Displaying a large image

I have a question regarding an NPN large image:

when uploading i have the opportunity to upload a large 1000mb and  a small 500mb image. However when I display the large image I can display 2 different large versions. By clicking on the 720px image I get one large popup and by clicking on the arrow below the the 720px image I get a new tab with a still larger image. Which of these 2 large images have I uploaded?

i'm looking at images from a MacBook Pro laptop. I suspect that those with this hardware will relate to my question better than those on Windows. 

Igor, the largest allowable image is 1600 long side and 1meg maximum as you mentioned. When you click on the "arrows"  below the main image that is the image you should then see displayed, it being the largest you've uploaded. Whatever image you load as your first choice when posting images is that image in the end.
As far as I know, the 720 long side and 500kb size is used for the page image, the image displayed when opening the post up, and then if you click on it directly too. It would also be the second in the sequence when you're uploading images in any given post.
 

Igor,

Here's the way it works if you upload a large version (up to 1600px) and a small version (up to 720px)...

• If you click the image in the gallery 'comment' page, you get a window with the 720px image.
• If you click the 'arrows', you get a window with the 1600px image.

Here's what happens if you upload a 720 px image and do not upload a 1600px image...

• If you click the the image in the gallery 'comment' page, you get a window with the 720px image.
• If you click the 'arrows', you will get a window with the 720px image.

The way the images are displayed is platform-independent because we are viewing the images in a Web browser.
--P

So what happens if one upload only the 1600 px size?
Frankly, I find it very tedious to have to upload and keep  several copies of every single image, each with different embedded stuff and more. .

Thanks -
Sandy

So what happens if one upload only the 1600 px size? Frankly, I find it very tedious to have to upload and keep  several copies of every single image, each with different embedded stuff and more. .

- Sandy.

You get a small 720px image derived from the large one you uploaded, using whatever magic resizing process that is coded for NPN.

What also happens is the smaller image loses whatever color profile you have embedded in the version you uploaded (which is usually Adobe RGB from the images of yours that I've examined). This is why the smaller image does not match the larger version on a computer with a color aware browser. This is what we have explained to you many times before and why we strongly recommend:

1. making every image you upload sRGB
2. embedding that sRGB profile in every image you upload
3. creating two images to upload: a larger 1600px version plus a smaller 720px version.

This way the images viewers see will be consistent and look as you intend them to look.

Here's the way it works if you upload a large version (up to 1600px) and a small version (up to 720px)...

• If you click the image in the gallery 'comment' page, you get a window with the 720px image.

Just out of curiosity: Why are we displaying a second 720x image when we click on a 720px image in the comment page?

My safari web browser displays the 720px popup larger than the comment 720px image. And the difference varies considerably from image to image. I believe this is partly due to the retina display being resized from 2800X1800 to 1400x900. I think the apps are also magnifying images in their own way. The Preview app displays the 720px image in still a different size. 

 

Igor:  All the "small" images in the Gallery-both main posts and comments can be loaded as larger images.  The note says you can load them as up to 1 MB, but that's never worked for me.  I size them at 1200 pixels max width or 1000 max height and just under 500 KB.  They show on the screen as 720 pixels max dimension, but when you click on them, it displays them at the size I uploaded.  The same is true for images loaded on the forum pages like this one.  As an example, I've loaded an image here that I saved as 1200 pixels across.

Hope this clarifies things.
 

I've never had a problem uploading a 1600 px/1Mb image.  Folks may want to adjust the pixel dimensions for "best" display purposes.  For example on my 27" iMac I have to scroll to view a vertical image that's 1600 pixels tall, while a 1200 pixel tall image shows the entire view.  Being somewhat lazy, I do let the NPN software create the 720 px version.  Even though I embed the color as sRGB, the 720 px version always shows some loss of detail, especially in the darker tones.