Resizing sizes, and different forums.

[Dave in Wales]

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I post images on a number of forums, Leica and others. I resize to a height of 768, now this is fine for other forums but it's tooooooo tall for this forum.

Now why is that?

OR....am I doing something wrong? 

Edited August 19, 2019 by Dave in Wales

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[wda]

Recheck your file size and longest dimension. Also ppi. Make adjusts to conform to forum parameters. Height is not a determinant unless it is the longer dimension. I looked for but could not find the 'sticky' which gave useful hints for uploading  pictures.

[AndreasG]

vor 2 Stunden schrieb Dave in Wales:

OR....am I doing something wrong? 

Maybe it is the file size? It should not exceed 500kB (1000kB for premium members). The maximum width is 1280, the height is not defined as far as I know.

[stuny]

The larger that either side can be is 1280 pixels

[Dave in Wales]

Thanks all, I usually restrict my width to 1024.

5 hours ago, wda said:

Recheck your file size and longest dimension. Also ppi. Make adjusts to conform to forum parameters. Height is not a determinant unless it is the longer dimension. I looked for but could not find the 'sticky' which gave useful hints for uploading  pictures.

ppi is only relevant when printing..... I think, although I could be wrong. 

[marchyman]

3 hours ago, Dave in Wales said:

ppi is only relevant when printing..... I think, although I could be wrong. 

 

Oh boy, soapbox time

 Not just printing, but yes, ppi/dpi is a property of the output device, not the image.  My current monitor has 5120 pixels over 23 7/16 inches for a horizontal PPI of about 218 PPI.   Nothing you can do to your image will change my hardware.  It will always be about 218 PPI.   The ONLY time PPI is useful is when you are told something like "I need an image that is exactly 6.5 inches long when printed on a 300 DPI device".   That says you'd better provide an image that is 1,950 pixels long.

The X and Y Resolution metadata fields are the only thing that changes when you specify a DPI when exporting an image.  Using Lightroom I exported an image with the DPI set to 240.   I exported the same image after changing the DPI to 360.  The two images have identical file sizes.  The bits that make up the image are identical.  The metadata is slightly different.   Other than having different timestamps the big difference was this:

 

@@ -12,11 +12,11 @@
Exif Byte Order                 : Little-endian (Intel, II)
Make                            : LEICA CAMERA AG
Camera Model Name               : LEICA Q (Typ 116)
-X Resolution                    : 240
-Y Resolution                    : 240
+X Resolution                    : 360
+Y Resolution                    : 360
Resolution Unit                 : inches

 

<end soapbox>

[CharlesL]

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You can escape the limits of direct image post to Leica forum:
1. Put the photo on Flickr. If you wish, you can check the option that hides a photo from the general public fairly well.
2. On the Flickr page for your photo, click "View all sizes" at the lower right. Right-click and see a popup menu. Copy the link location for the dimensions you want.
3. In your post on Leica forum, click "Insert other media," choose the option for external URL, and paste in the copied link.

That is what I did here, for example:
Example

 

Edited August 25, 2019 by CharlesL
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