What do the numbers mean?


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KiamH

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Oct 7, 2006
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Sengkang
#1
Hi guys ( and gals )

Just want to ask.. Each time I read about some article mentioning a certain camera, there is always this number thingy ( xx - xxxmm ) followed by f/X. I think the f thingy is the aperture size right?
so what do the other one with a range mean? is it the lens? what is the significance of the number?
Someone pls enlighten me. Thanks.
 

noob117

New Member
Oct 16, 2006
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west
#2
example: canon EF 75-300mm f4-5.6 III usm
mm is the focal lengh 75 is the widest and 300 is the telephoto end.
the f is aperture.f4-5.6. at 75mm its f4 and 300mm its f5.6. :)
its like from end to end.:)
 

zac08

Senior Member
Feb 21, 2005
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East
#3
Hi guys ( and gals )

Just want to ask.. Each time I read about some article mentioning a certain camera, there is always this number thingy ( xx - xxxmm ) followed by f/X. I think the f thingy is the aperture size right?
so what do the other one with a range mean? is it the lens? what is the significance of the number?
Someone pls enlighten me. Thanks.
You're talking about camera (point and shoot type) or lenses?

If lenses, then noob117 has pointed it out for you. But on a PnS, the lens focal length is an estimated comparision to a 35mm format as the sensor size on a PnS is much smaller and the actual focal length is different.
 

KiamH

New Member
Oct 7, 2006
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Sengkang
#4
Thanks or the reply.

So, what makes a camera good?
does it mean that the wider the range of the focal length, the better it is??
and does it mean that a huge difference in aperture size equate to a good camera also?
 

zac08

Senior Member
Feb 21, 2005
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East
#5
Thanks or the reply.

So, what makes a camera good?
does it mean that the wider the range of the focal length, the better it is??
and does it mean that a huge difference in aperture size equate to a good camera also?
A camera is good when it can take wonderful pictures. ;)

Honestly speaking, it all depends on your usage, there is never a BEST camera, else it would have outsold everything else on the market....
 

kelvgoh

New Member
Oct 3, 2006
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Woodlands
kelvgoh.multiply.com
#6
Thanks or the reply.

So, what makes a camera good?
does it mean that the wider the range of the focal length, the better it is??
and does it mean that a huge difference in aperture size equate to a good camera also?
Bro, a camera is only as good as the photographer. It all depends on what you want to achieve and your budget. Longer focal length allows you to take shots from a greater distance, while the short focal length allows you more control of your subject and gives your picture a more nature depth.

Cheers

Kelvin
 

jbma

Senior Member
Dec 28, 2003
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Tampines
#7
May I humbly suggest that you go read some artilce about basic photography. You need to understand the whole concept and not just about one aspect of it. The aperture, shutter speed, ISO etc all works in relation to each other.
 

KiamH

New Member
Oct 7, 2006
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Sengkang
#10
Thanks to all for taking your time in educating me on photography. Appreciate it.
 

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