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14

You can use ImageMagick: convert original.tif -define jpeg:extent=9MB output.jpg And quoting one of the comments: IrfanView will allow you to do it, for those on Windows who are afraid of the command line


13

Late Edit Let me qualify this 'simple' solution by saying that such as LinkedIn, same as any other social media site, will not care a jot what size an image is, so long as it falls over and under certain sizes in [mega]bytes [& possibly over or under a certain size in pixels]. They're not photographers or graphic designers, their interest is simple ...


12

sRGB is the STANDARD So stick with sRGB, it is the STANDARD for web content. I fail to see any reasons to not use Adobe RGB when it comes to JPEG files whatever you are posting them on web sites or simply looking at them in your PC... The REASON is as stated: sRGB is the DEFAULT STANDARD for all web content, not AdobeRGB. Don't use AdobeRGB for web ...


11

TIFF is a container format which supports a collection of other standards and like any container what's in it will be entirely down to what you (or whoever wrote the TIFF export you're using) has decided to put in it. At a guess from the file size your converter has gone to 16bpc/RGB uncompressed. If so then that file size looks about right. If it is ...


8

The question here really resolves around what you mean by "quality", followed closely by needing to understand what RAW really is and how it relates to other image formats. On the first TIFF is generally not compressed in a lossy way, so artifacts weren't introduced. By that measure, quality isn't degraded in the same way it might be with JPEG (and ...


7

Well, first, the image will be demosaiced, white and black levels set, white balance adjusted, and a tone curve applied. With 16 bits to play with, most of this can be adjusted later without much problem — but it is lossy. The demosaicing is irreversible. None of this is metadata, but it is important to know. See more at What is lost when RAW is exported to ...


6

I don't know how you added the exif data, but it could very well be that the application you used for this recompressed the file, and not with jpeg compression. Windows explorer recompresses a jpeg-tiff as LZW if you edit the metadata, you can see that in the file properties/details tab. Anyway, if you don't like the size of a jpeg exported from a raw file, ...


6

If you are asking about "print shops" in the sense of printing brochures, and other primary text-based material, then yes, I can understand that they only accept PDF: they want the most precise layout possible for text-based layouts (so-called "camera-ready": they can feed your PDF straight into their workflow, generating offset plates from the pages you ...


6

The only two viable options in the list are JPEG and TIFF. JPEG is fine for lossy compression, 8-bit/channel color, and smaller file sizes. I would use JPEG for paper originals that will not be heavily edited. TIFF supports 16-bit/channel images with lossless compression that can hold up better against extensive editing, but files tend to be very large. I ...


5

The reasons why 8 bit TIFF is acceptable are: raw files are typically linear and most used profiles (including AdobeRGB, sRGB, ProPhoto and whatnot) use gamma-encoding. Read more about it here. 8 bit gamma 2.2 encoding is roughly same as 16 bit linear when taking human vision as a reference debayered/demosaiced image is having redundant information compared ...


5

The only advantages to saving your RAW files as 8-bit is for memory conservation or if certain tools only work with 8-bit images. There is no advantage from a quality point of view, if you're going to do a lot of editing especially in a wide colour space then you may get posterisation when working with only 8 bits. Regarding colour spaces, it is advisable ...


5

The comments have really answered the question here: The behaviour you're seeing is as you should expect. The settings for adjustment layers alone have no equivalence in any of the TIFF content standards. TIFF does allow for vendor specific extensions and this would be an example of one but saving to a nonstandard TIFF would be pointless if nobody could ...


5

It is possible and even trivial but I am not aware of any application to do that task specifically. There reason why the file size changes when rotated is that TIFF files are encoded losslessly as one would compress a stream of pixels components from one corner of the image to the opposite one. If you consider Run-Length-Encoding (RLE) which a common TIFF ...


5

The 16-bits used to record raw data and the 16-bits (per color channel) used to record a demosaiced and gamma corrected TIFF or PSD are not used to represent the same exact thing in the same exact way. Expecting a 16-bit TIFF to be the same as a 16-bit raw file is a bit like expecting a 16-bit WAV audio file to be the same as a 16-bit WMA file. They both ...


5

If you run the file through ExifTool, you'll see that it contains a huge number of Document Ancestors elements: Document Ancestors : 0, 0000A6C7815905497C2762FB3073AC1B, ... ... Warning : [Minor] Extracted only 1000 photoshop: DocumentAncestors items. Ignore minor errors to extract all If you remove all EXIF data (...


4

Basically, a RAW file stores data directly from the sensor of your camera. Most DSLR are using what is called a Bayer filter (https://en.wikipedia.org/wiki/Bayer_filter) to retrieve information about color. Usually, for 4 "pixels" (sensitive elements), 2 are used to get information about green, 1 for red and 1 for blue. However, keep in mind that this sensor ...


4

For the fastest save times you want to go with no compression. Adding compression can multiply the time required to save a TIFF by 5x on 16-bit TIFF files and by 10-15x on 8-bit TIFF files. Storage is so cheap these days that the time to save files can be more costly than the cost of adding additional storage, especially with 16-bit files where you're only ...


4

Compression is something you can see yourself, so I'll focus on interoperability and long-term preservation. The EU's Succeed 2014 Recommendations for metadata and data formats for online availability and long-term preservation recommend "Uncompressed or LZW compression" for TIFF masters (p. 68) and note that «If files are actively managed in a digital ...


4

DPI is meaningless in an electronic image, it's a print specific value, see What does DPI mean? In an electronic image, DPI is just metadata, a "hint" for the print. Specifically, changing that value has no effect on file size, only representation on paper or in a WYSIWYG page editing software. What you care for for an email newsletter or website are the ...


4

There are basically three important time stamps in there, the Date/Time Original, the Create Date, and the Modify Date. The ones near the start are important. The ones near the end would be in the Composite group, tags that exiftool creates based upon the values of other tags, so those can be ignored. All three of these time stamps would be exactly the ...


4

For me the benefits can be: less disk space (compressed data) less time to load (but plus time to decompress) same for write But I will have in mind few negative points: compatibility, it's possible not all programs understand this TIFF format and can load it one (of few) bit error(s) can ruin most of the image (because of the compression string) disk/...


4

Don't convert - at all. At import tell it not to convert. At export tell it not to convert. sRGB IEC61966-2.1 is "industry standard" RGB used for the web. Any time you do colour-space conversion you potentially change the colour balance. If you don't have a fully calibrated system this can make changes you can't even see or know about. Preserving ...


3

RAW files are 12 ~ 14 bits. I'm pretty sure he knows that. Why an 8 bit TIFF? This was a given for him, so I'm puzzled. The higher bit depth is certainly safer for major corrections of exposure, contrast etc. I would especially be cautious when using ProPhoto RGB that may have tendency to posterization in 8 bit. But 8 bit may be enough for his type of ...


3

There is no real "DPI" in a photo. Inches of what? If it's a macro photography you can have tens of thousands of pixels for one inch of real life object, while pixels in Hubble images can be megaparsecs apart. Which is why cameras don't set the print definition in their JPEGs (when you see 72DPI it is just a default value, that corresponds to the definition ...


3

When you view the image with a normal image viewer, is it mostly dark? If not, a gamma curve has been applied. That is, does it look like this? That's what you'll get with a pure dump of linear values into a 16-bit tiff file. Or, encoded across 8 bits, and demosaiced, and with white-balance adjusted, something like this: If it looks like that or similar, ...


3

Adobe RGB is converted to sRGB in cheap monitors right? Not always. A lot depends on whether the color profile is properly embedded in the image file and whether or not the rendering application pays attention to the embedded color profile instead of automatically rendering in sRGB. Even when Adobe RGB is converted to sRGB, the colors both spaces have in ...


3

Programs normally offer LZW compression for TIFF image files, which is 100% lossless. You should first make sure that your program that opens and views them can handle opening LZW compression (try one first), but LZW is very common for images. Document files (text page archives, and fax) typically use TIFF with one of the CCITT compressions, also lossless,...


3

The differences you see are caused by different interpolation algorithms used by the viewers you're using when showing images at greater than 100% magnification. Some interpolation algorithms have a smoothing effect (bicubic), while others can cause aliasing (bilinear, nearest neighbor). The images are also displayed with slightly different magnification, ...


3

At least in theory, the TIFF file format can handle bigger images. Here's a quote from a technical description of the file format: The ISO JPEG standard only permits images up to 65535 pixels in width or height, due to 2-byte fields in the SOFn markers. In TIFF, this limits the size of an individual JPEG-compressed strip or tile, but the total image size ...


3

Did you save it with Layers? Photoshop will save layers to tiff even if they are switched off in the app. You must either delete the layers if you never need them back [or are not going to save the entire PSD], or switch off Layers in the Save dialog. Layers will be on by default if the Photoshop document contains multiple layers, or off [& greyed out] ...


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