Lens and aperture advice please.

onform

onform

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matt
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Can anyone tell me at what focal length and aperture the 24-70 2.8L is sharpest at?

And also if shooting at 35mm on full frame body from around 2 1/2 - 3 metres away what would the lowest aperture I could use for a three person deep group of people?

Cheers

Matt
 
The minimum focusing distance for the 24-70 is 0.38 metres. As for Aperture settings it, it depends on how you want to compose the image.

The bigger the apertures used (f2.8), the zone of sharpness is shallower or vice versa i.e. smaller aperture used (f16) will has extended depth of field. Wide angle lenses have extended field of sharpness than a longer focal length telephoto lenses and/or longest reach focal length on your zoom lens), and the nearer the subject is, the shallower the zone of sharpness and vice versa

For example: use larger aperture (Smaller number like f/2.8, f/2.0 etc.) with a long focal length to isolate or emphasis on expression, such as in portraiture photography; or use a smaller aperture (Bigger number like f/16 or f/22 etc..) to ensure pin-sharp details in both the foreground and the background.

Reminder:- the key to good EXPOSURE = Aperture + Shutter speed

Experiment with settings and see which ones you like

Peter
 
Very well explained pete.
 
Sorry pete wasn't ignoring you I posted then had to go out.

Thanks for taking time to type all that, but I already now about shutter speeds and apertures I was more after the sharpest part, all zoom lenses have a sharpest point in the focal range and a certain aperture, of that specific lens.
 
pete.rush said:
The minimum focusing distance for the 24-70 is 0.38 metres. As for Aperture settings it, it depends on how you want to compose the image.

The bigger the apertures used (f2.8), the zone of sharpness is shallower or vice versa i.e. smaller aperture used (f16) will has extended depth of field. Wide angle lenses have extended field of sharpness than a longer focal length telephoto lenses and/or longest reach focal length on your zoom lens), and the nearer the subject is, the shallower the zone of sharpness and vice versa

For example: use larger aperture (Smaller number like f/2.8, f/2.0 etc.) with a long focal length to isolate or emphasis on expression, such as in portraiture photography; or use a smaller aperture (Bigger number like f/16 or f/22 etc..) to ensure pin-sharp details in both the foreground and the background.

Reminder:- the key to good EXPOSURE = Aperture + Shutter speed

Experiment with settings and see which ones you like

Peter
Click to expand...

Actually I would say is the key to good exposure = Aperture + Shutter Speed + ISO

ISO will help obtain the SS & Av you require.
 
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