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Photo Restoration Repairing damaged photos

Process on restoring this picture?

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  #1  
Old 11-16-2011, 03:20 PM
vermit vermit is offline
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Process on restoring a picture?

Will be using photoshop.
need to blow it up to 24x36 for print once done.

Thanks

Last edited by vermit; 11-17-2011 at 07:49 AM.
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Old 11-16-2011, 04:45 PM
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Tony W Tony W is offline
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Re: Process on restoring this picture?

That is going to be big if the measurement is inches! Do you think it will stand the size increase? Consider sizing first to final image requirements.

If you work on it too small when you come to enlarge you will also enlarge any imperfections that you may not notice both with your restoration and other artefacts
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Old 11-16-2011, 04:57 PM
vermit vermit is offline
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Re: Process on restoring this picture?

I agree that the size enlargement is drastic.
Its currently at 4"x6".
I scaled it to 12x18" to do a test print, which had no noticible pixilation in the print.
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Old 11-16-2011, 05:20 PM
Siciliana Siciliana is offline
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Re: Process on restoring this picture?

Overall, the photo is in good condition. You can fix the tears with cloning and healing. The picture will benefit from a levels or curves adjustment to improve the contrast.

To begin with, talk to the vendor about what the requirements are for the resolution of the file for a good quality print from their device. From there you can determine what resolution to scan your photo at. You are much better off scanning in a large file, then trying to extrapolate up with software for enlargement at the end.
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Old 11-16-2011, 05:27 PM
Siciliana Siciliana is offline
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Re: Process on restoring this picture?

So it sounds as if you may be printing on your own printer. I have had decent results (maybe not so sharp, but OK to be viewed at a distance) when printing photos on posters (for funerals, elections, etc) at a resolution of 150. Some printers actually cannot print at 300 dpi and print at a lower resolution, so that is why it is good to understand the output device. If you have a scanner that scans negatives, you can scan at very high resolutions. Scanning a 4x6 at a resolution of 1800 will give you the ideal resolution of 300 ppi, but obviously, if you can't swing that, you can scan at a resolution of 900 for a resolution of 150. I wouldn't recommend going much lower.

The only problems will be that if you do not have enough computing power the large file can bog it down. One solution is to apply your levels or curves correction and then crop the file in half, to work on each half separately.
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Old 11-16-2011, 06:55 PM
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Re: Process on restoring this picture?

So you are going to increase image size from 4x6 to 24x36 an increase of 600%!

Due to this increase you should IMO attempt to scan at the highest ppi your scanner supports optically. It is probably worth testing where the point is that your scanner does not give any noticeable increase in detail and settle on that as your optimum

You have done a trial at 300% increase which looks ok (you should really do a trial at the final size-select a portion with the most detail). Pixelation should not be an issue as you can choose the appropriate pixel size. The problem is likely to be loss of resolution from the original print to the new size and as mentioned your editing may show up the larger you make the image from your editing/working size.

You should IMO really be seeking to find out the expectations of the customer about quality and discuss print viewing distance.

Conventional wisdom suggests that the correct viewing distance for a print should be around 2 times the diagonal of the print. Most photographers (I think) prefer to multiply the diagonal by 1.5. These figures are based on viewing the entire image.

So taking your example of a 24”x36” and multiplying the diagonal by 1.5 gives a ‘correct' viewing distance of 65”

The figures listed below are from DigitalWorkflow group and are intended to give an idea of the maximum resolution at various viewing distances. This is for high contrast and optimal lighting and not for your average wall hung photo. It is suggested that these figures could be halved for average to poor viewing conditions
Viewing Distance (inches).............. Resolution ppi
10..................................................687
24 .................................................286
36 .................................................191
60 .................................................115
120 ................................................ 57

So assuming that this is going to go in a really well lit area the suggested resolution for print is approx 115 ppi when viewed at 60".

The biggest problem you are likely to face is the customers expectation of a super sharp print at this size when viewed from 10" away. This is why I suggest getting a clear idea of their expectations and if needed talk them down to size
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