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Actual OIS performance: Lumia 920 against iPhone 5, Galaxy S III, HTC One X

engadget.com

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Re: Actual OIS performance: Lumia 920 against iPhone 5, Galaxy S III, HTC One X

#2

Post by mtgx »

All of the others seem "zoomed in". I've heard someone say it's because the others use digital stabilization, which means they have to crop the middle of the image to stabilize it against the edges, or something like that. Is that true? Because then OIS seems to significantly improve image quality in video recording as well.

Re: Actual OIS performance: Lumia 920 against iPhone 5, Galaxy S III, HTC One X

#3

Post by m_eiman »

mtgx wrote: post #2

All of the others seem "zoomed in". I've heard someone say it's because the others use digital stabilization, which means they have to crop the middle of the image to stabilize it against the edges, or something like that. Is that true? Because then OIS seems to significantly improve image quality in video recording as well.

To me it looks like the "others" have far lower bitrate than the Nokia. It'd be interesting to see the originals.

Re: Actual OIS performance: Lumia 920 against iPhone 5, Galaxy S III, HTC One X

#6

Post by yread »

mtgx wrote: post #2

All of the others seem "zoomed in". I've heard someone say it's because the others use digital stabilization, which means they have to crop the middle of the image to stabilize it against the edges, or something like that. Is that true? Because then OIS seems to significantly improve image quality in video recording as well.

It makes sense 920 has 26mm focal length, S3 16mm, iPhone 5 33mm (equivalents). Smaller focal length - wider field of view so it makes sense that iPhone feels zoomed in. I can't see the difference for S3, though. Magic?

Re: Actual OIS performance: Lumia 920 against iPhone 5, Galaxy S III, HTC One X

#8

Post by joeblau »

I don't understand why Nokia doesn't just make a commercial instead of some home movie blog post? Their tech is better so advertise that; Part of Apples success is controlling the 5W's of presenting their information to customers. Another thing is that if engineers with DSLR's are Nokias marketing department, they are in big trouble.

Re: Actual OIS performance: Lumia 920 against iPhone 5, Galaxy S III, HTC One X

#9

Post by jonaphin »

Not to give in to conspiracies of any sort, but these videos prove nothing.

1. Why are the zoom levels different?

2. I'm certain the HTC One X can shoot more decent videos than what we saw.

3. Are we dealing with equivalent bitrates?

4. Isn't Image Stabilization a post-processing solved problem? I mean, it's great to have it in real-time (after a google search, it seems all three do have the feature), but there's nothing wrong with post-processing when you REALLY care about the final quality of your work.

Re: Actual OIS performance: Lumia 920 against iPhone 5, Galaxy S III, HTC One X

#10

Post by anonymfus »

jonaphin wrote: post #9

Not to give in to conspiracies of any sort, but these videos prove nothing. 1. Why are the zoom levels different? 2. I'm certain the HTC One X can shoot more decent videos than what we saw. 3. Are we dealing with equivalent bitrates? 4. Isn't Image Stabilization a post-processing solved problem? I mean, it's great to have it in real-time (after a google search, it seems all three do have the feature), but there's not…

1. Lumia have wider field of view.

4. Today commercially available video post processing algorithms can only solve relative stabilisation between frames of video, because inframe stabilisation is still very slow for modern hardware.

*Edited. 4 was "No, because post processing can only solve relative stabilisation between frames of video, it does not work within one frame."

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