Sponsor Message:
Aviation Photography Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Photoshop - Any Tips For "magnetic Lasso" Tool?  
User currently offlineNewark727 From United States of America, joined Dec 2009, 1340 posts, RR: 0
Posted (1 year 7 months 2 days 18 hours ago) and read 3768 times:

Like many of you (I assume,) I edit my images before submitting them here with Photoshop, in my case CS5 for Mac. When I apply additional sharpening to an image as a JPEG, I try to only apply it to the airplane itself, and usually I can select off the rest with something like the magic wand tool, but sometimes there's a lot of contrast and clutter behind the aircraft and I can't do it quite like that. So I have to try and use the magnetic lasso tool to get the airplane, however since I first learned the program back when it was CS2, I've never been comfortable with this method- it is always picking the wrong edge, and the need to constantly keep the mouse around the edge is tiresome. It has a degree of configurability, so I might be able to fix some of that? I was wondering if any of you had experience or advice with this. Thanks.

8 replies: All unread, jump to last
 
User currently offlineKFLLCFII From United States of America, joined Sep 2004, 3301 posts, RR: 30
Reply 1, posted (1 year 7 months 2 days 18 hours ago) and read 3749 times:

While you're tracing the object, frequently click the mouse to "lock" the location of the selection before it gets a chance to jump off it. Conversely, you can also set a higher Frequency number so it does this on its own too. You can also adjust the Edge Contrast to a lower number so the tool becomes less "tolerant" to selecting objects adjacent to your desired selection.

I will say this though, using any tool for selecting the "edge" of an object usually prevents the outlined edges themselves from receiving sharpening, while only applying inside the selection. It has been my experience that using the Polygonal Lasso tool to roughly outline the entire object does a much better job to include the edges, and also saves the time and hassle as noted above from trying to use the Magic Wand or Magnetic Lasso. 99 shots out of 100, the little bit extra included in the selection but outside the object getting some sharpening is going to make no difference to the final product at all, because it's usually sky, shadow, or flat fuselage.

 



"About the only way to look at it, just a pity you are not POTUS KFLLCFII, seems as if we would all be better off."
User currently offlineSilver1SWA From United States of America, joined Mar 2004, 4782 posts, RR: 26
Reply 2, posted (1 year 7 months 2 days 15 hours ago) and read 3718 times:
Support Airliners.net - become a First Class Member!

I don't use any of the selection tools to select the aircraft only. I duplicate the layer and then use layer masking to control which part of the photo the effect is applied. The added benefit is being able to adjust brush and layer opacity for added control.

[Edited 2013-01-26 11:19:45]


ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
User currently offlineNewark727 From United States of America, joined Dec 2009, 1340 posts, RR: 0
Reply 3, posted (1 year 7 months 2 days 13 hours ago) and read 3685 times:

Quoting Silver1SWA (Reply 2):
I don't use any of the selection tools to select the aircraft only. I duplicate the layer and then use layer masking to control which part of the photo the effect is applied. The added benefit is being able to adjust brush and layer opacity for added control.

That's clever, I might give it a try. Thanks.


User currently offlinevikkyvik From United States of America, joined Jul 2003, 9932 posts, RR: 26
Reply 4, posted (1 year 7 months 2 days 12 hours ago) and read 3678 times:
Support Airliners.net - become a First Class Member!

I don't use magnetic lasso. Instead, I just use the Polygonal Lasso tool and trace around the aircraft. I used to be very picky about tracing around the aircraft very carefully. Then I realized it doesn't really matter. So I just do it quickly and get it reasonably traced.


"Two and a Half Men" was filmed in front of a live ostrich.
User currently offlineDL747 From United States of America, joined Nov 2012, 612 posts, RR: 0
Reply 5, posted (1 year 7 months 2 days 12 hours ago) and read 3670 times:

Quoting vikkyvik (Reply 4):
I don't use magnetic lasso.

I second the notion. I use Polygonal like you said, or if it is selective sharpening to a part of the aircraft, just the regular lasso. If it is a very "congested" area that needs precise sharpening, I duplicate the layer like Ryan said.



Just like the shirt says, Boeing Builds It Better!
User currently offlineptrjong From Netherlands, joined Mar 2005, 3933 posts, RR: 18
Reply 6, posted (1 year 7 months 2 days 10 hours ago) and read 3656 times:

Quoting vikkyvik (Reply 4):

Same here.



The only difference between me and a madman is that I am not mad (Salvador Dali)
User currently offlineckw From UK - England, joined Aug 2010, 731 posts, RR: 16
Reply 7, posted (1 year 7 months 2 days 10 hours ago) and read 3649 times:

Depending on the subject, sometimes it is easier to duplicate the layer, sharpen the whole thing then erase what you don't want sharpened - you can also control the strength of the erase.

The ting with PS is there never seems to be one answer - most experienced users I know have a whole arsenal of tricks which they apply to images according to the content.

Cheers,

Colin



Colin K. Work, Pixstel
User currently offlineSilver1SWA From United States of America, joined Mar 2004, 4782 posts, RR: 26
Reply 8, posted (1 year 7 months 2 days 9 hours ago) and read 3641 times:
Support Airliners.net - become a First Class Member!

Quoting ckw (Reply 7):
Depending on the subject, sometimes it is easier to duplicate the layer, sharpen the whole thing then erase what you don't want sharpened - you can also control the strength of the erase.

Well this is pretty much the same thing I do, except I use layer masks instead of erasing because you can apply/un-apply if needed.



ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Any Tips For A New Photographer? posted Sun Apr 18 2010 17:16:26 by KLM77
Any Tips For Aviation Photography Beginners? posted Wed Apr 15 2009 02:51:48 by Miniflyer
Flying To HNL - Any Tips For Air-to-air Photos? posted Tue Dec 18 2007 17:38:09 by Jawed
Any Tips For Taking Night Shots? posted Wed Aug 13 2003 06:20:10 by Mirrodie
Does Anyone Have Any Tips For Me? posted Mon Aug 26 2002 17:33:34 by Skymileman
Any Tips For Someone Going To SLC, CVG, And Syr? posted Sun Jun 16 2002 19:31:55 by Skymileman
Advice And Tips For A Newbie posted Mon Nov 26 2012 13:08:23 by moncur
Cork Airport, any good for spotting? posted Wed Jun 8 2011 13:32:27 by DublinSpotter
Any Tips For Taking Pictures Of Contrails posted Wed May 18 2011 09:38:53 by tonybhoy96
Tips For EOS 500D Photographing? posted Tue May 17 2011 02:31:54 by YannickVP