please help - another PRINTING QUestion


QuestionableCarrot

Link Posted 02/08/2019 - 19:46
Guys

Thanks for previous help on exporting from LR

One thing I forgot to ask is this> Do you choose DIMENSIONS or one of the others like Long Edge?

In this example Im exporting a 8 x 10 and want to make sure Im doing it correct


sorry cant do screen dump but im sure yo know what i mean.. ihope
Cheers

A
Learn how to live and you'll know how to die; learn how to die, and you'll know how to live.

Check out ones photographs on Flickr!

http://www.flickr.com/photos/awprentice/
Last Edited by QuestionableCarrot on 02/08/2019 - 19:52

pschlute

Link Posted 02/08/2019 - 20:08
Don't think it matters. If you choose dimensions and and it is 8x10" that should be the same as choosing long edge 10"

Why not do a few experiments and see which works best for you.
Peter



My Flickr page

tigershoot

Link Posted 02/08/2019 - 20:41
Note that the dimenssions setting for export will have no effect on the aspect ratio - that is set by using the crop setting in the develop module
K3ii, K-5, K-x, DA150-450mm, DA16-85WR, DA16-45, DA18-55WR, DA18-135WR, DA35 F2.4, M100mm F4 Macro, DA55-300mm, FA50mm 1.4, AF360 Flash, AF540 Flash

QuestionableCarrot

Link Posted 02/08/2019 - 21:32
tigershoot wrote:
Note that the dimenssions setting for export will have no effect on the aspect ratio - that is set by using the crop setting in the develop module

ARGH!!!!

Worried Now!

If i export the sizes I want will they print accordingly? Thats all i care about
Learn how to live and you'll know how to die; learn how to die, and you'll know how to live.

Check out ones photographs on Flickr!

http://www.flickr.com/photos/awprentice/

tigershoot

Link Posted 02/08/2019 - 22:46
As long as your aspect ratio is the same as the aspect ratio of the print you are having made, and as long as you don't resize the image down ridiculously in the export stage you will be fine. I would not resize at all. Let me explain my method.

Regarding the 'Image Sizing' options in export...
The only time I enter a figure in there is if I am wanting to downsize an image, say for emailing to someone. The options in the drop down, long edge, short edge etc. are just so that you can set what the maximum dimension is going to be. For what you need it's irrelevant.
The resolution value? Totally irrelvant if you are specifying the output size in pixels! Why? It has no affect on the pixel dimension in the resulting image. If your image is 4000px by 6000px, it is still going to be the same dimension whatever the value you enter in 'resolution'. So what is the point of the value then? It's used to set a resolution value in the resulting jpeg so that when that image is placed in a page layout program, (InDesign for example) the image places at the size intended. Even then, it's no hassle to the designer, as typically he draws a box and imports the image into the box. It's totally irrelevant if the value is 72ppi or whatever. What counts is the effective resolution.

If however you are setting absolute sizes in the export section, i.e. you are setting the image to 10" by 5" for example, then the resolution value does have an affect - it drives how many pixels are going to make up the length, and how many the height. In this example, if you set it to be 300 pixels per inch, then your export image would be 3,000 pixels wide. If you had set it to be 72, then it would only be 720px wide.

Example.
Image box on the page is 10" wide by 5" high. If it's for print, then generally, 300PPI is the expected resolution (you can actually go much lower depending on the image, and what it's needed for). So the image would need to be 3000px wide by 1500px high. Placed on the page, an image exactly this size, i.e. 3000x1500px would have an effective PPI of 300. Fine. The resolution set in the image is irrelevant. If the image was say 6000px wide by 3000px high, then placed on the page in the same box, the effective PPI would be 600.

As such, for posters, I would simply ensure the aspect ratio is fine, export a jpeg with the colour space as either sRGB or AdobeRGB, and UNTICK 'Image Sizing'. Quality should be on max. The resulting jpeg will be the maximum pixel dimension it can be without any enlarging or downsizing.

I hope I am making sense here! Please ask if you need any further help.
K3ii, K-5, K-x, DA150-450mm, DA16-85WR, DA16-45, DA18-55WR, DA18-135WR, DA35 F2.4, M100mm F4 Macro, DA55-300mm, FA50mm 1.4, AF360 Flash, AF540 Flash

QuestionableCarrot

Link Posted 04/08/2019 - 09:51
tigershoot wrote:
As long as your aspect ratio is the same as the aspect ratio of the print you are having made, and as long as you don't resize the image down ridiculously in the export stage you will be fine. I would not resize at all. Let me explain my method.

Regarding the 'Image Sizing' options in export...
The only time I enter a figure in there is if I am wanting to downsize an image, say for emailing to someone. The options in the drop down, long edge, short edge etc. are just so that you can set what the maximum dimension is going to be. For what you need it's irrelevant.
The resolution value? Totally irrelvant if you are specifying the output size in pixels! Why? It has no affect on the pixel dimension in the resulting image. If your image is 4000px by 6000px, it is still going to be the same dimension whatever the value you enter in 'resolution'. So what is the point of the value then? It's used to set a resolution value in the resulting jpeg so that when that image is placed in a page layout program, (InDesign for example) the image places at the size intended. Even then, it's no hassle to the designer, as typically he draws a box and imports the image into the box. It's totally irrelevant if the value is 72ppi or whatever. What counts is the effective resolution.

If however you are setting absolute sizes in the export section, i.e. you are setting the image to 10" by 5" for example, then the resolution value does have an affect - it drives how many pixels are going to make up the length, and how many the height. In this example, if you set it to be 300 pixels per inch, then your export image would be 3,000 pixels wide. If you had set it to be 72, then it would only be 720px wide.

Example.
Image box on the page is 10" wide by 5" high. If it's for print, then generally, 300PPI is the expected resolution (you can actually go much lower depending on the image, and what it's needed for). So the image would need to be 3000px wide by 1500px high. Placed on the page, an image exactly this size, i.e. 3000x1500px would have an effective PPI of 300. Fine. The resolution set in the image is irrelevant. If the image was say 6000px wide by 3000px high, then placed on the page in the same box, the effective PPI would be 600.

As such, for posters, I would simply ensure the aspect ratio is fine, export a jpeg with the colour space as either sRGB or AdobeRGB, and UNTICK 'Image Sizing'. Quality should be on max. The resulting jpeg will be the maximum pixel dimension it can be without any enlarging or downsizing.

I hope I am making sense here! Please ask if you need any further help.

Gav

Thank you for taking the time to leave such a detailed response.

When in LR I am using the crop tool open padlock and then saving three dimensions - 8 x 10, 20 x 16 30x12 in the eventuality that I will need these sizes in an exhibition.

Provided I am exporting at the correct sizes and ppi am i still ok?

Or are you saying I should be cropping those specific sizes in LR and exporting the same to file?

If you happy to talk to me PM your mobile

Id be super appreciative!

A
Learn how to live and you'll know how to die; learn how to die, and you'll know how to live.

Check out ones photographs on Flickr!

http://www.flickr.com/photos/awprentice/

tigershoot

Link Posted 05/08/2019 - 12:41
10x8 is the same aspect ratio as 20x16, so you only need to export one file, leave the 'Resize to fit' unticked. For your 30x12, then I would create a virtual copy of the image in Lightroom and set the 30x12 crop to that virtual copy. This way you will have two copies of the same file, one at the 5x4 ratio (for the 10x8 and 20x16) and another for the 30x12.

On export, leave the 'Resize to fit' unticked in 'Image Sizing'

The resulting files, may effectively be higher than they need to be in resolution terms, but given high speed data transfer these days it's not worth the hassle of downsizing to the exact PPI needed.
K3ii, K-5, K-x, DA150-450mm, DA16-85WR, DA16-45, DA18-55WR, DA18-135WR, DA35 F2.4, M100mm F4 Macro, DA55-300mm, FA50mm 1.4, AF360 Flash, AF540 Flash

pschlute

Link Posted 05/08/2019 - 15:51
tigershoot wrote:


The resulting files, may effectively be higher than they need to be in resolution terms, but given high speed data transfer these days it's not worth the hassle of downsizing to the exact PPI needed.

....unless the printing firm he uses requires a specific ppi. The one I use does.
Peter



My Flickr page
Add a Comment
You must be registered or logged-in to comment.