Go Back   Team-BHP > Around the Corner > Shifting gears


Reply
 
Thread Tools Search this Thread
Old 16th September 2009, 12:26   #1576
Distinguished - BHPian
 
jkdas's Avatar
 
Join Date: Sep 2005
Location: Thiruvananthapu
Posts: 9,635
Thanked: 1,343 Times
Default

Quote:
Originally Posted by tsk1979 View Post
To the pot of gold
Attachment 192037
Good one; nice timing
jkdas is offline   Reply With Quote
Old 16th September 2009, 12:38   #1577
Senior - BHPian
 
chevelle's Avatar
 
Join Date: Apr 2008
Location: sacto
Posts: 1,291
Thanked: 502 Times
Default

Quote:
Originally Posted by clevermax View Post
The the lowlights seems to be clipped. HDR should have some more details there. How did you take it and process it?
what does the term 'lowlights seem to be clipped' means? pardon my ignorance by i am still learning.

well i took 3 photos at different EV. it was 0, 2, -2. but i had to reject the third photo as it wasn't aligned properly. so used 0, 2 photos to make hdr.

then i went into detail enhancer and applied following settings

strength - around 65
color saturation - 69
light smoothing - 5
luminosity - 5
micro soothing -25
white clip - 0.13%
black clip - 0.17%
gamma - 1.79

using the above settings i got the pic shown here

thanks for your opinion
chevelle is offline   Reply With Quote
Old 16th September 2009, 13:06   #1578
Team-BHP Support
 
tsk1979's Avatar
 
Join Date: Feb 2005
Location: New Delhi
Posts: 22,852
Thanked: 15,407 Times
Default

Quote:
Originally Posted by 14000rpm View Post
nice pic. sharpen up the colours and PP it and it'll be awesome.
Quote:
Originally Posted by jkdas View Post
Good one; nice timing
Thanks. The pic has been sharpened(USM) and level correction applied.
The original is even draber
tsk1979 is offline   Reply With Quote
Old 16th September 2009, 15:22   #1579
BHPian
 
Torqueguru's Avatar
 
Join Date: Nov 2007
Location: Seattle
Posts: 277
Thanked: 161 Times
Default

@tsk
Superb shot. I liked it!
Regards,
TG.
Torqueguru is offline   Reply With Quote
Old 16th September 2009, 15:47   #1580
Senior - BHPian
 
clevermax's Avatar
 
Join Date: Jun 2006
Location: Tvm/Amsterdam
Posts: 1,565
Thanked: 360 Times
Default

Quote:
Originally Posted by chevelle View Post
what does the term 'lowlights seem to be clipped' means? pardon my ignorance by i am still learning.
The darker areas are completely dark - RGB=0,0,0 In a high dynamic range image, the details in the shadows also should be brought up to show what's in there, unless it is pitch dark in those places.

Similarly, the highlights also shouldn't get clipped. For example, RGB channel values per each pixel should not touch the peak values in any particular area so that the area just appear plain white.

So you may think that when you take the individual shots, the most underexposed shot should have some visible details in the highlights areas (instead of pure white) and the most over exposed shot should have something visible in the lowlight areas - No, it is not needed. If you are shooting RAW, the image will have more dynamic range than the LCD screens in cameras or the PC monitors can display. (32 bits per channel per pixel) So there is no need to have a big difference visually in terms of exposure in the individual RAW images.

Quote:
Originally Posted by chevelle View Post
well i took 3 photos at different EV. it was 0, 2, -2. but i had to reject the third photo as it wasn't aligned properly. so used 0, 2 photos to make hdr.
Hmm..with only two shots you won't get a nice looking HDR if there is a huge difference in the amount of light falling in various parts of the frame. In outdoors I think you should take at least 4 shots spaced at 2 EVs to get a decent HDR. I don't use the bracketing in my camera since it is only +or- 0.7 EV. I just click 4 or 5 pictures by rotating the exposure dial by two steps.

Quote:
Originally Posted by chevelle View Post
then i went into detail enhancer and applied following settings
strength - around 65
color saturation - 69
light smoothing - 5
luminosity - 5
micro soothing -25
white clip - 0.13%
black clip - 0.17%
gamma - 1.79
Can't comment on these settings because it can vary from picture to picture to produce a neat looking HDR. Don't go by the values, but go by the visual feedback you are getting when you change these values and finalize on it according to your liking. HTH

I trying to turn my attention away from HDR. As per the gurus here, exposure blending is what you need learn and I think it produces more realistic images having good dynamic range.

Last edited by clevermax : 16th September 2009 at 15:50.
clevermax is online now   Reply With Quote
Old 16th September 2009, 15:54   #1581
Senior - BHPian
 
chevelle's Avatar
 
Join Date: Apr 2008
Location: sacto
Posts: 1,291
Thanked: 502 Times
Default

Quote:
Originally Posted by clevermax View Post
The darker areas are completely dark - RGB=0,0,0 In a high dynamic range image, the details in the shadows also should be brought up to show what's in there, unless it is pitch dark in those places.

Similarly, the highlights also shouldn't get clipped. For example, RGB channel values per each pixel should not touch the peak values in any particular area so that the area just appear plain white.

So you may think that when you take the individual shots, the most underexposed shot should have some visible details in the highlights areas (instead of pure white) and the most over exposed shot should have something visible in the lowlight areas - No, it is not needed. If you are shooting RAW, the image will have more dynamic range than the LCD screens in cameras or the PC monitors can display. (32 bits per channel per pixel) So there is no need to have a big difference visually in terms of exposure in the individual RAW images.



Hmm..with only two shots you won't get a nice looking HDR if there is a huge difference in the amount of light falling in various parts of the frame. In outdoors I think you should take at least 4 shots spaced at 2 EVs to get a decent HDR. I don't use the bracketing in my camera since it is only +or- 0.7 EV. I just click 4 or 5 pictures by rotating the exposure dial by two steps.



Can't comment on these settings because it can vary from picture to picture to produce a neat looking HDR. Don't go by the values, but go by the visual feedback you are getting when you change these values and finalize on it according to your liking. HTH

Thanks a lot for info about darker areas in my photo. it was very informative. shall keep in mind the next time i do HDR.

i also don't use bracketing, i do it manually, that's why may be the third image didn't align properly.

i just gave you the settings that i did and felt i did recover some detail. like the original photo doesn't show 35 mph limit clearly, while after recovering detail it can be seen clearly among other things.

do you think dark clip and white clip settings would have helped from getting low highlights clipped?

also its too bad, h50 doesn't have RAW. have to make do with jpeg which also increases loss of quality
chevelle is offline   Reply With Quote
Old 16th September 2009, 16:03   #1582
Senior - BHPian
 
clevermax's Avatar
 
Join Date: Jun 2006
Location: Tvm/Amsterdam
Posts: 1,565
Thanked: 360 Times
Default

Quote:
Originally Posted by chevelle View Post
Thanks a lot for info about darker areas in my photo. it was very informative. shall keep in mind the next time i do HDR.

i also don't use bracketing, i do it manually, that's why may be the third image didn't align properly.
The software you use (Photomatix or PS?) will have option to align source images right? They can be aligned by matching horizontal and vertical shifts and by matching features.
clevermax is online now   Reply With Quote
Old 16th September 2009, 19:57   #1583
Senior - BHPian
 
chevelle's Avatar
 
Join Date: Apr 2008
Location: sacto
Posts: 1,291
Thanked: 502 Times
Default

Quote:
Originally Posted by clevermax View Post
The software you use (Photomatix or PS?) will have option to align source images right? They can be aligned by matching horizontal and vertical shifts and by matching features.
i used Photomatix. and yes there is an option to align, but after it aligned, it was looking horrible and could easily make out the misalignment.
chevelle is offline   Reply With Quote
Old 17th September 2009, 02:44   #1584
Senior - BHPian
 
Join Date: Sep 2008
Location: DL9C
Posts: 2,385
Thanked: 1,984 Times
Default

Have been glued to this thread for the past hour or so.. Some true masterpieces, I must say.

Heres a pic from my side,
Attached Images
 
Dry Ice is offline   Reply With Quote
Old 17th September 2009, 10:38   #1585
Team-BHP Support
 
Rudra Sen's Avatar
 
Join Date: Apr 2004
Location: Bangalore
Posts: 10,334
Thanked: 3,834 Times
Default

Not really a car photography in true sense. Last Sunday outing and four black cars from the group.

The Auto-Image thread-group.jpg
Rudra Sen is offline   Reply With Quote
Old 17th September 2009, 11:33   #1586
Senior - BHPian
 
rjstyles69's Avatar
 
Join Date: Sep 2006
Location: Bengalooru..
Posts: 4,343
Thanked: 784 Times
Default

Quote:
Originally Posted by Rudra Sen View Post
Not really a car photography in true sense. Last Sunday outing and four black cars from the group.

Attachment 193018
Actually the skies turned awesome post the shoot. Am sure you wouldn't have missed catching a glimpse. Nice one , I love the way it has turned out to be.
Here's one which I PP'ed .

The Auto-Image thread-dsc_3284-large.jpg
rjstyles69 is offline   Reply With Quote
Old 17th September 2009, 11:37   #1587
Senior - BHPian
 
kpzen's Avatar
 
Join Date: Oct 2004
Location: Faridabad
Posts: 5,528
Thanked: 1,524 Times
Default

Quote:
Originally Posted by Rudra Sen View Post
Not really a car photography in true sense. Last Sunday outing and four black cars from the group.

Attachment 193018
Sir,

New set of wheels for the Optra ?
kpzen is offline   Reply With Quote
Old 17th September 2009, 11:53   #1588
Team-BHP Support
 
Rudra Sen's Avatar
 
Join Date: Apr 2004
Location: Bangalore
Posts: 10,334
Thanked: 3,834 Times
Default

Quote:
Originally Posted by kpzen View Post
Sir,

New set of wheels for the Optra ?
Yes. you've spotted right. I haven't got time to shoot Optra with new wheels and tyres. Will do it soon but.
Rudra Sen is offline   Reply With Quote
Old 17th September 2009, 23:53   #1589
Team-BHP Support
 
tsk1979's Avatar
 
Join Date: Feb 2005
Location: New Delhi
Posts: 22,852
Thanked: 15,407 Times
Default The White Elephant at The Lake

Another shot I like
Name:  652459137_9o3NqL.jpg
Views: 414
Size:  220.6 KB
tsk1979 is offline   Reply With Quote
Old 19th September 2009, 13:55   #1590
Senior - BHPian
 
clevermax's Avatar
 
Join Date: Jun 2006
Location: Tvm/Amsterdam
Posts: 1,565
Thanked: 360 Times
Default

@tsk: Beautiful picture again..
clevermax is online now   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
The Official non-auto Image thread Rtech Shifting gears 17290 22nd August 2017 06:38
Automobile/Driving awareness Image thread SirAlec Shifting gears 2 31st August 2013 23:59
The Ultimate Car 'Cutaway-Image' thread! suhaas307 Technical Stuff 10 16th September 2012 14:36


All times are GMT +5.5. The time now is 18:41.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks