Scan in Tiff, cannot save in JPEG

Would it by any chance be 16 bit instead of 8 bit?

"Celcius" wrote in message

Hi!
I solved my previous post re "Bridge won’t stay open". Thanks. Now I have another problem, and I don’t know whether it’s linked to the first.
I scanned a number of photos in Tiff.
I "Photoshopped" them and tried to save as JPEG to no avail. The only possibilities offered are: Tiff and Photoshop related files (PSD, PNG, Pdp, PdP, Raw).
I checked "layers" but they’re already flattened (actually, there were never any).
I may have an idea. These photos were scanned in Gray / 16. I have to revert to Irfanview to save them in Jepg.
Is it because they were scanned in gray that I can’t save them as Jpeg or do you have any other idea?
Thanks,
Marcel

"CraigM" wrote in message

Would it by any chance be 16 bit instead of 8 bit?

"Celcius" wrote in message

Hi!
I solved my previous post re "Bridge won’t stay open". Thanks. Now I have another problem, and I don’t know whether it’s linked to the first.
I scanned a number of photos in Tiff.
I "Photoshopped" them and tried to save as JPEG to no avail. The only possibilities offered are: Tiff and Photoshop related files (PSD, PNG, Pdp, PdP, Raw).
I checked "layers" but they’re already flattened (actually, there were never any).
I may have an idea. These photos were scanned in Gray / 16. I have to revert to Irfanview to save them in Jepg.
Is it because they were scanned in gray that I can’t save them as Jpeg or do you have any other idea?
Thanks,
Marcel

Right on, Craig!
Thanks!
I changed it to 8 bit and I could save in JPEG!
What’s the merit saving in 16 bit, then? Is it the quality? Thanks,
Marcel

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Celcius wrote:
| "CraigM" wrote in message
| |> Would it by any chance be 16 bit instead of 8 bit? |>
|> "Celcius" wrote in message
|> |>> Hi!
|>> I solved my previous post re "Bridge won’t stay open". Thanks. |>> Now I have another problem, and I don’t know whether it’s linked to the |>> first.
|>> I scanned a number of photos in Tiff.
|>> I "Photoshopped" them and tried to save as JPEG to no avail. |>> The only possibilities offered are: Tiff and Photoshop related files |>> (PSD, PNG, Pdp, PdP, Raw).
|>> I checked "layers" but they’re already flattened (actually, there were |>> never any).
|>> I may have an idea. These photos were scanned in Gray / 16. |>> I have to revert to Irfanview to save them in Jepg. |>> Is it because they were scanned in gray that I can’t save them as Jpeg or
|>> do you have any other idea?
|>> Thanks,
|>> Marcel
|>>
| Right on, Craig!
| Thanks!
| I changed it to 8 bit and I could save in JPEG!
| What’s the merit saving in 16 bit, then? Is it the quality? | Thanks,
| Marcel
|
|
16 BIT has more colour information. It doesn’t matter much when you print to an inkjet printer but it matters to fussy photographers. TIFF is uncompressed data – none is discarded during save like with JPEG.

Unless you have a really super duper scanner, scanning in 16 bit mode is probably overkill. The native resolution of an average film is about 3200 lpi (dpi). so if you figure out the resolution of a print you intend to scan based on that origin, you can work out the best scanning resolution for it. More is definitely not better!

Usually 240 dpi is quite sufficient for most scans of photos at 1:1 ratio. It is also a handy resolution for printing to an inkjet. I hope this helps you improve your scanning knowledge.

– —

from Douglas,
If my PGP key is missing, the
post is a forgery. Ignore it.
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"Alienjones" wrote in message

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Celcius wrote:
| "CraigM" wrote in message
| |> Would it by any chance be 16 bit instead of 8 bit? |>
|> "Celcius" wrote in message
|> |>> Hi!
|>> I solved my previous post re "Bridge won’t stay open". Thanks. |>> Now I have another problem, and I don’t know whether it’s linked to the
|>> first.
|>> I scanned a number of photos in Tiff.
|>> I "Photoshopped" them and tried to save as JPEG to no avail. |>> The only possibilities offered are: Tiff and Photoshop related files |>> (PSD, PNG, Pdp, PdP, Raw).
|>> I checked "layers" but they’re already flattened (actually, there were |>> never any).
|>> I may have an idea. These photos were scanned in Gray / 16. |>> I have to revert to Irfanview to save them in Jepg. |>> Is it because they were scanned in gray that I can’t save them as Jpeg or
|>> do you have any other idea?
|>> Thanks,
|>> Marcel
|>>
| Right on, Craig!
| Thanks!
| I changed it to 8 bit and I could save in JPEG!
| What’s the merit saving in 16 bit, then? Is it the quality? | Thanks,
| Marcel
|
|
16 BIT has more colour information. It doesn’t matter much when you print to an inkjet printer but it matters to fussy photographers. TIFF is uncompressed data – none is discarded during save like with JPEG.
Unless you have a really super duper scanner, scanning in 16 bit mode is probably overkill. The native resolution of an average film is about 3200 lpi (dpi). so if you figure out the resolution of a print you intend to scan based on that origin, you can work out the best scanning resolution for it. More is definitely not better!

Usually 240 dpi is quite sufficient for most scans of photos at 1:1 ratio. It is also a handy resolution for printing to an inkjet. I hope this helps you improve your scanning knowledge.

– —

Thanks Douglas.
I knew with colour, but I seldom scan in gray. I was given the choice between 16 and 8… chose 16 for a better rendition ;-)))) Marcel

There isn’t much merit in scanning at 16 bit unless you have an output device with a huge color gamut. An 8 bit RGB has 16.8 million colors (the most a monitor can reproduce) and a 16 bit has 281.5 trillion colors. The one advantage of scanning or switching temporarily to 16 bit is if you are making large or repeated changes in luminosity or color balance that would normally produce posterization in 8 bit images.

"Celcius" wrote in message

"CraigM" wrote in message

Would it by any chance be 16 bit instead of 8 bit?

"Celcius" wrote in message

Hi!
I solved my previous post re "Bridge won’t stay open". Thanks. Now I have another problem, and I don’t know whether it’s linked to the first.
I scanned a number of photos in Tiff.
I "Photoshopped" them and tried to save as JPEG to no avail. The only possibilities offered are: Tiff and Photoshop related files (PSD, PNG, Pdp, PdP, Raw).
I checked "layers" but they’re already flattened (actually, there were never any).
I may have an idea. These photos were scanned in Gray / 16. I have to revert to Irfanview to save them in Jepg.
Is it because they were scanned in gray that I can’t save them as Jpeg or do you have any other idea?
Thanks,
Marcel

Right on, Craig!
Thanks!
I changed it to 8 bit and I could save in JPEG!
What’s the merit saving in 16 bit, then? Is it the quality? Thanks,
Marcel