Photos trending across
the platform right now...
I feel I need to address the image quality on Clickasnap a bit, and I'll compare the quality on Clickasnap with the quality on 500px, one of the largest image sharing platforms.
I have taken two screenshots of one of my recent images, Solbergfoss Selfie, which you can see here. The first one is from Clickasnap, at the highest possible resolution. The second one is from 500px, at the same resolution. First of all look at the power lines. The Clickasnap version suffers from very bad aliasing and I find them disturbing to look at. In the 500px version, the power lines are very close to perfect. I have uploaded the exact same file to both sites, at full size, 5196x3462 pixels.
In this blog post, Tom says: "We actually compress images incredibly efficiently and generally speaking it is very difficult to determine that they have been compressed." No, In fact images are compressed way too much, and it is very easy to see. I have seen this on many of my images, and also on others' but this time it was so obvious that I could not let it pass.
Also, I have tried to adjust the TrueForm settings. This, as far as I have understood it, should ensure that quality was kept at a maximum. Well, as I adjust the settings, which look very much like an Unsharp Mask feature (nothing fancy about that) I can see the effect in the preview, but it is not possible to get rid of the aliasing. Also this does nothing to the final image. Clicking the "View" button that appears when hovering the mouse over the preview both before and after the "Apply Changes" button makes no difference at all. Nor after reloading the image page. And why should it? I see no point in adjusting a small thumbnail and guessing how the result will look on the full size image. The preview should be a 100% crop of the image, not a small thumbnail.
In the same blog post as above, Tom also says: "This new image filter technology is called ‘TrueForm‘ and ensures your photos are always seen exactly as you intended." Again a big NO! I never intended those power lines to look like strings of dots and short lines floating in the air by them selves. I intended them to look like they do on 500px.
I remember there was much talk about this last year around the time TrueForm was implemented and also before that, but lately it has been rather quiet. But the fact is that there is still a long way to go with the by far most important aspect of this site. I mean, even Facebook does this better!
- Quality on 500px
- 500px-quality.jpeg (77.32 KiB) Viewed 975 times
I will discuss image compression once our next stint is complete, however reducing the compression increases the bandwidth and storage costs and will reduce the payments per view as there is no net revenue increase. If the general consensus of the platform users is to do this then we will
I then scaled down the original to 1000x666 pixels the quick and dirty way with no interpolation and exported with a jpg quality of 90%. Not surprisingly, the result was pretty much identical to the image on Clickasnap! File size 199,0 kB.
So what remained now was to scale down to 1000x666 once more, but this time with Cubic interpolation and again with 90% jpg quality. File size was 166,4 kB. This is the smallest file of those three, and also the one with the best quality.
Therefore my theory is that compression is not the issue at all. It has everything to do with resizing. And you actually waste bandwith by downscaling the images without interpolation and therefore end up sending out larger files than you need and with lower quality. Turn on a high quality interpolation when you downsize the images and you get a Kinderegg: 1-you save bandwith, 2-higher quality images are displayed and 3-you get happier users.
Since it seems like I can't have more than one attachment in a post I'll attach the two remaining examples in comments. Please do not reply until you have seen them.
- Crop of full size exported at 20%
- Solbergfoss_0013_compress_20_crop.jpg (63.57 KiB) Viewed 964 times
The one from 500px is scaled down some, so they can't really be compared. The difference in my examples above are much bigger.
I have had some trouble with this too.