Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ

A few questions on JPEG quality, TIFF Capture

Johannes Baiter's Spreads and SpreadPi are the latest control systems and postprocessors for DIY scanning. http://spreads.readthedocs.org
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masterfurda
Posts: 4
Joined: 20 Feb 2015, 09:25
E-book readers owned: playbook
Number of books owned: 150
Country: USA

A few questions on JPEG quality, TIFF Capture

Post by masterfurda » 25 Feb 2015, 12:10

Now that I have Spreads GUI installed and running (On a clean Lubuntu 14.04 system thanks to the guide posted here), I have a few questions to tweak my process.

1) How does one force Spreads to capture in TIFF format? Is it a configuration in the camera's CHDK settings?
2) Is it possible to adjust the JPEG compression and/or quality options?

Thanks!

masterfurda
Posts: 4
Joined: 20 Feb 2015, 09:25
E-book readers owned: playbook
Number of books owned: 150
Country: USA

Re: A few questions on JPEG quality, TIFF Capture

Post by masterfurda » 26 Feb 2015, 09:42

I figured out that my cameras, Canon A2500s, have settings in the menu to override the quality settings, so that seems to have bumped up the quality a notch. If anyone is wondering, it is in the Enhanced Photo Operations menu and is labeled Override JPEG Quality.

peterZ
Posts: 16
Joined: 16 Jun 2013, 06:13
Number of books owned: 10000
Country: Australia

Re: A few questions on JPEG quality, TIFF Capture

Post by peterZ » 07 Nov 2015, 23:00

can you save as RAW

If so they could be converted to TIFF

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