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Levelling Help-Please  
User currently offlineUa935 From United Kingdom, joined Feb 2004, 610 posts, RR: 6
Posted (10 years 10 hours ago) and read 1309 times:

Evening,

I am new to photoshop CS and really need some assistance with rotating and levelling shots.

How do I use the grid which everyone talks about?

Is there a simple way to rotate and level photos, I realise that this must seem a simple task to most of you out there but I am having some difficulty, I really would appreciate some help.

How much and which way should I rotate the following rejection?


http://airliners.net/procphotos/rejphoto.main?filename=japan20007.jpg

Any assistance gratefully received.

Thanks Simon.






Live every second like you mean it
9 replies: All unread, jump to last
 
User currently offlineSkyliner From United States of America, joined Jan 2001, 204 posts, RR: 11
Reply 1, posted (10 years 10 hours ago) and read 1296 times:

In Photoshop Elements, select "rotate" in the "image" portion of the toolbar, and then "custom" within "rotate", specifying the number of degrees, and direction (right or left) that it looks like it would take to get the shot level. It's possible to use fractional degrees (0.5 or 1.7, for example) although that may be more fine-tuning than necessary. It may take several tries to get the image where you want it, and then you will need to re-crop, since the overall image has been tilted.
As for "grid", this places a cross-hatched (vertical/horizontal) pattern across the image which can be used to check for perpendicular horizon or verticals. Accessed in PS Elements via the "view" portion of the toolbar, and toggles on/off.
Hope this is helpful.
George


User currently offlineLindy From , joined Dec 1969, posts, RR:
Reply 2, posted (10 years 10 hours ago) and read 1292 times:

I'm just guessing here but in this case you should rotate this picture about 0.4 CCW. Its just a guess. But use a grid for final rotation.

Rafal


User currently offlineTimz From United States of America, joined Sep 1999, 6837 posts, RR: 7
Reply 3, posted (10 years 10 hours ago) and read 1281 times:

Yeah, that shot doesn't look objectionably unlevel, does it?

So how do you check it once you've got the grid? If you can assume those lines on the terminal are in fact vertical, then you align the one at the center of the frame with the grid. Remember, if the lens axis is pointed below the horizon the vertical lines don't appear parallel on the image-- but if a vertical line at the center of the frame is perpendicular to the top edge of the frame then I guess that makes the camera "level", by definition.


User currently offlineLewis From Greece, joined Jul 1999, 3637 posts, RR: 5
Reply 4, posted (10 years 9 hours ago) and read 1270 times:

Try this:

In the PS CS toolbar keep the eyedropper button pressed until you get two more options and then select the MEASURE TOOL,then drag the pointer over a line/pole/whatever that should be completely vertical in your photo. Now rotate the image Arbitrarily and will see that the degrees field hasalready been filled.


User currently offlineKC7MMI From United States of America, joined Oct 2003, 854 posts, RR: 3
Reply 5, posted (10 years 9 hours ago) and read 1264 times:

Yes, all the vertical lines in the photo should be as vertical as possible. Sometimes the outter vertical lines lean inwards (depends on the lens) but that doesn't seem to be a problem with this photo. Just rotate it CCW a bit.

User currently offlineWoody001 From United Kingdom, joined Feb 2004, 529 posts, RR: 22
Reply 6, posted (10 years 9 hours ago) and read 1264 times:

Yep, rotate anti-clockwise 0.37deg.

As Lewis has said above - pick the measure tool from the toolbar and drag along a vertcal axis. Then go Image - Rotate - Arbitrary, it will have the amount loaded up ready for you.

Ian.



If I could just get the afterburner working...
User currently offlineAndrewuber From United States of America, joined Jul 2003, 2528 posts, RR: 40
Reply 7, posted (10 years 8 hours ago) and read 1253 times:

Great shot, I concur with the CCW rotation suggestions, and may I suggest a tiny bit of contrast enhancement?

Keep up the good work!

Drew



I'd rather shoot BAD_MOTIVE
User currently offlineUa935 From United Kingdom, joined Feb 2004, 610 posts, RR: 6
Reply 8, posted (9 years 12 months 4 days 6 hours ago) and read 1202 times:

Thanks for all your help guys, sorted.

Regards Simon.



Live every second like you mean it
User currently offlineJavibi From Spain, joined Oct 2004, 1371 posts, RR: 41
Reply 9, posted (9 years 12 months 4 days 4 hours ago) and read 1192 times:

You might want to check this out and keep it for future reference, another forum member graphically explains the use of the measure tool:

http://www.airliners.net/discussions/aviation_photography/read.main/76567/6/




"Be prepared to engage in constructive debate". Are YOU prepared?
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