Conversion of an old jpg file? (Page 2): Actually whether it be JPEG, TIFF, DNG, raw or any other format the image you see is a graphic rendering of the contents of the file. Contrary...

SuperflyTNT Loc: Manassas VA

Longshadow wrote:

img src="https://static.uglyhedgehog.com/images/s... (show quote)

Actually whether it be JPEG, TIFF, DNG, raw or any other format the image you see is a graphic rendering of the contents of the file. Contrary to popular belief on here raw files ARE image files, but they are proprietary image files that require specialized software to view. The difference is JPEG and TIFF are standards and the code to render them is baked into web browsers and operating systems include apps to open them.

Longshadow Loc: Audubon, PA, United States

SuperflyTNT wrote:

Actually whether it be JPEG, TIFF, DNG, raw or any other format the image you see is a graphic rendering of the contents of the file. Contrary to popular belief on here raw files ARE image files, but they are proprietary image files that require specialized software to view. The difference is JPEG and TIFF are standards and the code to render them is baked into web browsers and operating systems include apps to open them.

By technical definition, they're ALL "image" files.
And they're all just data.

User ID

lamiaceae wrote:

If quality is the issue and you want to spend the time and cost. Have a high quality large, say 8x12, 10x15 or 16x24 inch print made and then photograph it with your Nikon camera on full resolution RAW. Now you will have a RAW file of your image. You may need advice for the copy work as well. What equipment do you have? Macro or other prime lenses, tripod, etc.

ROTFLMFAO

This whole thread is BS “advice” about doing nothing worth doing. Pure UHH. But credit where it’s due, yours is the winner. Congratulations, champ !

I really think the OP should take your advice and provide to the club a camera raw file, as required. It will contain so little data as to be nearly useless, and certainly much worse than working from the jpeg, but it does meet the specified requirement of a raw file. After all, it’s only a hobby and hobbies should be fun.

Part of that fun will be the exif info. If the printed image has typical f:2.0 portrait DoF and the copy lens is set to f:11, then award a stale donut and cold weak coffee to the first clubber who announces the obvious discrepancy.

Also, if it’s a daylight photo, light the print with hot lights and manually set appropriate WB. Have another cold coffee and stale donut ready for that rotten Easter egg.

PaulBrit Loc: Merlin, Southern Oregon

Thank you to all! Of course, the obvious way forward as suggested by many, is to display the jpg image on my iMac, take a photograph of that with my Nikon, and then we have the RAW file. Duh! I should have thought of that before posting my query!
(Now washed and dressed and fully awake; or as awake as a 76-year-old can be!)

R.G. Loc: Scotland

My guess is that Jim is assuming you have a raw version as well as the jpg. If the jpg is the only version that you have, you can't make the raw version from it and you'll have to tell Jim that you shot jpg only. The jpg isn't quite as good as the raw for editing but there are no compatibility issues with jpg. Every editor will be able to edit it.

PaulBrit Loc: Merlin, Southern Oregon

R.G. wrote:

My guess is that Jim is assuming you have a raw version as well as the jpg. If the jpg is the only version that you have, you can't make the raw version from it and you'll have to tell Jim that you shot jpg only. The jpg isn't quite as good as the raw for editing but there are no compatibility issues with jpg. Every editor will be able to edit it.

I am now at my desk and will load the photograph into DxO and see if I can edit it?

R.G. Loc: Scotland

I can't think of any reason why not. The fact that it's from an old camera doesn't matter.

bsprague Loc: Lacey, WA, USA

Lightroom Classic: Select the JPEG, right click Export, set Location, pick a Name, pick File Setting/Image Format as DNG, (resizing is grayed out!) and press the Export Button.

The displayed image is the JPEG. Since you can't display the DNG here on UHH, the "Attached file" is the DNG.

I have no idea what Jim might be thinking, but it would be fun to humor him! Give him what he wants.

(Download)

Attached file:
(Download)

PaulBrit Loc: Merlin, Southern Oregon

PaulBrit wrote:

I am now at my desk and will load the photograph into DxO and see if I can edit it?

And, yes, I can!

But it is a small image.

(Download)

PaulBrit Loc: Merlin, Southern Oregon

This is my dog Pharaoh sitting in the back of my Piper Cub. Taken in 2006. Pharaoh was very relaxed and I thought long and hard about doing a circuit or two. But in the end I decided, for safety, not to go flying! The consequences if Pharaoh had become agitated did not bear thinking about!

Ysarex Loc: St. Louis

Bayou wrote:

https://topazlabs.com/jpeg-to-raw-ai/

Not cheap, and surely not ideal, but it can be done.

It cannot be done. Topaz labs lies to ignorant people in an attempt to make money -- duuuh. From their own website:
"The ability to save DNG files from JPEG is one of the primary features of JPEG to RAW AI, and it's important to know exactly what kind of DNG file will be produced! When you process your image through this software, you'll find that we do not provide options for the kind of DNG you end up with. DNG is an abbreviation that stands for "Digital Negative", and is a patented, open lossless raw image format that was created by Adobe way back in 2004. We leverage the DNG format to provide all the benefits of JPEG to RAW AI, more specifically, Linear DNG."

Topaz JPEG to Raw outputs a Linear DNG. "Linear" as an adjective to describe a particular type of DNG file is short for "contains demosaiced RGB image data and not raw data."

R.G. Loc: Scotland

PaulBrit wrote:

.....it is a small image.

Check to make sure you're exporting at 100% quality and without any size restrictions. A 5MP sensor should give larger files than that - unless you had it set for small file sizes (lowest quality) in-camera.

Longshadow Loc: Audubon, PA, United States

Ysarex wrote:

It cannot be done. Topaz labs lies to ignorant peo... (show quote)

It's all in the marketing......

DirtFarmer Loc: Escaped from the NYC area, back to MA

A dng file can be produced from a jpg. The dng is basically just a container, but it has a reputation as a raw file.
Since your caveman thinks it's possible to produce a raw from a jpg, convert to dng and present that to him.

Of course you can edit a jpg, you just have less leverage than you would have had with a raw file. The same will be true of a dng made with a jpg.

But let him have fun with it.

CHG_CANON Loc: the Windy City

Tell the local caveman to find a left-handed monkey wrench and leave off similar fool's errands like creating RAW files from JPEGs.