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**See below for the solution to this observed behaviour - this is due to a Windows setting, not Astrobin** Hi Salvatore, my first feature request. For planetary work, final image scale plays a big part in the end result - I for one am very careful about choosing a final image scale appropriate to the quality of the data. However it seems that the Astrobin design up-scales images (if they are below a certain dimension, perhaps?) in most elements of the website including the "full resolution" viewing option. (Which really surprised me ... should't this display an image at the uploaded resolution, no matter what?) See below for a screen shot example: the image on the left is the image displayed at 100% on my laptop, compared to the Astrobin "full resolution" view: https://www.astrobin.com/full/c8xvq3/0/?nc=user Up-scaling will always be to the detriment of the detriment of the image, adding blur and potentially other issues. Any chance we could have a "preserve original image scale" option when uploading images? Many thanks for your consideration, and for your amazing website!  Darren |
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Hi Darren, what browser are you on? AstroBin doesn't upscale for me on the high-resolution view. For instance, if I look at your recent Jupiter, the original resolution is preserved: https://www.astrobin.com/full/lb0yn0/0/ This is working for me on Chrome, Safari, and Firefox. |
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The difference in how large an image of a certain size appears depends on the dots per inch (DPI) it is viewed at. On the web, it's 72 DPI by default regardless of the pixels per inch (PPI) of your monitor. The photo viewer on your laptop is probably displaying the image 1:1 with the screen's pixels. If your laptop's screen has a higher pixel density than 72 PPI, the image will appear smaller than it does on a web browser. If you open the image on your laptop in a web browser, how does it compare to the full resolution image on AstroBin? I tried with my own image and it looks to be the same size. However, it's smaller when viewed 1:1 in my laptop's photo viewer because my screen is 220 PPI. --Ethan |
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Salvatore Iovene: The difference in how large an image of a certain size appears depends on the dots per inch (DPI) it is viewed at. On the web, it's 72 DPI by default regardless of the pixels per inch (PPI) of your monitor. The photo viewer on your laptop is probably displaying the image 1:1 with the screen's pixels. If your laptop's screen has a higher pixel density than 72 PPI, the image will appear smaller than it does on a web browser.If you open the image on your laptop in a web browser, how does it compare to the full resolution image on AstroBin? I tried with my own image and it looks to be the same size. However, it's smaller when viewed 1:1 in my laptop's photo viewer because my screen is 220 PPI. Salvatore, my humble apologies. For one, I should clarify that I never suspected Astrobin of altering the data itself ... rather I wondered whether the image was being displayed at larger than original scale in certain page layouts (e.g. for the IOTD home page banner). I'm using Chrome on Windows 10, but Ethan's reply has made me realise it's the latter of these two that's to "blame". Yes, when I open an image directly in Chrome the same upscaling happens. Turns out this was because I had the Windows 10 "Scale and Layout" set to the recommended 125%. (Text is definitely too small to comfortably read at the 100% setting.) This causes everything in Chrome to be enlarged (including images) whilst the photo viewing app (and Photoshop, for that matter) show images at original scale. Here are identical images with the Windows scale setting at 100%: https://www.astrobin.com/c8xvq3/B/ I can also achieve the same result by having the Windows scale setting at the recommended 125% and setting Chrome's zoom setting to 80%. https://www.astrobin.com/c8xvq3/C/ Yet more complexity to throw into the mix of imaging lol. Thanks Salvatore and Ethan, Darren |
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Apparently, something has happened with image scale on preview pages (with technical cards and descriptions). I browsed my gallery - all animations are now brutally scaled up, e.g. https://www.astrobin.com/80446/?image_list_page=3&nc=&nce= https://www.astrobin.com/216841/B/?image_list_page=2&nc=&nce= https://www.astrobin.com/255496/?image_list_page=2&nc=&nce= Only when I click on them, they are displayed normally. Such upscale is absolutely unncessary. Can it be fixed somehow? It was defenitely absent before. PS. I just checked - in my case it is not connected with display settings. Sorry I interrupted this topic, but the issue is connected with image scale anyway. |
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Dzmitry Kananovich: If you're referring to the image display on the technical card, yes that was my impression as well, i.e. that images with smaller dimensions are enlarged to fill the space. |
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| The problem is fixed now. Thanks Salvatore! |
