Additional technical information

All images are delivered in electronic format. That is, a file that will be either emailed to you or it will be downloaded from a server if too big to fit your mailbox. In this case you will be provided with instructions on how to download the file(s).
Images are delivered in the JPEG format at the resolution and size you buy

Although I am proficient with (and like) 4x5 (inch) studio camera, 6x6 (cm) and sub 35 mm I usually work now with 35 mm Kodak film (both slide and negative).

Scanning is made with a 4000 dpi resolution scanner, so a typical 35mm slide will provide a resolution of approximately 5400x3700 pixels which is a +20 Megapixels image.
Embedded color space is Adobe RGB, but you can easily convert it to what suit you best. Much used is sRGB (it is the default color space of many cameras, scanners, assorted graphic equipments and even some monitors) which has however a smaller gamut. Images are delivered in RGB . If you intend to use them in print they need to be converted to CYMK. This conversion needs detailed knowledge of your specific printing process to be made properly. I can however (and you can also) convert the RGB to CYMK in Photoshop (or other graphic software) to some default CYMK setting like U.S. Sheetfed Coated v2, or whatever.

Since is wise to scan the picture only once, the scanning is done at 4000 dpi , 16 colors per channel (48 bits) and saved in TIFF (losless) format. This yields (from a 35 mm slide) a file that is over 100 MB in size. This workflow is for archival purpose only.

You will get a much smaller file since after all color adjustments are made, colors are reduced to 8 per channel (24 bits) which is the standard operating mode of Photoshop and the JPEG standard too. The JPEG standard use 8 bits per channel (24 bits) and that is what even digital professional cameras deliver in JPEG even if the camera itself handles a bigger color bit resolution.
A bigger color bit resolution is useful only if you need massive or at least significant color correction. Once done you can drop down to 24 bits with almost no inconvenience.

In the unlikely (all big or significant color adjustments has already been made in 48 bit mode before converting the image to 24 bit JPEG) case you need a higher color bit resolution I can give it to you. Just notice that it will cost you twice and the file is twice as big. You will also need a software (like a Photoshop plug in) capable of handling the JPEG2000 standard which is able of handling images with 48 bits color depth. If you do not understand what this "color bit resolution" thing is, chances are that you do not need to bother with it at all. Just forget it.

The file is also adjusted for the size and resolution you need. Generally speaking the files you get are a few MBytes.

 
© Claudio Baldini
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