Sony also offers no image zoom feature for easier focusing, where the Canon XSi allows selection of an area and Live View zooming for more precise focusing.
The contrast in Live View approaches is pretty dramatic between the Sony A350 and the XSi. If you want to use Live View instead of the viewfinder and shoot using the LCD, Sony Live View is better. If you prefer using Live View for studio-type static or macro shooting, the Canon XSi Live View offers more precise framing and more precise control of the final image.
In addition, the much larger and brighter Canon XSi optical viewfinder makes using the viewfinder easier on the XSi compared to the mediocre tunnel-vision finder in the Sony A350. If you plan to shoot mainly using the traditional viewfinder then the Canon XSi is the better choice, with slow but decent Live View shooting options.
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pinto4402 - Monday, May 5, 2008 - link
Your observation about Canon's overly warm/red WB in tungsten lighting is shared by many camera reviewers/users. It's a "problem" that has been noted for a long time. Some people actually prefer the overly warm colors, though. I'm sure this is the reason why Canon has never fixed their WB.Deadtrees - Monday, May 5, 2008 - link
"Working range AF specifications are the same EV range of -0.5EV to 18EV. However, the 40D adds an additional diagonal cross-type sensor with greater precision for f2.8 lenses, providing better support for fast Canon L lenses."- Not trying to be picky or anything but that is somewhat misleading as not all L lenses have aperture values faster than f/2.8.
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"Overall, the Sony A350 actually does better against the Canon XSi than we really expected and acquits itself quite well for a higher resolution sensor that should be showing greater noise than the Canon XSi. Resolution and noise control to ISO 1600 on the Sony holds its own against a sensor maker than has been the low-noise standard since DSLRs began."
- Keep in mind that A350 utilizes quite agressive noise deduction algorithms resulting smudged water color like images. If you think less noise is good no matter what, I guess it's not so bad. But, what about details that are lost? Do you really want over 10mp dslr images to show details as cell phone cameras? Hell, in that case, even point-and-shoot panasonic cameras that are known for crazy noise reduction algorithm can compete head to head with Nikon D3.
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BTW, I really suggest you to change the test subject. It's glossy coated hardboard papers which makes it virtually impossible to see the loss of details caused by insance noise reduction algorithms.
Lord 666 - Monday, May 5, 2008 - link
Wes,If you are comparing the XTi vs. XSi vs. 40D, why not include the D300 as well to compare against?
Wesley Fink - Monday, May 5, 2008 - link
We will include the D300 results in Part 2 of our Digital Sensor article. We will be comparing resolution and noise in different sensor categories, such as 14 megapixel, 12 megapixel, and 10 megapixel.I did toy with the idea of including the D300 in comparisons in this review, but I figured Canon to past Canon XTi to top Canon prosumer 40D was a bit more logical than a $800 body to a $1800 body. I'll leave that comparison for the digital sensor article.
complectus - Monday, May 5, 2008 - link
Is that a Frank Lloyd Wright house in 2 of the Sample Images?Wesley Fink - Monday, May 5, 2008 - link
Yes it is Frank Lloyd Wright. I am fortunate that a real Wright house is in my neighborhood. The furniture was also custom built for the rooms in th eWright house, as was typical of many of his home designs.It was built in the early 1900's and is contemporary to the other homes in the photographs. I figured someone would catch it.
pinto4402 - Monday, May 5, 2008 - link
For about five minutes, I was interested in the Xsi as a lightweight backup camera body for event photography. However, the lack of a CF card slot completely nixes this idea. It doesn't make any sense for Canon to switch from CF to SD, other than to attract P&S owners who want to migrate to a DSLR. By doing so, however, Canon effectively excluded us existing DSLR owners who already have many of their lenses and who would be more likely to purchase. I can tolerate the Xsi's plastic body, but I'm not going to invest in new storage media just to use this camera.Wesley Fink - Monday, May 5, 2008 - link
You can buy a 16GB class 6 hi-speed SD card for $55, a 4GB Class 6 for about $20, or an 8GB for around $30. I can't believe that small expense would keep you from buying and using the XSi if you really wanted to.Nikon uses SD on the D80 and D60, Pentax uses it on the K20D and K200D. Sony still uses CF, but new Sony lenses cost a lot more than today's cheap SD and CF memory.
RDaneel - Monday, May 5, 2008 - link
I have no problem with AT doing camera reviews, I think it's a valuable perspective for hobbyists and prosumers. Obviously AT isn't going to review $1500 lenses...That being said, this review reads more like Canon ad copy than a real comparative review. There isn't any serious examination of the image quality, and it feels like more effort is spent in comparing the number of AF points and megapixels than really looking at the camera as a DSLR system or really talking about IQ. Just kind of a disappointment, normally the objectivity on AT is a bit better. Did the author get to keep the free press sample? ;)
Wesley Fink - Monday, May 5, 2008 - link
There was no Press sample - not even a loaner. We had to buy the XSi that was reviewed. The same goes for the Nikon D60 and Sony A350 that were compared to the XSi. Since we bought them all we owe nothing to any manufacturer.The XSi won't replace my D300 or my Pentax K20D, but it is a really superb entry camera.