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BjornVB
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Level Rejections

Mon Dec 31, 2007 1:26 pm

Hi all,

I'd like to get your opinion on 2 recent level rejections I had (only rejectreason btw):

- N470QS.jpg (Untitled Gulfstream Aerospace G-IV-X Gulfstream G450)
http://www.airliners.net/procphotos/....main?filename=20071231_N470QS.jpg

- N380WA.jpg (World Airways Cargo McDonnell Douglas MD-11(F))
http://www.airliners.net/procphotos/....main?filename=20071231_N380WA.jpg

Now, I doublechecked again in PS with the grid and I really don't see the reason why they were rejected, since imo they are well leveled... I use the vertical lines in the buildings as reference, since imo such a building IS leveled  Smile

Any help is welcome.

I don't want to start appealing for fun, but if I'll see replies for the same pic like 'a bit CW' followed by ' a bit CCW', I guess it might be time to appeal  Smile

Thanks in advance for the check and a happy 2008 for all of you!
Björn
 
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ptrjong
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RE: Level Rejections

Mon Dec 31, 2007 1:43 pm



Quoting BjornVB (Thread starter):
I use the vertical lines in the buildings as reference

You need to do this thorougly for a.net, though, like it or not. Be be sure to do your leveling using the large original photo, and long, central vertical lines.

It seems to me the MD-11 can use a tiny bit of CCW, the Gulfstream a little bit more.

Peter Smile
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Scotland1979
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RE: Level Rejections

Tue Jan 01, 2008 12:20 am

I think both are perfect, first to look at post and doors of building straight up 90 degree angle. Ignore the runway level. Some runways at some airports are unlevel so all the building always perfect 90 degree angle so I always do the buildings at 90 degree angle. I have heard that some screeners do runway level first. But your photos with buildings, the buildings must be the first to look at
Jesus said "I am the Way and the Truth and the Life. No one comes to the Father except through Me" - John 14:6
 
JakTrax
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RE: Level Rejections

Tue Jan 01, 2008 4:30 am

They both look fine to me too. If some screeners check the runway and some check the objects in the background then there's an inconsistency there that needs to be addressed. I know for a fact that at MAN the runways are not entirely level so how are we supposed to decifer exactly what a level picture is? Something I've felt for a while needs clarification.

Karl
 
Psych
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RE: Level Rejections

Tue Jan 01, 2008 9:41 am

Quoting JakTrax (Reply 3):
so how are we supposed to decifer exactly what a level picture is?

This rule is clear really - a photo has to look level. If it looks level then it is level, unless there is a reliable reference in the photo that is clearly 'out' as a result. Also, don't rely on focusing in on small vertical references - they can be misleading.

In your photos Bjorn, you have large vertical references and, in this context, I would argue they must look vertical (if there were no significant vertical references in a shot I would go for leveling a horizontal reference like a runway surface, even if it known not to actually be completely flat, like 23R at MAN, as Karl mentions). Your problem is that you have some significant potential horizontal references too, so focusing on one without reference to the other could prove problematic for the expert screening eye.

I have edited the photos below and drawn purple lines on the references I feel are of particular relevance here, with an initial focus on the horizontal reference, then cross-checking with the vertical references. You will see that, as a result, both photos have been rotated CCW by small amounts: 0.4 degrees for the Gulfstream and about 0.2 degrees for the MD-11. (I will purposely edit the post so that IE users will be able to see the linked photos).

Bjorn 1

Bjorn 2

Now you will have to decide whether these look any better   .

All the best for '08.

Paul

Edited initial post so the photos are visible for all viewers.

[Edited 2008-01-01 01:42:40]
 
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BjornVB
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RE: Level Rejections

Tue Jan 01, 2008 12:16 pm

Hi all,

Thanks for the help already... I simply decided to redo both pics from scratch, paying special attention to the level... and I admit the Gurlfstream is a tricky one  Smile

Anyway, both are in the queue again, waiting for the usual screening.

Hope you all had a fine night and wishing you lots of spotting fun for 2008!

Greets,
Björn
 
jorge1812
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Joined: Mon Apr 19, 2004 9:11 pm

RE: Level Rejections

Fri Jan 04, 2008 3:30 pm

Had this rejected for Level. What do you think. In my eyes and using the grid in PS I think it's level.
http://www.airliners.net/procphotos/...filename=20071226_THF_210707_1.jpg

Thanks.

georg
 
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acontador
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RE: Level Rejections

Fri Jan 04, 2008 4:02 pm

Hi Georg,

Did you level according to the glider? If you open it (and I didn't see it before), it instantly strikes you that it needs some counter clockwise rotation, as everything seems to be leaning to the right...and that glider is not horizontal! It's not much though, I would say about 0.2-0.3 ccw, but due to the many lines the effect is magnified.

Hope it helps  Smile !
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jorge1812
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Joined: Mon Apr 19, 2004 9:11 pm

RE: Level Rejections

Fri Jan 04, 2008 4:21 pm

Thanks for the help. I don' t know what I used for levelling when I worked on the pic months ago. Will probably give this shot a second try.

georg
 
Scotland1979
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RE: Level Rejections

Fri Jan 04, 2008 10:10 pm

You can try to look at the level of floor edge (mould line) at the back walls (compare on both side L and R) - you may notice a little CCW.

Just try to give you tip

Nice shot though!!
Jesus said "I am the Way and the Truth and the Life. No one comes to the Father except through Me" - John 14:6

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