RIDUCE IL FORMATO DELLE MIE IMMAGINI ANCHE SE NON LO RICHIEDO!

[davider54929807]

Buongiorno,

Quando esporto da Lightroom CC un file esso risulta essere compresso nelle dimensioni in cm e in dpi (sopratutto in .Tiff).

Peso del file in MB, dimensioni in Pixel invece rimangono inalterate.

Ho controllato tutte le impostazioni possibili, non ho attivato nessuna compressione o ritaglio del file.

E' urgente, chiedo cortesemente assistenza.

Grazie 

[Per Berntsen]

When I export from Lightroom CC a file is compressed in cm and dpi (especially in . Tiff).

File weight in MB, size in pixels instead remain unchanged.

I checked all possible settings, I did not activate any compression or cropping of the file.
It is urgent, I kindly ask for assistance.

By @davider54929807

Please post a screenshot of the Export dialog, and make sure that File settings and Image sizing are expanded and visible.

[davider54929807]

Ciao,

Grazie per la tua risposta.
Invio le fotografie richieste.

[Per Berntsen]

I see that the original is 4928 x 3248 pixels.

Since you have not checked Resize to fit, the tiff file should also have these pixel dimensions.

If the original is 16-bit, the file size of the exported tiff will be reduced by 50%, because it is 8-bit.

The English translation of your original post is unclear, so please explain in detail what you expect to happen, and what actually happens.

[davider54929807]

Ciao,

Il file. Nef è stato scattato nativamente a  8 Bit, non credo sia quello il problema.

Attualmente credo di aver risolto in questo modo: Sostituendo La voce Pixel per cm con Pixel per pollice.

Però non capisco come mai allora le immagini comunque hanno lo stesso peso e la stessa dimensione in pixel.

[Per Berntsen]

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@davider54929807 wrote:

The file. Nef was taken natively at  8 Bit, I don't think that's the problem.

Currently I think I have solved it like this: Replacing the entry Pixels per cm with Pixels per inch.

But I do not understand why then the images still have the same weight and the same size in pixels.

So the tiff image in the background is not the file you exported from, but you exported from a NEF, is that correct?

You have not checked Resize to fit in the Export dialog, so the pixel dimensions of the exported file will be the same as the original.

The PPI value (or PPCM) does not affect file size or pixel dimensions, unless you check Resize to fit, and enter physical dimensions. PPI/PPCM is optional metadata used by printer drivers to calculate printed dimensions.

Pixel dimensions divided by PPI (pixels per inch) = Printed dimensions in inches.

Pixel dimensions divided by PPCM (pixels per cm) = Printed dimensions in centimeters.

An 8-bit tiff file measuring 4928 x 3248 pixels will be 45.8 MB.

What are the pixel dimensions and file size of the NEF file?

An 8-bit uncompressed tiff will have a file size approximately three times larger than the raw file they were exported from - if the raw file is compressed. 

Raw files are usually either 12 or 14-bit, never 8-bit. But they are one channel greyscale files, whereas a tiff has three channels (RGB). This explains why the raw files are much smaller.

[davider54929807]

Buonasera,

Il file originale di partenza è un file Nef. che pesa 16,2 MB ed è stato scattato con 8 Bit nativi senza successive modifiche.

Il file tiff è già il mio export post-prodotto che pesa 45/46MB (Non ha nessun tipo di compressione o di ridimensionamento anche i pixel sono gli stessi 4928 x 3248).

L'unica modifica apportata è stata scegliere pixel per pollice e non pixel per centimetro durante l'export in Tiff mettendo 300dpi e non 240 di default!

Profilo RGB98 senza compressioni e 8 Biot canale.

[Per Berntsen]

The original source file is a Nef file. which weighs 16.2 MB and was shot with 8 Bit native without subsequent editing.

The tiff file is already my post-product export that weighs 45/46MB (It does not have any type of compression or resizing even the pixels are the same 4928 x 3248).

The only change made was to choose pixels per inch and not pixels per centimeter when exporting to Tiff putting 300dpi and not 240 by default!

RGB98 profile without compression and 8 Biot channel.

By @davider54929807

As I said in my previous post, an 8-bit uncompressed tiff will typically have a file size three times larger than a compressed raw file. You have a 16 MB NEF file, and a 48 MB tiff – perfectly normal.

When exporting with Resize to fit unchecked (or exporting with pixel dimensions), the resolution value (ppi or ppcm) has no influence on file size. When you export in physical dimensions (cm or inches), the resolution value will influence file size and pixel dimensions.

And for the record, there is no such thing as 8-bit raw files. They are either 12- or 14-bit (and 16-bit for some very expensive medium format cameras/backs)