FZ200 intelligent zoom

Started Sep 11, 2013 | Discussions
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estero
estero Senior Member • Posts: 1,229
FZ200 intelligent zoom
1

Somewhere I read how the intelligent zoom works but now I can't find it. Does anyone know where it was posted or can give an explanation please post it.

PC Wheeler
PC Wheeler Forum Pro • Posts: 16,030
Re: FZ200 intelligent zoom

Try a forum search for intelligent zoom or iZoom.

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Phil

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Rodger1943
Rodger1943 Senior Member • Posts: 7,911
Re: FZ200 intelligent zoom
1

I've never been able to work out the difference. I think its an in-camera crop, but to me, I can't see the difference between the camera doing a crop and you doing a crop, which is the same as digital zooming. I have run comparisons between the different forms of zooms on this camera and I can see no difference between the results. I tend to use the so called "extra optical zoom" as it gives a degree of control over your zooming. By that I mean once you switch on the izoom, or digital zoom, it becomes very hard to control the degree of zoom using the zoom lever. You find that the zoom will sweep through a large range with the smallest movement of that lever. With the extra optical zoom, a change in the file size will result in a set zoom value. eg 8mp will give you 29.4X, 5mp will give you 37.5x. You can still zoom out further if you wish, by using the izoom, or digital zoom, but the picture will start to deteriorate pretty badly by then.

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Panasonic FZ200

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Ronomy
Ronomy Senior Member • Posts: 3,741
Re: FZ200 intelligent zoom

All of the zoom settings are a crop when you pass 24x. What happens with EZ zoom is the camera doesn't interpolate back to the resolution of the entire sensor. . Interpolation is a form of in camera post processing. You can do the same on your computer too. IZoom interpolates the cropped image back to the full sensor resolution size. If you shoot raw with IZoom turned on you get a cropped sensor image when zoomed greater than 24x.

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estero
estero OP Senior Member • Posts: 1,229
Re: FZ200 intelligent zoom

I remember reading that the camera does some internal processing. It is not just cropping.

Ronomy
Ronomy Senior Member • Posts: 3,741
Re: FZ200 intelligent zoom

I remember reading that the camera does some internal processing. It is not just cropping.

Correct! Like I said in IZoom it interpolates the cropped image back up to 12MP and also sharpens the image when you output jpgs. In RAW you get cropped raw files. No enhancement processing applied with RAW file output.

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Rodger1943
Rodger1943 Senior Member • Posts: 7,911
Re: FZ200 intelligent zoom

iHere is a comparison between izoom on the left and digital on the right. Both were taken on a tripod with a 2 second timer to help minimise any vibration. I can't see any difference between them. One is as good or as bad as the other. I also tested the same thing using extra optical zoom and these shots. The result is, as far as I can tell exactly the same.

izoom                                                                                   Digital zoom

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Panasonic FZ200

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Ronomy
Ronomy Senior Member • Posts: 3,741
Re: FZ200 intelligent zoom

Well they both interpolate.  Izoom uses ires where digital zoom does not.  Sometime I don't see the effects of ires yet other times i do.  Ires processing changes with each image.

I had originally thought digital zoom was a simple crop until it was pointed out to me a couple months back that it also interpolates back to 12MP.  So other than adding ires processing I don't see how IZoom is any different from digial zoom.  I guess your image proves that.

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Rodger1943
Rodger1943 Senior Member • Posts: 7,911
Re: FZ200 intelligent zoom

Ronomy wrote:

Well they both interpolate. Izoom uses ires where digital zoom does not. Sometime I don't see the effects of ires yet other times i do. Ires processing changes with each image.

I had originally thought digital zoom was a simple crop until it was pointed out to me a couple months back that it also interpolates back to 12MP. So other than adding ires processing I don't see how IZoom is any different from digial zoom. I guess your image proves that.

Thanks Ron. I ran the same test with the FZ150, (when I had it) and got a similar result. I have also compared these shots to just enlarging the 24x image and they all look the same. In practice, I tend to have the camera set at 8mp which allows me to zoom a bit closer (29.4x) and that helps me see that my subject (usualy a small bird) is in focus.

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Panasonic FZ200

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Ronomy
Ronomy Senior Member • Posts: 3,741
Re: FZ200 intelligent zoom

Rodger1943 wrote:

Ronomy wrote:

Well they both interpolate. Izoom uses ires where digital zoom does not. Sometime I don't see the effects of ires yet other times i do. Ires processing changes with each image.

I had originally thought digital zoom was a simple crop until it was pointed out to me a couple months back that it also interpolates back to 12MP. So other than adding ires processing I don't see how IZoom is any different from digial zoom. I guess your image proves that.

Thanks Ron. I ran the same test with the FZ150, (when I had it) and got a similar result. I have also compared these shots to just enlarging the 24x image and they all look the same. In practice, I tend to have the camera set at 8mp which allows me to zoom a bit closer (29.4x) and that helps me see that my subject (usualy a small bird) is in focus.

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Panasonic FZ200

So do you shoot in 8mp all the time now?  When I shoot greater than 24x zoom now using izoom I turn on RAW and process the raw image if I don't like the jpg.

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estero
estero OP Senior Member • Posts: 1,229
Re: FZ200 intelligent zoom

I noticed that Graham Houghton uses the 9m in most of his videos. I never knew why.

PC Wheeler
PC Wheeler Forum Pro • Posts: 16,030
Re: FZ200 intelligent zoom

estero wrote:

I noticed that Graham Houghton uses the 9m in most of his videos. I never knew why.

Maybe because his videos are 16:9?

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Phil

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Rodger1943
Rodger1943 Senior Member • Posts: 7,911
Re: FZ200 intelligent zoom

Ronomy wrote:

Rodger1943 wrote:

Ronomy wrote:

Well they both interpolate. Izoom uses ires where digital zoom does not. Sometime I don't see the effects of ires yet other times i do. Ires processing changes with each image.

I had originally thought digital zoom was a simple crop until it was pointed out to me a couple months back that it also interpolates back to 12MP. So other than adding ires processing I don't see how IZoom is any different from digial zoom. I guess your image proves that.

Thanks Ron. I ran the same test with the FZ150, (when I had it) and got a similar result. I have also compared these shots to just enlarging the 24x image and they all look the same. In practice, I tend to have the camera set at 8mp which allows me to zoom a bit closer (29.4x) and that helps me see that my subject (usualy a small bird) is in focus.

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Panasonic FZ200

So do you shoot in 8mp all the time now? When I shoot greater than 24x zoom now using izoom I turn on RAW and process the raw image if I don't like the jpg.

Hi Ron, yes I tend to use the 8mp size all the time now, as I did when I had the FZ150. I find it that as well as giving me some extra zoom, there is no noticeable loss of image quality.

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Panasonic FZ200

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Rodger1943
Rodger1943 Senior Member • Posts: 7,911
Re: FZ200 intelligent zoom

PC Wheeler wrote:

estero wrote:

I noticed that Graham Houghton uses the 9m in most of his videos. I never knew why.

Maybe because his videos are 16:9?

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Phil

That is the reason, if you set the camera to 16:9, then the image will be 9mp in size.

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Panasonic FZ200

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MoreGooderPhotos Contributing Member • Posts: 690
Re: FZ200 intelligent zoom

Most of my shots are of birds, since I'm an avid birder. I find that 16:9 ends up being cropped significantly in most shots since the bird is somewhere near the middle of the frame. I crop the image for framing and composition.

I find that using izoom really helps for birding.With, izoom, I can get as much of the animal in the frame as possible, and make sure the subject is in focus and not a branch or leaf in the foreground. I haven't tried ires yet, and don't see much point in it for birding frankly.

Oh, and let me just add this: Using my Nikon TC-E17ED 1.7X TC + izoom, max effective focal length is 600 *1.7* 4 = 4080mm. With image stabilization switched on I can focus on a bird hand held with pretty damn good results. It's simply amazing to me. If the bird is a spastic bird like a typical flycatcher it's usually not possible to get the shot. Lazy birds like Kingfishers and Herons, though, make great subjects for this mode.

If only the Nikon 1.7 TC wasn't so darn heavy.....

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Sometimes I feel like 2/3'rds Rice Krispies. Past "Snap" and "Crackle" but just shy of "Pop".

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MoreGooderPhotos Contributing Member • Posts: 690
Re: FZ200 intelligent zoom

MoreGooderPhotos wrote:

Most of my shots are of birds, since I'm an avid birder. I find that 16:9 ends up being cropped significantly in most shots since the bird is somewhere near the middle of the frame. I crop the image for framing and composition.

I find that using izoom really helps for birding.With, izoom, I can get as much of the animal in the frame as possible, and make sure the subject is in focus and not a branch or leaf in the foreground. I haven't tried ires yet, and don't see much point in it for birding frankly.

Oh, and let me just add this: Using my Nikon TC-E17ED 1.7X TC + izoom, max effective focal length is 600 *1.7* 4 = 4080mm. With image stabilization switched on I can focus on a bird hand held with pretty damn good results. It's simply amazing to me. If the bird is a spastic bird like a typical flycatcher it's usually not possible to get the shot. Lazy birds like Kingfishers and Herons, though, make great subjects for this mode.

If only the Nikon 1.7 TC wasn't so darn heavy.....

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Sometimes I feel like 2/3'rds Rice Krispies. Past "Snap" and "Crackle" but just shy of "Pop".

Oops.  I just need to reply to my own reply and correct something.  Apparently, when you switch on izoom you inadvertently also switch on ires, but the sharpening and noise reduction that ires performs only applies to the jpeg image (as you would expect).

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Sometimes I feel like 2/3'rds Rice Krispies. Past "Snap" and "Crackle" but just shy of "Pop".

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Ronomy
Ronomy Senior Member • Posts: 3,741
Re: FZ200 intelligent zoom

MoreGooderPhotos wrote:

Most of my shots are of birds, since I'm an avid birder. I find that 16:9 ends up being cropped significantly in most shots since the bird is somewhere near the middle of the frame. I crop the image for framing and composition.

I find that using izoom really helps for birding.With, izoom, I can get as much of the animal in the frame as possible, and make sure the subject is in focus and not a branch or leaf in the foreground. I haven't tried ires yet, and don't see much point in it for birding frankly.

Oh, and let me just add this: Using my Nikon TC-E17ED 1.7X TC + izoom, max effective focal length is 600 *1.7* 4 = 4080mm. With image stabilization switched on I can focus on a bird hand held with pretty damn good results. It's simply amazing to me. If the bird is a spastic bird like a typical flycatcher it's usually not possible to get the shot. Lazy birds like Kingfishers and Herons, though, make great subjects for this mode.

If only the Nikon 1.7 TC wasn't so darn heavy.....

-- hide signature --

Sometimes I feel like 2/3'rds Rice Krispies. Past "Snap" and "Crackle" but just shy of "Pop".

Oops.  I just need to reply to my own reply and correct something.  Apparently, when you switch on izoom you inadvertently also switch on ires, but the sharpening and noise reduction that ires performs only applies to the jpeg image (as you would expect).

-- hide signature --

Sometimes I feel like 2/3'rds Rice Krispies. Past "Snap" and "Crackle" but just shy of "Pop".

Izoom extends focal length by a factor of 2 so its a 2040mm equivalent. Resolution drops by a factor of 4. Max izoom crop is 3mp.

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tezaroamer New Member • Posts: 1
Re: FZ200 intelligent zoom

MoreGooderPhotos wrote:

Most of my shots are of birds, since I'm an avid birder. I find that 16:9 ends up being cropped significantly in most shots since the bird is somewhere near the middle of the frame. I crop the image for framing and composition.

I find that using izoom really helps for birding.With, izoom, I can get as much of the animal in the frame as possible, and make sure the subject is in focus and not a branch or leaf in the foreground. I haven't tried ires yet, and don't see much point in it for birding frankly.

Oh, and let me just add this: Using my Nikon TC-E17ED 1.7X TC + izoom, max effective focal length is 600 *1.7* 4 = 4080mm. With image stabilization switched on I can focus on a bird hand held with pretty damn good results. It's simply amazing to me. If the bird is a spastic bird like a typical flycatcher it's usually not possible to get the shot. Lazy birds like Kingfishers and Herons, though, make great subjects for this mode.

If only the Nikon 1.7 TC wasn't so darn heavy.....

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Sometimes I feel like 2/3'rds Rice Krispies. Past "Snap" and "Crackle" but just shy of "Pop".

Thank you very much for this info re extending optical zoom. I also llike to photograph birds so will try out your suggestions

Fred McLean
Fred McLean Regular Member • Posts: 212
Re: FZ200 intelligent zoom

I shoot raw with izoom on and have found it ideal to ensure that the subject can fill the frame for a better focus.  My vision is not perfect so it helps me make sure of what the focus is on.  I find it very useful for certain shots.

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Regards.
Fred (Essex, UK).
See profile details for equipment.
http://www.flickr.com/photos/fred_bear/

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