The Official non-auto Image thread

benbsb29 · 5th April 2007, 14:04

OFF TOPIC

@Robin : Happens, pal... no offense taken.

sinner · 5th April 2007, 15:46

Gazzing the Summer Sun

Samurai · 5th April 2007, 15:53

Quote:

Originally Posted by Rtech

Benson, if that was Mumbai, those three would be hauled up by the cops and arrested for indecency!

Sitting at the beach fully clothed is indecent in Mumbai now?

navdeep · 5th April 2007, 16:05

Ring of Fire

Rtech · 5th April 2007, 16:08

Quote:

Originally Posted by Samurai

Sitting at the beach fully clothed is indecent in Mumbai now?

Yup. Apparently "we are Indians and not supposed to show affection in public". But, thats for another thread!

maxbhp · 5th April 2007, 19:03

Whats the reason for the grains in the pics ?

pawan · 5th April 2007, 21:02

well here are a fewpics of me and my friends catching a russles viper:

thats me in the last three pics catching the snake.

Wimwian · 5th April 2007, 22:34

Did you take them in low light? 'cause it looks like the light wasn't sufficient, so the digicam would've compensated by increasing the ISO rating (film speed equivalent) leading to the grains.

tsk1979 · 5th April 2007, 23:00

the grain is sensor noise, and is the bane of small sensors.
As you cram more and more megapixels on the small sensor, noise increases.
DSLRS have larger sized sensors so are reasonably clean at around 1600 ISO too for Canon's and around ISO 800 for Oly's
P&S camera's cant do much above ISO 200, except for the Fuji's with their revolutionary super CCD sensor.
In P&S they do extensive noise reduction to get rid of noise, but that hits detail.
As they say, there is no free lunch

condor · 5th April 2007, 23:19

TSK, wouldn't area in focus also be a reason here? If you look at the second pic, the stalk in the middle is in focus, while the rest of the pic is not.

Samurai · 5th April 2007, 23:27

Quote:

Originally Posted by tsk1979

DSLRS have larger sized sensors so are reasonably clean at around 1600 ISO too for Canon's and around ISO 800 for Oly's

Make it 400 for Olympus, although I have heard that latest ones like E-400 have improved.

tsk1979 · 5th April 2007, 23:35

Quote:

Originally Posted by condor

TSK, wouldn't area in focus also be a reason here? If you look at the second pic, the stalk in the middle is in focus, while the rest of the pic is not.

condor, the grain in digicam pics is noise, nothing to do with focus etc.,
Its just that when the object is in sharp focus and light is good, the grain is not noticeable.
Therefore there is the concept of "shadow noise", i.e. noise is more visible in shadows.
When I shoot scenes with start shadows at ISO 1600, the noise is noticeable, but if scene is lit more uniformly(albeit low light only) it is less noticeable.

Look at this pic. ISO 1600, but noise is very less. Only in the tree shadow its more noticeable

maxbhp · 5th April 2007, 23:59

Samurai · 6th April 2007, 00:22

Quote:

Originally Posted by sinner

Gazzing the Summer Sun

Extremely well taken sinner, the object is really sharp and perfectly off-center, and reasonable bokeh. Post in 800x600 if possible.

Quote:

Originally Posted by maxbhp

maxbhp, you should try to get either the moon or the tree in sharp focus. Both out of focus won't do any good.

Look at this one, tree in focus.

navin_bhp · 6th April 2007, 03:09

Luv your pic Samurai sir

5th April 2007, 16:05	#844
navdeep BHPian Join Date: Sep 2006 Location: Pune Posts: 892 Thanked: 4 Times	Ring of Fire Last edited by navdeep : 5th April 2007 at 16:07.

5th April 2007, 22:34	#848
Wimwian BHPian Join Date: Feb 2007 Location: Mumbai Posts: 190 Thanked: 5 Times View My Garage	Did you take them in low light? 'cause it looks like the light wasn't sufficient, so the digicam would've compensated by increasing the ISO rating (film speed equivalent) leading to the grains. Last edited by Rtech : 6th April 2007 at 09:24. Reason: dont quote entire posts.

5th April 2007, 23:59	#853
maxbhp Senior - BHPian Join Date: May 2006 Location: C C K Posts: 1,383 Thanked: 92 Times View My Garage	Another pic

5th April 2007, 14:04	#841
benbsb29 Team-BHP Support Join Date: Nov 2006 Location: Brisbane Posts: 10,104 Thanked: 14,189 Times View My Garage	OFF TOPIC @Robin : Happens, pal... no offense taken.

5th April 2007, 15:46	#842
sinner BHPian Join Date: Feb 2005 Location: Thane - Mumbai Posts: 433 Thanked: 77 Times View My Garage	Gazzing the Summer Sun

5th April 2007, 19:03	#846
maxbhp Senior - BHPian Join Date: May 2006 Location: C C K Posts: 1,383 Thanked: 92 Times View My Garage	Whats the reason for the grains in the pics ?

5th April 2007, 21:02	#847
pawan BHPian Join Date: Sep 2006 Location: auckland, new zealand Posts: 867 Thanked: 5 Times	well here are a fewpics of me and my friends catching a russles viper: thats me in the last three pics catching the snake.

5th April 2007, 23:00	#849
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,695 Thanked: 23,484 Times View My Garage	the grain is sensor noise, and is the bane of small sensors. As you cram more and more megapixels on the small sensor, noise increases. DSLRS have larger sized sensors so are reasonably clean at around 1600 ISO too for Canon's and around ISO 800 for Oly's P&S camera's cant do much above ISO 200, except for the Fuji's with their revolutionary super CCD sensor. In P&S they do extensive noise reduction to get rid of noise, but that hits detail. As they say, there is no free lunch

5th April 2007, 23:19	#850
condor Distinguished - BHPian Join Date: Jun 2006 Location: Speed-brkr City Posts: 16,240 Thanked: 16,888 Times View My Garage	TSK, wouldn't area in focus also be a reason here? If you look at the second pic, the stalk in the middle is in focus, while the rest of the pic is not.

6th April 2007, 03:09	#855
navin_bhp BHPian Join Date: Jan 2007 Location: Redmond, WA Posts: 157 Thanked: 35 Times View My Garage	Luv your pic Samurai sir