Issues with 20D kit lens? - DPChallenge Forums

07/24/2006 06:52:45 PM · #26

just one thing did you take the pics on wide angle????

07/24/2006 06:57:24 PM · #27

Originally posted by renefunk:

just one thing did you take the pics on wide angle????

WAIT, no - not wide angle. at 40mm and 55mm respectively.

Message edited by author 2006-07-24 18:58:30.

Canon EF 500mm f/4.0L IS USM

07/24/2006 07:02:07 PM · #28

ok then you have already copleat your sharp test,, try to shoot the 2 lenses at 40mm

rider

Canon EOS-7D

07/24/2006 07:03:44 PM · #29

if you are manuel focusing don't forget the diopter whell that might come into play?

07/24/2006 07:04:54 PM · #30

Originally posted by renefunk:

ok then you have already copleat your sharp test,, try to shoot the 2 lenses at 40mm

You mean instead of one at 40 and the other at 55?

07/24/2006 07:05:44 PM · #31

Originally posted by rider:

if you are manuel focusing don't forget the diopter whell that might come into play?

Good thought! But I am auto-focusing it (though manual focus has the same result)

07/24/2006 07:05:57 PM · #32

Originally posted by wee_ag:

Originally posted by renefunk:
ok then you have already copleat your sharp test,, try to shoot the 2 lenses at 40mm

You mean instead of one at 40 and the other at 55?

yeah the 2 on 40mm

07/24/2006 07:09:44 PM · #33

Originally posted by renefunk:

Originally posted by wee_ag:

Originally posted by renefunk:
ok then you have already copleat your sharp test,, try to shoot the 2 lenses at 40mm

You mean instead of one at 40 and the other at 55?

yeah the 2 on 40mm

Ok, well the 17-40 is for film (full sensor) and the kit lens is for the smaller sensor of the 20d. What should the kit 18-55 lens be taken at to be the same as 40mm full sensor lens?

07/24/2006 07:13:45 PM · #34

nope, just try and you will se the dirence ( use a tripod )

07/24/2006 07:18:09 PM · #35

Originally posted by renefunk:

nope, just try and you will se the dirence ( use a tripod )

?? I'll just eyeball it in the camera to get the same zoom size with the 18-55 lens as the 40mm.

Good idea with the tripod.

Thanks for spending some time to help me out!

dragonlady

Canon EOS-5D Mark III

07/24/2006 07:21:55 PM · #36

use a tripod, test another kit lens to see if it gives the same results with same settings...if it does, camera is problem...if it is sharp, then lens is problem...I have same lens, it is excellent, even if it is lightweight and cheap.

07/24/2006 07:31:37 PM · #37

Ok... new test results. The first is a $600 L series EF 17-40 f/4. The second is the kit lens EFS 18-55 f/3.5-5.6 (retail... $5?). Both cropped at 100%, with flash @ 40mm, 100 ISO, 1/60, f/4 (on the L lens) and f/4.5 (on the kit lens), sharpness all the way up in camera, RAW - on a tripod.

<- L lens

<- Kit lens

Message edited by author 2006-07-24 19:33:01.

07/24/2006 07:40:30 PM · #38

well hard to say, personally i dont think your 20 d havea problem, the 17 40 is not the best in sharpnest (especially for close object, it work better on landscapes) then you should use the sharp tool on the raw panel, and make good contrast, on both pics to see something

dont worry about your cam, i had the same doubs the fist time,