The Auto-Image thread

benbsb29 · 4th January 2010, 12:31

Tanveer, whatever happened to the tail lamps on your Safari?

tsk1979 · 4th January 2010, 16:37

benny, the shot is in IR. So the color of the glass does not matter, as red/white etc., all are equally permiable to IR. Thats why you see the silver of the reflector inside.
Since the windows do not have any reflective coating on the inside, they come out as "black"

benbsb29 · 4th January 2010, 16:50

Thanks Tanveer, and for a moment there i thought you got new taillamps ala the Swift aftermarket tail lamps.

clevermax · 4th January 2010, 21:36

@Tanveer
The IR shots of the safari looks as if they are shot in some other planet having a very
thin or no atmosphere. I think it has got to do with IR scattering less than visible light(?).

I like these shots very much, thinking of buying an IR filter

suhaas307 · 5th January 2010, 21:57

My little contribution to this thread!

An Audi A8 that I clicked about three years back!

robimahanta · 6th January 2010, 19:32

Quote:

Originally Posted by Rudra Sen

Member rbp's new i20. Shot yesterday. This is one hell of a good looking car.
Raghu, thanks a lot for giving me such long time.

Attachment 255569

Simply amazing! would love to know the exif and a little bit about the post processing? Say how may layers and what you did in each?

planet_rocker · 6th January 2010, 20:49

Sometime in 2007 IIRC:

When a gentleman from Bangalore used his Photo capturing device and touched it with his magic wand:
Name: 2.JPG
Views: 669
Size: 39.9 KB

Rudra Sen · 10th January 2010, 21:19

Second tracking shot on the same day (post #1758 here). Little more of the side as light was looking good for the body line. This was slightly on higher speed than the first one.

Hazard switch was on because few bikers were playing stunt on the road..

clevermax · 12th January 2010, 09:55

Quote:

Originally Posted by Rudra Sen

Second tracking shot on the same day (post #1758 here). Little more of the side as light was looking good for the body line. This was slightly on higher speed than the first one.
Hazard switch was on because few bikers were playing stunt on the road..
Attachment 262070

@Rudra
Just perfect. Can't believe it is shot in some Indian road. Lots of reflections of sky in the car, CPL not used intentionally?

Torqueguru · 12th January 2010, 10:13

@Rudra
Great shot. But why is there no motion blur in the area behind the car towards the side of the car?
Regards,
TG.

Rudra Sen · 12th January 2010, 10:34

Quote:

Originally Posted by clevermax

Lots of reflections of sky in the car, CPL not used intentionally?

CPL will make very little difference here. CPL also tends to pull down neutral shades like black. any reflected middle tone will disappear. Only advantage with CPL or ND is to pull down exposure two stops. This was shot with 50 ISO any way.

Quote:

Originally Posted by Torqueguru

But why is there no motion blur in the area behind the car towards the side of the car?

Motion blur is most effective (read visible) on the subjects getting into the frame (top/bottom). As they get into center zone of the frame though they're apparently moving, they look almost static compare to subjects close to frame edges. Degree of blur will depend on shutter speed. This is during 3/4th kind of diagonal framing as you see here. This is not the case during horizontal panning shot. If you happen to see any diagonal shot with total side blur then please understand that is from some desperate post job and not real. Try it out yourself.

Torqueguru · 12th January 2010, 11:24

@Rudra
I get what you are saying, and I did think about it, maybe the position of the car sort of completed covered up the gradual gradient of the blur into non blur, Thanks for the detailed explanation!
Regards,
TG.

clevermax · 13th January 2010, 17:07

Quote:

Originally Posted by Rudra Sen

CPL will make very little difference here. CPL also tends to pull down neutral shades like black. any reflected middle tone will disappear. Only advantage with CPL or ND is to pull down exposure two stops. This was shot with 50 ISO any way.

But isn't CPL also useful for cutting down some of the reflected light unlike an ND? I understand that it always pulls down 2 or 1.5 exposure stops anyway.

I'll assume that it could be possible to darken at least the windshield with a CPL here. I might be very wrong in that assumption

I think using a CPL will cut down some reflections but it will be looking uneven throughout the surface of the car in this shot.

tsk1979 · 13th January 2010, 17:09

clevermax, CPL will cut reflections from glass, but not from metal. Reason is that metal reflections are not polarized. For example, if you point the CPL at a mirror, you will still see reflection, no attenuation takes place as the back of the mirror is silver foil or similar metal coating.

So if you are shooting cars with CPL, you can eliminate reflections from the windshield glass. This will make interiors show. However on the body, the attenuation will be very less.

vivekiny2k · 13th January 2010, 21:33

actually there is some polarization depending upon the condition of body. From my experience, a clean waxed body does reflect light that can be cut using polarizer.

here is a video I took in 2007

YouTube - polarizer

5th January 2010, 21:57	#1820
suhaas307 Team-BHP Support Join Date: Aug 2009 Location: Bangalore Posts: 9,069 Thanked: 13,723 Times	My little contribution to this thread! An Audi A8 that I clicked about three years back! Attached Thumbnails

6th January 2010, 20:49	#1822
planet_rocker Senior - BHPian Join Date: Sep 2006 Location: Bong-land Posts: 2,323 Thanked: 426 Times	Once upon a time... Sometime in 2007 IIRC: When a gentleman from Bangalore used his Photo capturing device and touched it with his magic wand: Last edited by planet_rocker : 6th January 2010 at 20:56.

4th January 2010, 12:31	#1816
benbsb29 Team-BHP Support Join Date: Nov 2006 Location: Brisbane Posts: 10,084 Thanked: 14,077 Times View My Garage	Tanveer, whatever happened to the tail lamps on your Safari?

4th January 2010, 16:37	#1817
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,731 Thanked: 23,423 Times View My Garage	benny, the shot is in IR. So the color of the glass does not matter, as red/white etc., all are equally permiable to IR. Thats why you see the silver of the reflector inside. Since the windows do not have any reflective coating on the inside, they come out as "black"

4th January 2010, 16:50	#1818
benbsb29 Team-BHP Support Join Date: Nov 2006 Location: Brisbane Posts: 10,084 Thanked: 14,077 Times View My Garage	Thanks Tanveer, and for a moment there i thought you got new taillamps ala the Swift aftermarket tail lamps.

4th January 2010, 21:36	#1819
clevermax Senior - BHPian Join Date: Jun 2006 Location: Tvm/Amsterdam Posts: 2,112 Thanked: 2,869 Times View My Garage	@Tanveer The IR shots of the safari looks as if they are shot in some other planet having a very thin or no atmosphere. I think it has got to do with IR scattering less than visible light(?). I like these shots very much, thinking of buying an IR filter

10th January 2010, 21:19	#1823
Rudra Sen Team-BHP Support Join Date: Apr 2004 Location: Bangalore Posts: 11,746 Thanked: 6,828 Times View My Garage	Second tracking shot on the same day (post #1758 here). Little more of the side as light was looking good for the body line. This was slightly on higher speed than the first one. Hazard switch was on because few bikers were playing stunt on the road..

12th January 2010, 10:13	#1825
Torqueguru BHPian Join Date: Nov 2007 Location: Seattle Posts: 277 Thanked: 165 Times View My Garage	@Rudra Great shot. But why is there no motion blur in the area behind the car towards the side of the car? Regards, TG.

12th January 2010, 11:24	#1827
Torqueguru BHPian Join Date: Nov 2007 Location: Seattle Posts: 277 Thanked: 165 Times View My Garage	@Rudra I get what you are saying, and I did think about it, maybe the position of the car sort of completed covered up the gradual gradient of the blur into non blur, Thanks for the detailed explanation! Regards, TG.

13th January 2010, 17:09	#1829
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,731 Thanked: 23,423 Times View My Garage	clevermax, CPL will cut reflections from glass, but not from metal. Reason is that metal reflections are not polarized. For example, if you point the CPL at a mirror, you will still see reflection, no attenuation takes place as the back of the mirror is silver foil or similar metal coating. So if you are shooting cars with CPL, you can eliminate reflections from the windshield glass. This will make interiors show. However on the body, the attenuation will be very less.