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Large pictures appear fuzzy Answered

I've noticed that a lot of my pictures in my instructables appear fuzzy, blurry, or just plain compressed.  I suppose that's because they are.  I like to upload large images (720x1280, for example), but it would seem that when they get shrunken down to fit the instructable, a lot of the quality is lost.  In fact, a 300x500 pixel image ends up looking better!

So what can be done about this?  I could definitely upload smaller pictures, but I really would like to have the large ones there for people to see should they want to.  I suppose the root of the matter is that I don't want people to think I'm posting lousy pictures when it's just the jpeg compression working against me.

Discussions

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gmoon

8 years ago

Resizing by a large percentage leads to sub-par results. I'm sure "robot" reduces image size in one swoop. It's better to reduce in steps for large size changes. (By way of example, there's a Photoshop "Action" floating around that downsizes in steps of 10%, and that works well.)

For the scripting here, there is probably an optimum-sized original that yields the best result. And higher quality settings can't hurt.

The original uploaded images seem unchanged. Users can always access those.

If Ibles every releases a second book, you don't want to go too small with the originals... ;-)

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jeff-ogmoon

Reply 8 years ago

Good info. And yes, the original images are untouched.

OK, I'll start uploading full quality images then. It'll take longer, but so be it.

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killerjackalope

8 years ago

I use pixresizer to squash images from my camera today the same size and they're fine, jpeg seems to be the best format for ibles, I'll take a look at your ibles and add a comment below letting you know.

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You need to raise the save quality so they're less compressed, image size Isaiah separate thing from quality.

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jeff-okillerjackalope

Reply 8 years ago

Yeah, when exporting from iPhoto I usually choose medium quality, large size. Perhaps from now on I'll choose high quality, medium size.

Or, you know, maximum everything. I've got a 6MP camera so none of the pictures are ever much more than 3MB each.

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killerjackalopejeff-o

Reply 8 years ago

I wouldn't have the patience for that, the size is fine, maybe try uploading one with maximum quality, less compression is important in jpeg as the noise and artifacts are cumulative. Though it it's still bad then try another program or digital inclusion to the advanced settings.

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NachoMahma

8 years ago

. I can think of two things that might trigger Robot to degrade your pics:
1) Too big (too many bytes) and Robot compresses them.
2) Aspect ratio of you pics is different than what Robot uses and he doesn't do a good job of resizing them.
. Just guessing.

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killerjackalopeNachoMahma

Reply 8 years ago

It keeps aspect ratio the same, I used my phone for some 'ibles and it shoots 16:9 photos which look dead on. Also the size is well within the standards I use for upload and they work perfectly. (SLR shoots 2mb files, no thanks for the upload.)

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Ninzerbean

8 years ago

I almost always use a tripod too.

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jeff-oNinzerbean

Reply 8 years ago

So do I, when required. But I think it's mostly to do with the automatic picture resizing. A large picture that looks great is uploaded, but when you view the auto-resized version on the page it looks bad.

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Ninzerbeanjeff-o

Reply 8 years ago

But why don't mine look bad? Are you using the updated loader? I can only use the old one, that may be the problem...

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jeff-oNinzerbean

Reply 8 years ago

Yeah, I'm using the new one. I doubt that's what it is, but who knows?

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Ninzerbeanjeff-o

Reply 8 years ago

Take the same photo as used before (from your desktop or something) and reload it using the old uploader to do a comparison to the one shown in one of your 'ibles. Maybe that is it. Make like a test 'ible to see.

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Ninzerbean

8 years ago

I have found that taking the photo into Photoshop and keeping the res. at 180 and cropping the photo to cut out all extra stuff, keeping the photo about 8- 10 inches or so wide at the widest, works for my 'ibles. I have been happy with them, go look to see. I usually boost the exposure too as I am not such a good photographer. Other people go right from camera or phone to the instructable and the photos look great, they just don't look good when I do that.