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Picture size for posting

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Bob J View Drop Down
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Post Options Post Options   Quote Bob J Quote  Post ReplyReply Direct Link To This Post Topic: Picture size for posting
    Posted: 28 August 2015 at 10:27
Why you should keep to Dyxum’s suggested picture sizes

In our rules and guidelines we suggest that members only post pictures that are 1024 pixels wide, or 960 pixels high. We have noticed in recent months that more and more people are posting images that are much bigger than this, and are relying on the forum software to re-size their images to fit. The idea of this message is to explain why we would like people to keep to the posting sizes suggested, despite the ability of the forum software to display large images to fit normal monitor sizes…

Browser incompatibilities

Although the forum scripts resize overlarge pictures, this feature may not work with all browsers , so some members may not see your pictures as you intend.

Slow connections

Even if your image is displayed at a reasonable size in the browser of a viewer, the whole full-size picture is being transferred down the line – this may not be noticeable if you are working on high speed broadband, but for users on slower lines or WiFi it can make viewing a picture post very difficult.

Subscriptions

A number of members subscribe to picture threads so that they get an email sent through with any new postings – the resizing does not work with most email packages, so your image will appear in their email at full size.

DPCs and exhibitions

Our team members spend quite a bit of time dealing with preparation for exhibitions and voting threads for DPCs, the scripts they use to compile these postings do not benefit from resizing, which makes the whole process much more labour intensive. We would rather not lose great pictures from exhibitions or DPC voting lists just because the images are too big for us to work with.

But it is not just for the comfort of other Dyxum members that we think you should keep within the guidelines - there are particular reasons why it is not in members' interests to just leave resizing of their pictures to the forum app:

Sharpening

To get the optimum benefit from sharpening you should be applying the sharpening at the resolution the image will be viewed at (ie you sharpen differently for something to be viewed on a monitor than you would for a print). If you sharpen for a higher resolution and then the forum software resizes, the benefits of your sharpening will be lost.

Copyright

If you post at high resolutions, your images can be downloaded and pirated at that resolution – we know a lot of people spend time applying watermarks to their images, but effectively posting a 600x900 image means that any pirate is only going to have a low resolution copy that they will not be able to do much with practically – however, if they have a 4000x6000 image they have something that they can pass off as their own (and something it is worth spending time removing a watermark from).

For the above reasons we would ask all members to take the time to resize their images so they are at or below the suggested resolutions.
We are also considering commissioning some knowledge-base articles on preparing images for web display and would be grateful for any volunteers to contribute text or useful links to guides elsewhere on the internet.

 



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nandbytes View Drop Down
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Post Options Post Options   Quote nandbytes Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2015 at 10:50
interesting point about web-sized displays and theft. I am currently in process of designing my website for pictures (have been for last 3 months ), I am relying on wordpress plugins to resize and they work pretty well as far as I can tell.

Otherwise I normally just use lightroom to downsize my images (to about 4mp) and flickr to downsize it further when posting on here.
my flickr
A7rII, NEX-7 (FS) & DMC-CM1
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MiPr View Drop Down
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Post Options Post Options   Quote MiPr Quote  Post ReplyReply Direct Link To This Post Posted: 03 September 2015 at 10:13
Thanks Bob for the summary.
I'm noise-blind. And noise-about-noise-deaf too ... |   BTW, Dyxum Weekly Exhibitions don't grow on trees ...
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skm.sa100 View Drop Down
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Post Options Post Options   Quote skm.sa100 Quote  Post ReplyReply Direct Link To This Post Posted: 03 September 2015 at 16:11
My Picasa workflow:
I use Picasa as my hosting site. When I upload from my computer, I use "Best for web sharing" for Image Size. That saves online storage and also prevents piracy to a certain extent due to the smaller image which might not translate very well into a print size. Depending on how finicky you are, you might want to save at this resolution before uploading to help keep YOUR preferred sharpening and then upload original size.

When I copy the image URL from Picasa, the size is included in the URL and I resize it as I see fit.

For example, here is an image URL I *might* have shared before.

https://lh3.googleusercontent.com/-aB0YEoHqOmU/VTHRyh5YQAI/AAAAAAAA4hI/qyqQsNIPqIM/s640-Ic42/UV%252520effect%252520flower%2525202.jpg

The image size his highlighted in yellow.
Earlier, the URL used to have 'h' and 'w' for height and width and I would manually update those values. Now I just update the 's640' to 's800' so it's 800 pixels wide (or high, depending on orientation). The other dimension seems to be auto calculated. You can go up to 1040, as Bob suggested above, if you want a larger size.

If you use Picasa and found this post useful, my effort isn't wasted.


Regards,
Sashi
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MiPr View Drop Down
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Mikre Dyxum Administrator

Joined: 25 August 2006
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Post Options Post Options   Quote MiPr Quote  Post ReplyReply Direct Link To This Post Posted: 03 September 2015 at 20:07
Thanks Sashi.

BTW, we have a thread describing how to post pictures from various sites, including methods of choosing the size of the photo to post.
I'm noise-blind. And noise-about-noise-deaf too ... |   BTW, Dyxum Weekly Exhibitions don't grow on trees ...
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Sarbey View Drop Down
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Joined: 22 December 2016
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Post Options Post Options   Quote Sarbey Quote  Post ReplyReply Direct Link To This Post Posted: 22 December 2016 at 20:44
Hi,

Thanks for the helpful information.
 



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