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[OM] Re: Noise reduction

Subject: [OM] Re: Noise reduction
From: Stuart Robinson <restmengi@xxxxxxxxx>
Date: Fri, 08 Dec 2006 13:18:42 +0000
It states on the pdf manual that the demo loses its exif.

Stu

Chuck Norcutt wrote:
> I meant to suggest that you should check the help file for mention of 
> EXIF.  You may find that preserving EXIF is an option.  I never paid any 
> attention to that since I was only cleaning up film scans which had no 
> EXIF data.
>
> Chuck Norcutt
>
> Chuck Norcutt wrote:
>
>   
>> Check the dimensions of the image.  You'll probably find the number of 
>> pixels is still the same.  My guess is that by reducing the amount of 
>> noise you've reduced the information content of the image and a JPEG 
>> compression can be more efficient.
>>
>> Chuck Norcutt
>>
>> Stuart Robinson wrote:
>>
>>
>>     
>>> Amazing. In the half  hour since you posted this, I've downloaded Neat 
>>> Image & had a play with one image. The difference is remarkable! One 
>>> thing though & I don't know if this happens on the full version is, my 
>>> original image was 3.44MB after filtering it became 1.06MB. It also 
>>> loses it's exif data, that's easy to get around by backing it up first 
>>> with Exifer. Why though has the file shrunk?
>>>
>>> Stu
>>>
>>> Chuck Norcutt wrote:
>>>
>>>
>>>       
>>>> I think the two major contenders are Neat Image and Noise Ninja.  These 
>>>> reviews are a couple of years old and I would suspect that, 
>>>> technologically, they're probably equal.  At the time of the reviews 
>>>> both were only available as stand alones but I would guess they're 
>>>> probably available as PS plug-ins by now.
>>>>
>>>> I have old, freebie versions of both and I preferred Neat Image but I 
>>>> haven't done any serious film scanning in a long time which is where it 
>>>> was really needed.  VueScan incorporates grain/noise reduction in its 
>>>> filter menu but I've never used that part of VueScan since it was added. 
>>>> I keep the Min*lta A1 at ISO 100 95% of the time so there is really no 
>>>> need for noise reduction there.  I've taken a few ISO 3200 shots with 
>>>> the 5D but have never had to print anything large taken at that speed 
>>>> and haven't been driven to clean any images.
>>>>
>>>> <http://www.luminous-landscape.com/reviews/software/noise-ninja.shtml>
>>>> <http://www.luminous-landscape.com/reviews/software/neatimage.shtml>
>>>>
>>>> Fred Miranda also has noise reduction plug-in software that works on 
>>>> scanned film or JPEGs or raw files right out of the camera for only $20. 
>>>> Sounds useful and inexpensive but I don't know anything else about it.
>>>> <http://www.fredmiranda.com/shopping/Xpro>
>>>>
>>>> Picture Window Pro also has noise reduction as part of the "advanced 
>>>> sharpen" function but I've never use the noise reduction part.
>>>>
>>>> Chuck Norcutt
>>>>
>>>>
>>>>
>>>> Phil wrote:
>>>>
>>>>
>>>>
>>>>
>>>>         
>>>>> Do any you guys have any experience with noise reduction programs
>>>>> Would appreciate any guidance
>>>>>
>>>>> Thanks
>>>>>
>>>>> Phil
>>>>>
>>>>>
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>>>       
>>
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>>
>>     
>
>
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>   

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