| Author | Thread |
|
|
07/12/2006 02:23:42 PM · #1 |
I shot each image, one with a 100-400L and the other with a 24-105L both set at 100mm. Do you think there should be this much diffence between the two? I find one is much softer. Any comments would be welcomed.
 |
|
|
|
07/12/2006 02:25:16 PM · #2 |
| Not a lens expert...which pic = which lens? |
|
|
|
07/12/2006 02:25:23 PM · #3 |
What were your settings? Aperture? Shutter Speed? Were they the same?
|
|
|
|
07/12/2006 02:26:24 PM · #4 |
The first one looks much softer to me. I dont know much about lens quality and such but I do concur with you in the first one looking softer(if thats the one you thought looked softer) otherwise maybe im just confusing you more. lol . did you use a tripod? was there any wind? are you sure its not just slightly out of focus for those reasons? HTH
edited for spelling
Message edited by author 2006-07-12 14:27:21. |
|
|
|
07/12/2006 02:27:35 PM · #5 |
Handheld or tripod? If the former, you can't learn a thing from the comparison. Even if on a tripod, cable release or press-shutter-by-hand? If the latter, you can't learn a thing from the comparison. Autofocus or manual focus? Man, the potential variables are endless...
R.
|
|
|
|
07/12/2006 02:33:42 PM · #6 |
Both hand held speed 200 f5.6 with IS on. I also get the same results with each on a tripod. The softer is the 24-105. I have had the
100-400 for a while and like the quality. Trying to decide if I should send the 24-105 back Auto focus
Message edited by author 2006-07-12 14:34:15. |
|
|
|
07/12/2006 02:39:06 PM · #7 |
All things being equal and using a tripod... I would say yes... seems to be a focus problem.
|
|
|
|
07/12/2006 03:48:49 PM · #8 |
Are these the full images, or are they crops from the images?
I can't tell for sure, but it looks like the left shot is front-focused. The tip of the leaf at left center seems sharp. You'd need to look at both originals at 100% to be sure.
The 24-105, from almost all reports is very sharp. The 100-400 is a darn good lens as well, but would be surprised if it was superior to the 24-105 by that kind of margin. |
|
|
|
07/12/2006 03:50:41 PM · #9 |
Originally posted by kirbic:
Are these the full images, or are they crops from the images?
I can't tell for sure, but it looks like the left shot is front-focused. The tip of the leaf at left center seems sharp. You'd need to look at both originals at 100% to be sure.
The 24-105, from almost all reports is very sharp. The 100-400 is a darn good lens as well, but would be surprised if it was superior to the 24-105 by that kind of margin. |
I was thinking the same thing, but the same leaf is pretty darn sharp on the other image too.
|
|
|
|
07/12/2006 03:53:39 PM · #10 |
| They were cropped. For some reason I think this lens is somewhat soft. At this time I am really not sure what to do. I have only one day left to return it. |
|
|
|
07/12/2006 03:59:13 PM · #11 |
Originally posted by Palmetto_Pixels:
Originally posted by kirbic:
Are these the full images, or are they crops from the images?
I can't tell for sure, but it looks like the left shot is front-focused. The tip of the leaf at left center seems sharp. You'd need to look at both originals at 100% to be sure.
The 24-105, from almost all reports is very sharp. The 100-400 is a darn good lens as well, but would be surprised if it was superior to the 24-105 by that kind of margin. |
I was thinking the same thing, but the same leaf is pretty darn sharp on the other image too. |
Yes... I think that the left image (24-105) was front-focused, and you just caught the tip of the leaf within the DoF; the flower is OOF. There really are not many explanations possible other than focus error if there is an element in the shot that *is* sharp. It is pretty hard to tell conclusively from these two shots, though.
Whether to return and risk another copy or to send it to Canon for calibration under warranty is a tough choice here. Be advised that Canon might want both the body and the lens if you choose the latter path. |
|
|
|
07/12/2006 04:00:55 PM · #12 |
Thanks for your input. I am going to take a few more test shots and then decide.
Thanks again |
|
|
|
07/12/2006 04:01:20 PM · #13 |
If both photos are hand held, there is a huge variable that you can't account for. Try again on a tripod.
|
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2026 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 01/03/2026 12:07:03 AM EST.
