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Narate · 13-04-2005, 11:02

Is there any tricks for achieving the best effects when using a digi camera?

The best way I have managed to do it so far is by zooming in on something and changing the focus to blurred so the close up image becomes sharp.

I have read about and have come across things about F-stop and altering the aperture but non where very clear.

all I want is something that is about 1 metre away from teh camera that is sharp and both the foreground nad background to be blurred.

Dusteh · 13-04-2005, 11:54

I've always ended up faking it in Photoshop because the camera never gets it right for me. But then its an artform that needs skill and more importantly a feckin expensive camera. I leave it to the professionals and get on with editing the results. As far as I'm aware the smaller the aperture the greater the depth of field?

lucidcreations · 14-04-2005, 04:50

Basically the larger the aperture the smaller the depth of field. The apeture value is a fraction of the lens diameter. So f2.8 is a large aperture and f22 is small.

For example:-

Setting you lens to f2.8 (larger apeture, the number is a fraction remember) will give u a smaller depth of field and the closer you get to an object the more obvious this small depth of field will become.

On the other end of the scale if you set the lens to f22 you will have a massive DOF. So on a landscape you would probably have sharp focus all the way to the horizon.

tomson · 14-04-2005, 05:05

Quote:

Originally Posted by lucidcreations

On the other end of the scale if you set the lens to f22 you will have a massive DOF. So on a landscape you would probably have sharp focus all the way to the horizon.

...but you will have to compensate for the tiny aperture by having a much, much longer exposure. Higher f-stop = the smaller aperture = less light entering.

Narate · 14-04-2005, 05:30

I can set my camera to have f2.2 / ISO 50 / 1/8 exposure and the DOF if barely noticable

Narate · 14-04-2005, 05:33

Thats about as good as I can get

lucidcreations · 14-04-2005, 06:43

eh? that's about right for f2.2. the focus has been lost after about 5 cm.

lucidcreations · 14-04-2005, 07:02

Have a look at the picture of the white chocolate shoe on the cake IMG_3278 I did at this wedding. http://www.lucidcreations.co.uk/wedding/ (sorry the web space is a bit slow).

I was about 1m away from the cake and it was shot on f1.8 in error, but you can see what I mean about the your shot being about right. BTW these are just proofs.

13-04-2005, 11:02	#1 (permalink)
Narate Royalty™ Join Date: Feb 2003 Location: Manchester (UK) Posts: 3,211	Depth of field Is there any tricks for achieving the best effects when using a digi camera? The best way I have managed to do it so far is by zooming in on something and changing the focus to blurred so the close up image becomes sharp. I have read about and have come across things about F-stop and altering the aperture but non where very clear. all I want is something that is about 1 metre away from teh camera that is sharp and both the foreground nad background to be blurred.

14-04-2005, 04:50	#3 (permalink)
lucidcreations Part of the 3 out of 4 Join Date: Feb 2003 Location: cheshire Posts: 2,081	Basically the larger the aperture the smaller the depth of field. The apeture value is a fraction of the lens diameter. So f2.8 is a large aperture and f22 is small. For example:- Setting you lens to f2.8 (larger apeture, the number is a fraction remember) will give u a smaller depth of field and the closer you get to an object the more obvious this small depth of field will become. On the other end of the scale if you set the lens to f22 you will have a massive DOF. So on a landscape you would probably have sharp focus all the way to the horizon. __________________ Jase

14-04-2005, 06:43	#7 (permalink)
lucidcreations Part of the 3 out of 4 Join Date: Feb 2003 Location: cheshire Posts: 2,081	eh? that's about right for f2.2. the focus has been lost after about 5 cm. __________________ Jase

14-04-2005, 07:02	#8 (permalink)
lucidcreations Part of the 3 out of 4 Join Date: Feb 2003 Location: cheshire Posts: 2,081	Have a look at the picture of the white chocolate shoe on the cake IMG_3278 I did at this wedding. http://www.lucidcreations.co.uk/wedding/ (sorry the web space is a bit slow). I was about 1m away from the cake and it was shot on f1.8 in error, but you can see what I mean about the your shot being about right. BTW these are just proofs. __________________ Jase

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13-04-2005, 11:54	#2 (permalink)
Dusteh Sir digby chicken caesar Join Date: Sep 2004 Posts: 4,061	I've always ended up faking it in Photoshop because the camera never gets it right for me. But then its an artform that needs skill and more importantly a feckin expensive camera. I leave it to the professionals and get on with editing the results. As far as I'm aware the smaller the aperture the greater the depth of field?

14-04-2005, 05:30	#5 (permalink)
Narate Royalty™ Join Date: Feb 2003 Location: Manchester (UK) Posts: 3,211	I can set my camera to have f2.2 / ISO 50 / 1/8 exposure and the DOF if barely noticable

14-04-2005, 05:33	#6 (permalink)
Narate Royalty™ Join Date: Feb 2003 Location: Manchester (UK) Posts: 3,211	Thats about as good as I can get

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