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Jagged Edges - What Causes Them And How To Reduce?  
User currently offlineRaptors From United Kingdom, joined Mar 2005, 180 posts, RR: 0
Posted (8 years 2 months 2 weeks 6 days 22 hours ago) and read 5836 times:

A question which has been bugging me for a while now, is what causes those jagged edges? They seem to get worse, the smaller the photo is made, and they can still appear even if the correct 3/2 ratio is used. Why is this, and more importantly, how can you reduce the effects, or stop them happening in the first place? Does going 'filterless' solve this problem, or at least help it?
Any thoughts on this matter will be read with interest!!!! Thanks.


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7 replies: All unread, jump to last
 
User currently offlinePtrjong From Netherlands, joined Mar 2005, 3961 posts, RR: 18
Reply 1, posted (8 years 2 months 2 weeks 6 days 22 hours ago) and read 5828 times:

Jaggies are mostly caused by a digital technique called 'sharpening', which makes your photos less 'soft'. Sharpening is best applied selectively in post-processing to prevent these jaggies. If your photos are jagged straight out of the camera, you should probably turn automatic in-camera sharpening off.

Peter Smile



The only difference between me and a madman is that I am not mad (Salvador Dali)
User currently offlineRaptors From United Kingdom, joined Mar 2005, 180 posts, RR: 0
Reply 2, posted (8 years 2 months 2 weeks 6 days 21 hours ago) and read 5806 times:

Thanks Peter, I'll give it a try!!  Smile


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User currently offlineGerardo From Spain, joined May 2000, 3481 posts, RR: 31
Reply 3, posted (8 years 2 months 2 weeks 6 days 21 hours ago) and read 5789 times:

Jaggies can also appear while resizing a photo. Photoshop for example has different options to resize a photo.

Gerardo



dominguez(dash)online(dot)ch ... Pushing the limits of my equipment
User currently offlineRaptors From United Kingdom, joined Mar 2005, 180 posts, RR: 0
Reply 4, posted (8 years 2 months 1 week 6 days 1 hour ago) and read 5663 times:

Thanks Gerado
I'm not sure if you are an expert or not, but can you provide me with a little more info. At smaller szies I seem to have more jaggies than larger sizes. Can I do anything bout this when edtting, or can some setting be changed?
Thanks.



SSC/111/146/AR8/AT7/AN3/AB4/6/310/319/20/21/332/3/343/6/703/722/732-9/74L/2/4/F/752/3/772/3/W/E170/190/CR7/9
User currently offlineRaptors From United Kingdom, joined Mar 2005, 180 posts, RR: 0
Reply 5, posted (8 years 2 months 1 week 6 days 1 hour ago) and read 5663 times:

Thanks Gerado
I'm not sure if you are an expert or not, but can you provide me with a little more info. At smaller szies I seem to have more jaggies than larger sizes. Can I do anything bout this when edtting, or can some setting be changed?
Thanks.



SSC/111/146/AR8/AT7/AN3/AB4/6/310/319/20/21/332/3/343/6/703/722/732-9/74L/2/4/F/752/3/772/3/W/E170/190/CR7/9
User currently offlineLinco22 From United Kingdom, joined Jun 2005, 1380 posts, RR: 15
Reply 6, posted (8 years 2 months 1 week 6 days 1 hour ago) and read 5647 times:

At smaller sizes you are essentially moving all those individual pixels into a smaller space. Obviously its all relative but on doing that you tend to create jaggies. But what you must remember is that your monitor plays a large part on this too. My Dell Ultrasharp 19" seems to generate more jaggies than my old CRT.

Regards
Colin  Smile


User currently offlineRaptors From United Kingdom, joined Mar 2005, 180 posts, RR: 0
Reply 7, posted (8 years 2 months 1 week 5 days 21 hours ago) and read 5629 times:

Thanks Colin, it makes sense what you say. I too have a Dell 17 or 19 Flat screen monitor, so maybe that has something to do with it. I shall trall through my rejections at work and compare them to the photos on my home PC.


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