Comments on: Canon Working on In-Viewfinder LCD and Sensor-based Stabilization http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/ Fri, 10 Feb 2012 06:29:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: nathanyan http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-10189 nathanyan Tue, 18 May 2010 02:10:03 +0000 http://www.petapixel.com/?p=5680#comment-10189 Nope, you've got it precisely backwards. ALL lens-based methods correct for rotational shake, and almost none of them work on lateral shake. This is why most IS systems are ineffective for macro images. At short subject distances, lateral shake becomes the dominant source of image blur.<br><br>Here is a Canon animation demonstrating how their IS system works. Note that the type of shake shown is very clearly a rotation of the camera.<br><br><a href="http://www.canon.com/bctv/faq/optis.swf" rel="nofollow">http://www.canon.com/bctv/faq/optis.swf</a><br><br>Sensor-shift methods mostly work on lateral shake, which is why they've been regarded as not quite as effective for telephoto images. However a few of the newer ones (like the K7 you mentioned) claim to correct for rotational shake as well.<br><br><br> Nope, you've got it precisely backwards. ALL lens-based methods correct for rotational shake, and almost none of them work on lateral shake. This is why most IS systems are ineffective for macro images. At short subject distances, lateral shake becomes the dominant source of image blur.

Here is a Canon animation demonstrating how their IS system works. Note that the type of shake shown is very clearly a rotation of the camera.

http://www.canon.com/bctv/faq/optis.swf

Sensor-shift methods mostly work on lateral shake, which is why they've been regarded as not quite as effective for telephoto images. However a few of the newer ones (like the K7 you mentioned) claim to correct for rotational shake as well.

]]> By: Anu http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-10161 Anu Mon, 17 May 2010 12:08:25 +0000 http://www.petapixel.com/?p=5680#comment-10161 Wrong. AFAIK there is so far only one lens with rotational correction for shaking, while Pentax K7 corrects for this as well. Before this all corrections were for lateral movement. <br><br>Sensor shift works just as well, if not better than lens based systems, under all conditions - the real difference is that Canon and Nikon started making stabilized systems durting the film era when it was the only possible option. As they have a portfolio of such lenses as cash cows, they have to defend their way.<br><br>And all the IS systems at the moment are not too good at macro-distances. I am guessing this has something to do with changing angle of view. Wrong. AFAIK there is so far only one lens with rotational correction for shaking, while Pentax K7 corrects for this as well. Before this all corrections were for lateral movement.

Sensor shift works just as well, if not better than lens based systems, under all conditions – the real difference is that Canon and Nikon started making stabilized systems durting the film era when it was the only possible option. As they have a portfolio of such lenses as cash cows, they have to defend their way.

And all the IS systems at the moment are not too good at macro-distances. I am guessing this has something to do with changing angle of view.

]]> By: Dave K http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-4849 Dave K Wed, 17 Feb 2010 08:44:18 +0000 http://www.petapixel.com/?p=5680#comment-4849 In the military devices for augmented reality I can think of three or four devices already using similar setups. If I thought about it I bet I could come up with more. In the military devices for augmented reality I can think of three or four devices already using similar setups. If I thought about it I bet I could come up with more.

]]> By: Dave K http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-4848 Dave K Wed, 17 Feb 2010 08:41:26 +0000 http://www.petapixel.com/?p=5680#comment-4848 Just because a patent is issued doesn't make it defensible.<br>Off the top of my head I can think of a number of other devices that would cover the prior art and obviousness criteria for this setup LCD in the view finder. Just because a patent is issued doesn't make it defensible.
Off the top of my head I can think of a number of other devices that would cover the prior art and obviousness criteria for this setup LCD in the view finder.

]]> By: Top US Patents Captured by Non-American Companies http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-4835 Top US Patents Captured by Non-American Companies Tue, 16 Feb 2010 22:00:25 +0000 http://www.petapixel.com/?p=5680#comment-4835 [...] interesting note: out of the top 10 on the list, many, such as Canon (viewfinder patent sketch featured above), Panasonic, are diverse companies whose products include printers and televisions, [...] [...] interesting note: out of the top 10 on the list, many, such as Canon (viewfinder patent sketch featured above), Panasonic, are diverse companies whose products include printers and televisions, [...]

]]> By: Happy_Tinfoil_Cat http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-4060 Happy_Tinfoil_Cat Wed, 27 Jan 2010 06:07:45 +0000 http://www.petapixel.com/?p=5680#comment-4060 I, for one, would like to have the option of seeing a hi-res image showing blow-out areas when the shutter is pressed half way down. The pixels can be as small as you want, even to the point you can't see them; It's just a silkscreen process. The increased cost comes from a slightly more sophisticated graphics controller to handle increased number of pixels.<br><br>After the age of 40, I have not been able to adjust focus in-camera very well. Years ago I had a Sony F707 that would temporarily zoom into the frame when you adjusted the focus ring. It was a nifty way to see what you're focusing on (if it happened to be in the center). It would be much nicer if Canon sets it up to zoom in on the active focus point. You can buy a loupe for the viewfinder but these are hundreds of dollars, especially for the electronic versions.<br><br>I am not so jazzed over the current IS stabilization mechanisms. Stabilization softens the shot, have limitations for panning, or in shaky environments, eat a bit of light, and reliability is a known problem in some lenses. For the money, faster glass is sharper and more versatile. Hopefully, any in-body IS will be well implemented. I, for one, would like to have the option of seeing a hi-res image showing blow-out areas when the shutter is pressed half way down. The pixels can be as small as you want, even to the point you can't see them; It's just a silkscreen process. The increased cost comes from a slightly more sophisticated graphics controller to handle increased number of pixels.

After the age of 40, I have not been able to adjust focus in-camera very well. Years ago I had a Sony F707 that would temporarily zoom into the frame when you adjusted the focus ring. It was a nifty way to see what you're focusing on (if it happened to be in the center). It would be much nicer if Canon sets it up to zoom in on the active focus point. You can buy a loupe for the viewfinder but these are hundreds of dollars, especially for the electronic versions.

I am not so jazzed over the current IS stabilization mechanisms. Stabilization softens the shot, have limitations for panning, or in shaky environments, eat a bit of light, and reliability is a known problem in some lenses. For the money, faster glass is sharper and more versatile. Hopefully, any in-body IS will be well implemented.

]]> By: Happy_Tinfoil_Cat http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-4059 Happy_Tinfoil_Cat Wed, 27 Jan 2010 01:07:45 +0000 http://www.petapixel.com/?p=5680#comment-4059 I, for one, would like to have the option of seeing a hi-res image showing blow-out areas when the shutter is pressed half way down. The pixels can be as small as you want, even to the point you can't see them; It's just a silkscreen process. The increased cost comes from a slightly more sophisticated graphics controller to handle increased number of pixels.<br><br>After the age of 40, I have not been able to adjust focus in-camera very well. Years ago I had a Sony F707 that would temporarily zoom into the frame when you adjusted the focus ring. It was a nifty way to see what you're focusing on (if it happened to be in the center). It would be much nicer if Canon sets it up to zoom in on the active focus point. You can buy a loupe for the viewfinder but these are hundreds of dollars, especially for the electronic versions.<br><br>I am not so jazzed over the current IS stabilization mechanisms. Stabilization softens the shot, have limitations for panning, or in shaky environments, eat a bit of light, and reliability is a known problem in some lenses. For the money, faster glass is sharper and more versatile. Hopefully, any in-body IS will be well implemented. I, for one, would like to have the option of seeing a hi-res image showing blow-out areas when the shutter is pressed half way down. The pixels can be as small as you want, even to the point you can't see them; It's just a silkscreen process. The increased cost comes from a slightly more sophisticated graphics controller to handle increased number of pixels.

After the age of 40, I have not been able to adjust focus in-camera very well. Years ago I had a Sony F707 that would temporarily zoom into the frame when you adjusted the focus ring. It was a nifty way to see what you're focusing on (if it happened to be in the center). It would be much nicer if Canon sets it up to zoom in on the active focus point. You can buy a loupe for the viewfinder but these are hundreds of dollars, especially for the electronic versions.

I am not so jazzed over the current IS stabilization mechanisms. Stabilization softens the shot, have limitations for panning, or in shaky environments, eat a bit of light, and reliability is a known problem in some lenses. For the money, faster glass is sharper and more versatile. Hopefully, any in-body IS will be well implemented.

]]> By: nathanyan http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-4042 nathanyan Tue, 26 Jan 2010 12:05:22 +0000 http://www.petapixel.com/?p=5680#comment-4042 The lens-based systems theoretically stabilize better overall because they correct for rotational shake, which is the dominant source of blur for medium-to-far distances and more narrow angles of view (telephotos). Sensor-shift systems correct for lateral shake, which is still effective but less so the narrower the angle of view and longer the distance. But sensor-shift works well for short shooting distances, like macro, which is an area that lens IS hasn't done well at until the recent introduction of the "hybrid IS" systems recently that also correct lateral shake. The lens-based systems theoretically stabilize better overall because they correct for rotational shake, which is the dominant source of blur for medium-to-far distances and more narrow angles of view (telephotos). Sensor-shift systems correct for lateral shake, which is still effective but less so the narrower the angle of view and longer the distance. But sensor-shift works well for short shooting distances, like macro, which is an area that lens IS hasn't done well at until the recent introduction of the “hybrid IS” systems recently that also correct lateral shake.

]]> By: nathanyan http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-4041 nathanyan Tue, 26 Jan 2010 12:02:43 +0000 http://www.petapixel.com/?p=5680#comment-4041 It depends on the usage. Would you be able to assess focus at a glance as easily as a larger rear LCD? Probably not. But think of all the other things that you use the LCD review for: exposure, composition, whether you got the right timing - all of these can be checked with a quick glance. And most people who really worry about focus are assessing it by zooming in on the image anyway, which you could still do with the in-camera LCD. It depends on the usage. Would you be able to assess focus at a glance as easily as a larger rear LCD? Probably not. But think of all the other things that you use the LCD review for: exposure, composition, whether you got the right timing – all of these can be checked with a quick glance. And most people who really worry about focus are assessing it by zooming in on the image anyway, which you could still do with the in-camera LCD.

]]> By: nathanyan http://www.petapixel.com/2010/01/25/canon-working-on-in-viewfinder-lcd-and-sensor-based-stabilization/comment-page-1/#comment-4040 nathanyan Tue, 26 Jan 2010 07:05:22 +0000 http://www.petapixel.com/?p=5680#comment-4040 The lens-based systems theoretically stabilize better overall because they correct for rotational shake, which is the dominant source of blur for medium-to-far distances and more narrow angles of view (telephotos). Sensor-shift systems correct for lateral shake, which is still effective but less so the narrower the angle of view and longer the distance. But sensor-shift works well for short shooting distances, like macro, which is an area that lens IS hasn't done well at until the recent introduction of the "hybrid IS" systems recently that also correct lateral shake. The lens-based systems theoretically stabilize better overall because they correct for rotational shake, which is the dominant source of blur for medium-to-far distances and more narrow angles of view (telephotos). Sensor-shift systems correct for lateral shake, which is still effective but less so the narrower the angle of view and longer the distance. But sensor-shift works well for short shooting distances, like macro, which is an area that lens IS hasn't done well at until the recent introduction of the “hybrid IS” systems recently that also correct lateral shake.

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