Digital Photography FAQ - Page 2

Theoretical_Photographer · 9th Mar 2004, 01:02 AM

Quote:

Originally Posted by lung

I have a Question: What do the different ISO numbers usually mean? I notice that with a higher ISO setting, the shutter speed is slower... But apart from that? Which ISO setting is best used in which environment?

Generally in low light you will use a higher ISO and in bright light you can use a lower ISO. The lowest ISO you can get away with is best, as this will give the least picture noise

Note : rest of post is based on my current understanding of ISO equivalents

ISO on digital cams is confusing (well to me). On analogue cam it is a measurement of film sensitivity and with more sensitive film the film grains increased, reducing quality. On digital cams I think CCD is used to emulate this effect, having the same good and bad effect.

So if a lower ISO is best, why change it?

If you don’t need to don’t! But sometimes you must. Like when taking stop-action shot in low light, and astronomic photography. You can reduce the need to change your ISO with correct Aperture and exposure times (shutter speeds).

Seblington · 18th Apr 2004, 11:43 PM

just a note on Trinity's FAQ's, most digital cameras today can record video, but it is not of good quality as they are designed for picture taking. I have been interested in the video side of things on stills in most of the cameras I have had, from my early DSC-50 (10pfs @15sec intervals) to my current DSC-F717 (16fps no time limit). This is pretty poor to the Fuji 7000s (30fps 1 minuet intervals) and the best I have seen is the F828 (30fps no time limit) but I have heard problems about its focus whilst recording.

elton · 10th Aug 2004, 08:03 PM

I prefer took shoot without any flash... except it is too dark in the night then have no choice...

But if u manual set in the dark night use around 2sec Shutter i also can take a dark night pic also.... if u can hold you camera without shaking...

TIPS.... in order to hold your camera properly.... You can hold it stick to your chest and hold your breath then take the shoot... it will help for those ppl hand keep in shaking...

jinongman · 25th Nov 2004, 01:33 AM

How does the aperture work ?
How do i know how much for what conditions ?

and what about the focus ?

zy · 25th Nov 2004, 12:19 PM

Quote:

Originally Posted by jinongman

How does the aperture work ?
How do i know how much for what conditions ?

and what about the focus ?

your camera have manual aperture settings?

its something to do with the opening in the camera which aloows the light to go through ler..

the smaller then number the bigger the opening ..
smaller number means faster shutter.

u suck.com · 18th Dec 2004, 11:18 AM

errr...what does aperture mean ? is it the ISO thing?

CleanSerious5 · 18th Dec 2004, 12:29 PM

no Dc can take night scene perfectly w/o tripod 2date?

Chai · 18th Dec 2004, 12:31 PM

Aperture is the opening size of the shutter.

ISO is the light sensitivity. Lower ISO = less sensitive to light = darker picture.

zy · 18th Dec 2004, 01:25 PM

Quote:

Originally Posted by CleanSerious5

no Dc can take night scene perfectly w/o tripod 2date?

you should not move the camera when you are trying to take night sceneshots

tripod is the best method because you can adjust it

CleanSerious5 · 18th Dec 2004, 02:40 PM

18th Apr 2004, 11:43 PM	#12 (permalink)
Seblington Warming up Join Date: 18 Apr 2004 Posts: 140 Reputation: 297 Rep Power: 8	Digital cameras as video cameras? just a note on Trinity's FAQ's, most digital cameras today can record video, but it is not of good quality as they are designed for picture taking. I have been interested in the video side of things on stills in most of the cameras I have had, from my early DSC-50 (10pfs @15sec intervals) to my current DSC-F717 (16fps no time limit). This is pretty poor to the Fuji 7000s (30fps 1 minuet intervals) and the best I have seen is the F828 (30fps no time limit) but I have heard problems about its focus whilst recording. __________________ Seblington of Devon. England ---- Using the Sony DSC-F828 (For video now) Pictures taken from 2008 taken with the Canon 40D Avatar picture is of the front of my Mini Cooper ---- Computer specs: P4 2.8GHz HT 2GB Dual channel PC4000, 37GB Raptor 10K WD C drive, 500GB WD work drive, Nvidia Geforce 6600GT, SB Audigy with breakout box, all rack mounted. --- Check out Webshots And Vintage Recorders

10th Aug 2004, 08:03 PM	#13 (permalink)
elton WhAtSuPdOc Join Date: 22 Nov 2002 Location: Any place that have COM with NET Posts: 2,832 Reputation: 828 Rep Power: 18	I prefer took shoot without any flash... except it is too dark in the night then have no choice... But if u manual set in the dark night use around 2sec Shutter i also can take a dark night pic also.... if u can hold you camera without shaking... TIPS.... in order to hold your camera properly.... You can hold it stick to your chest and hold your breath then take the shoot... it will help for those ppl hand keep in shaking... __________________ Elton Tan IBM ThinkPad R60 AMD Barton 2500+ Abit NF7-S V(2.0) Corsair 256MBX2 PC3200 Seagate SATA 80GB Radeon 9200 SE 128MB Altec Lansing ACS 56 Sony Clie TH-55

18th Dec 2004, 11:18 AM	#16 (permalink)
u suck.com ■ ■ ■ ■ Join Date: 20 Nov 2003 Location: where? Posts: 3,764 Reputation: 552 Rep Power: 15	errr...what does aperture mean ? is it the ISO thing? __________________

18th Dec 2004, 12:31 PM	#18 (permalink)
Chai Administrator Join Date: 6 Oct 2002 Location: Maranello Posts: 27,884 Reputation: 4630 Rep Power: 81	Aperture is the opening size of the shutter. ISO is the light sensitivity. Lower ISO = less sensitive to light = darker picture. __________________ Chai (Contributor & Forum Admin) http://www.techarp.com/

25th Nov 2004, 01:33 AM	#14 (permalink)
jinongman Super Active Join Date: 16 Oct 2003 Location: melbourne Posts: 1,778 Reputation: 145 Rep Power: 9	How does the aperture work ? How do i know how much for what conditions ? and what about the focus ?

18th Dec 2004, 12:29 PM	#17 (permalink)
CleanSerious5 Banned Join Date: 12 May 2003 Location: $g Posts: 4,274 Reputation: -163 Rep Power: 0	no Dc can take night scene perfectly w/o tripod 2date?

18th Dec 2004, 02:40 PM	#20 (permalink)
CleanSerious5 Banned Join Date: 12 May 2003 Location: $g Posts: 4,274 Reputation: -163 Rep Power: 0