18-55mm kit lens softness? or is it just me...


Status
Not open for further replies.

ilario

New Member
Dec 2, 2007
165
0
0
29
#1
Took these shot some time ago with the kit lens. The rest of the pictures have similar softness too.

1/4 sec, f27, iso 100, 24mm, no flash, center weighted metering, AF-S mode. Mounted on tripod.



a crop:


Am I using too high an aperture value, is it an issue with the lens, or any sort of problem? :dunno:
Thanks!
 

overdodo

New Member
Mar 19, 2006
509
0
0
#2
The aperture at f27 is most probably the cause.

Too small aperture, diffraction of light becomes an issue.

Try taking a shot at f8.



cheers
 

ilario

New Member
Dec 2, 2007
165
0
0
29
#4
Thanks... so i see that the most extreme apertures of a lens is always the worse part? Never thought of f27 cuz i always thought only the wide end is bad.. cuz got tripod and want everything sharp so kiasu lor :D;p
 

catchlights

Moderator
Staff member
Sep 27, 2004
21,903
46
48
Punggol, Singapore
www.foto-u.com
#7
the sweet spot of most lens are two to three stop down.

with wide angle, f11 can cover a lot depth of field, don't need to shoot above f22, you get diffraction more then depth of field.
 

night86mare

Deregistered
Aug 25, 2006
25,541
0
0
www.pbase.com
#9
f/8 to f/11 is the best for the kit lens from my experience

above f/16 you start getting diffraction problems, will degrade picture quality

which is why most of the time most professional landscape photographers will limit their apertures to at around f/13 to f/19.. you slowly trade off depth of field for sharpness

for kit lens, pentax's version is one of the best out there, believe me; i've seen other brands and for the price, it doesn't come any better than this. even most tests agree.

shooting wide-open will give you softness too, btw
 

ilario

New Member
Dec 2, 2007
165
0
0
29
#10
i see... thanks for being so informative! Next time i'll be sure to shoot between f8~f16. :)
 

Status
Not open for further replies.
Top Bottom