Does the lens aperture...?


Status
Not open for further replies.

kcuf2

Senior Member
Dec 29, 2005
1,777
1
0
KFC
#4
lets say ur lens is 18-70mm f4-5.6. That means at 18mm, the biggest appeture u can use if f4. At 70mm, the biggest appeture u can use is f5.6.

BUT from 18-70mm, u can use even smaller apetures. for example at 18mm, u can also use f11 or f22, at 70mm, u can also use f11 or f22..

There is a limit on the biggest apeture u can use, but not the smallest one..

for those lens that say 70-200mm f2.8, this means that throughout the range from 70-200mm, u can use the big apeture of f2.8
 

#5
den wat is the f5.6 limit for? den is the aperture opening on the body or on the lens? :dunno:
its a zoom lens.. eg.. 70-300 f/3.5-5.6..
at 300mm, the maximum aperture you can use is f/5.6 only, you can't go any bigger but can stop down smaller to f11 or even smaller. at 70mm, will be max f/3.5
 

kcuf2

Senior Member
Dec 29, 2005
1,777
1
0
KFC
#6
den wat is the f5.6 limit for? den is the aperture opening on the body or on the lens? :dunno:
most of the oldest lens have the ring to adjust the apeture on the lens itself. because the older film slr camera cannot adjust the apeture using the body.

But now, the newer film slr such as F5 or F6, and all the Digital SLR can adjust the apeture on the body.

For nikon, if ur lens is 70-300 f4-5.6G or 70-200 f2.8G, the G means that the lens dun have a ring to control apeture. You got to use ur camera body to adjust it..
 

iboey

New Member
Jun 16, 2006
1,202
0
0
Eastern Singapore
www.iboey.com
#7
im using a film SLR but i can adjust the aperture settings on the body itself. Many thanx for the prompt replies that clear up my confusions :)
 

zac08

Senior Member
Feb 21, 2005
11,755
0
0
East
#8
im using a film SLR but i can adjust the aperture settings on the body itself. Many thanx for the prompt replies that clear up my confusions :)
Which SLR?

newer SLRs have controls dials on the camera to allow for aperture change (those with computer contacts on the lens and camera)

Old ones, MF ones are all manual and requires you to change the aperture by means of the aperture ring on the lens itself...
 

zac08

Senior Member
Feb 21, 2005
11,755
0
0
East
#10
you don't have a second control wheel on the back and you don't have an aperture ring on the lens. So the finger wheel changes the shutter speed and you have to cramp up your fingers to press a little shift button on the back while turning the same wheel to set the aperture. If you switch to an autoexposure mode, then the same little shift button and wheel dance will do exposure compensation. The amount of compensation is visible at all times in the viewfinder on the scale.
from the net... Google has the answers... ;)
 

Status
Not open for further replies.
Top Bottom