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  #1  
Old 20th April 2017
chorleyjeff chorleyjeff is offline
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Forum image quality

Not sure if this is the correct place to post this.
Anyhow. I have posted some images in the members forum.
i think I followed the guidlines regarding size and file size.
The posted images look very poor compared to the originals.
Is there a way to get best quality. I am embarassed that my pictures look so poor.
Jeff
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  #2  
Old 20th April 2017
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Re: Forum image quality

Can you post the link to them Jeff?

Cheers,

Steve
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  #3  
Old 20th April 2017
chorleyjeff chorleyjeff is offline
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Re: Forum image quality

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Originally Posted by Wreckdiver View Post
Can you post the link to them Jeff?

Cheers,

Steve
Don't know how to post a link.
The photos are in the members gallery section under my forum name " chorleyjeff".
Hope that info. enables you to find them.
Jeff
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  #4  
Old 20th April 2017
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Re: Forum image quality

Given that most people will be viewing on a screen with 1920x1080 resolution and there will be the usual forum window in which the image appears, so you end up seeing the image in a reduced area.

Having looked at your images in your gallery, they look as good as I'd expect for an image compressed down to 1000 x 1000 pixels. The algorithm that you use to re-size your images and the quality that you save the jpg at will all have an impact on the end result.

This for example is 627x600 from the old days when most screens were 1024 x 768.

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Old 20th April 2017
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Re: Forum image quality

An alternative is to use Flickr and copy and paste the BBCode for your selected image size.

An example:


Gannet by Andy Johnson, on Flickr

The original is 2048 pixels wide and can be viewed via the link. This is displayed at 1024 wide.
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  #6  
Old 20th April 2017
chorleyjeff chorleyjeff is offline
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Re: Forum image quality

Quote:
Originally Posted by Graham_of_Rainham View Post
Given that most people will be viewing on a screen with 1920x1080 resolution and there will be the usual forum window in which the image appears, so you end up seeing the image in a reduced area.

Having looked at your images in your gallery, they look as good as I'd expect for an image compressed down to 1000 x 1000 pixels. The algorithm that you use to re-size your images and the quality that you save the jpg at will all have an impact on the end result.

This for example is 627x600 from the old days when most screens were 1024 x 768.

I resized and "saved for web" and adjusted down to nearly the max. permitted of 512mb.
I am disappointed I can't do better.
Jeff
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  #7  
Old 20th April 2017
chorleyjeff chorleyjeff is offline
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Re: Forum image quality

Quote:
Originally Posted by Bengeo View Post
An alternative is to use Flickr and copy and paste the BBCode for your selected image size.

An example:


Gannet by Andy Johnson, on Flickr

The original is 2048 pixels wide and can be viewed via the link. This is displayed at 1024 wide.
Thanks.
That would be ideal. But on my IPad I can't see where I get the BBCode.
Can you tell me how I get that info. please ?
Jeff
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  #8  
Old 20th April 2017
chorleyjeff chorleyjeff is offline
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Re: Forum image quality

Quote:
Originally Posted by Bengeo View Post
An alternative is to use Flickr and copy and paste the BBCode for your selected image size.

An example:


Gannet by Andy Johnson, on Flickr

The original is 2048 pixels wide and can be viewed via the link. This is displayed at 1024 wide.
Further to earlier reply I think I have found the BBCode and with great difficulty how to copy it. I'll give it a go and see how it goes.
Jeff
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Old 20th April 2017
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Re: Forum image quality

Quote:
Originally Posted by chorleyjeff View Post
I resized and "saved for web" and adjusted down to nearly the max. permitted of 512mb.
I am disappointed I can't do better.
Jeff
Not sure what software you are using but the "Save for Web" option on many programmes is usually best avoided as it may be making some other changes to "quality". Better to re-size to the pixel dimensions you want and then do a "normal" Save As and adjust the compression to get the required file size. It has been observed in the past (first noted I think by member "snaarman" ) that this forum's software appears to introduce some softening to images when it processes them. Also if you upload an image of more than 800 pixels high it will will resize it and introduce artefacts. It is therefore adviseable to do a small amount of Unsharp Mask sharpening before making the final Save to allow/compensate for this. I use Radius 3 pixels and amount 5 (in FastStone ) on all my uploaded images.

Most "Photo Sharing" sites (including Flickr etc. ) do some sort of resizeing/resampling to uploaded images and this site is no different although exactly what each site does is unknown. Displaying images on any device normally involves the device rescaling/resizeing the image to match the display's characteristics. Think about it this way, my PC has a 1920 X 1080 pixel display but when I present it with a 4608 X3456 pixel JPEG from my E-M 10 MK II it displays it within the window of whatever programme I am using.

Hope this helps.
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  #10  
Old 20th April 2017
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Re: Forum image quality

Quote:
Originally Posted by PeterBirder View Post
Not sure what software you are using but the "Save for Web" option on many programmes is usually best avoided as it may be making some other changes to "quality". Better to re-size to the pixel dimensions you want and then do a "normal" Save As and adjust the compression to get the required file size. It has been observed in the past (first noted I think by member "snaarman" ) that this forum's software appears to introduce some softening to images when it processes them. Also if you upload an image of more than 800 pixels high it will will resize it and introduce artefacts. It is therefore adviseable to do a small amount of Unsharp Mask sharpening before making the final Save to allow/compensate for this. I use Radius 3 pixels and amount 5 (in FastStone ) on all my uploaded images.

Most "Photo Sharing" sites (including Flickr etc. ) do some sort of resizeing/resampling to uploaded images and this site is no different although exactly what each site does is unknown. Displaying images on any device normally involves the device rescaling/resizeing the image to match the display's characteristics. Think about it this way, my PC has a 1920 X 1080 pixel display but when I present it with a 4608 X3456 pixel JPEG from my E-M 10 MK II it displays it within the window of whatever programme I am using.

Hope this helps.
Many thanks for the practical advice.
Plenty of info. to work with.
All my images are RAW files which I will convert to jogs in sRGB colour space.
I'll work on a couple tomorrow evening and post the results.

Jeff
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Old 20th April 2017
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Re: Forum image quality

Quote:
Originally Posted by chorleyjeff View Post
Further to earlier reply I think I have found the BBCode and with great difficulty how to copy it. I'll give it a go and see how it goes.
Jeff
Jeff, if you already have a flickr account it is quick and simple. Just click the share icon (arrow pointing right) located on the image page -- select BBCode and Large 1024 x 768 in the pop up. Copy the code and paste into the editor here. There may be an observable loss in IQ due to Flickrs own compression but it's not bad at all. Takes moments

Male Nymph L-W Conehead Antennae by Pete O'Sullivan, on Flickr
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Old 20th April 2017
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Re: Forum image quality

Quote:
Originally Posted by chorleyjeff View Post
Thanks.
That would be ideal. But on my IPad I can't see where I get the BBCode.
Can you tell me how I get that info. please ?
Jeff
Flickr is infuriating where it comes to getting the BBCode. AFAIK, there are three (official) ways to get to Flickr:

- Flickr App (on iOS and Android)
- Flickr web page viewed on a mobile device (m.flickr.com/...)
- Flickr web page viewed on a desktop device

AFAIK, only the last gives you the BBCode link. The others (at best) give you other "sharing" links, but not the BBCode. Very annoying!
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Old 21st April 2017
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Re: Forum image quality

Quote:
Originally Posted by pdk42 View Post
- Flickr web page viewed on a desktop device
Is Ipad desktop or mobile? - Flickr behaves in browser in the same way as on my PC
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Old 21st April 2017
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Re: Forum image quality

Quote:
Originally Posted by Adagio View Post
Is Ipad desktop or mobile? - Flickr behaves in browser in the same way as on my PC
But not if you use the Flickr app
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Old 21st April 2017
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Re: Forum image quality

Quote:
Originally Posted by pdk42 View Post
Flickr is infuriating where it comes to getting the BBCode. AFAIK, there are three (official) ways to get to Flickr:

- Flickr App (on iOS and Android)
- Flickr web page viewed on a mobile device (m.flickr.com/...)
- Flickr web page viewed on a desktop device

AFAIK, only the last gives you the BBCode link. The others (at best) give you other "sharing" links, but not the BBCode. Very annoying!
I do not attempt to post images from the app
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I nice view does not mean a good photograph. My FLickr

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