Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies. Read More.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses
Thread started 06 Sep 2017 (Wednesday) 11:09
Prev/next
sponsored links
(this ad will go away when you log in as registered member)

To repair or not...

 
gorben
Member
Joined Mar 2014
Sep 06, 2017 11:09 |  #1

Hello,

I just sent my camera (5DIII) and lens (24-105L) to Canon for regular maintenance. I told them to take a look at the lens because it was particularly soft on the edges. They came back to me with a manual autofocus issue and they have to change the USM. It would cost me $300. I payed this lens $450 4 years ago, I am not sure it is worth it.

I would no mind injecting a little more cash to get a better/newer one. The f2.8 is out of budget and I don't think I would like the range too much. 70 may be a bit too wide.

What do you think? What are the other options?

Thanks!


Canon 5DIII, 24-105L, 100-400L vII, 50 f/1.4, 100 f/2.0, 100L f2.8 macro
Fuji X-T10, 18-55 & 27
FlickR (external link)

LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as registered member)
CheshireCat
Goldmember
CheshireCat's Avatar
2,303 posts
Joined Oct 2008
*** vanished ***
Post has been edited 2 months ago by CheshireCat.
Sep 06, 2017 14:27 |  #2

What is "Manual autofocus" ? :)

I'd sell the lens as defective for what you can get, and add more money to get a couple primes.


1Dx, 5D2 and some lenses

LOG IN TO REPLY
saea501
... spilled over a little on the panties
saea501's Avatar
Joined Jan 2010
Florida
Post has been edited 2 months ago by saea501.
Sep 06, 2017 14:33 as a reply to CheshireCat's post |  #3

I was wondering the same thing....manual autofocus...?

I'm wondering too....if the pictures from that lens are soft on the edges, how is changing the autofocus motor going to change that? The motor makes it's focus adjustments across the entire image...that is, it can't make focus soft at the outer edge and sharp in the center.


Remember what the DorMouse said.....feed your head.
Bob

LOG IN TO REPLY
gorben
THREAD ­ STARTER
Member
Joined Mar 2014
Sep 06, 2017 15:39 |  #4

Yeah that does not make sense. Sorry I was taking shortcut. The exact issue is "The unit does not focus properly in manual mode. The unit requires the USM for repair."

I noticed the softness at the edge because it is really obvious on my 13*19" prints. I asked them to see if there was a mis-aligned component because I had the feeling that the left side was softer than the right one. They found a focusing issue. Center seems sharp though. maybe not as good as before. I should check that.

I don't want to replace that lens with prime. I already have some on that range. The zoom is my travel "light" with family gear. More and more it is my most used lens. I love the range.


Canon 5DIII, 24-105L, 100-400L vII, 50 f/1.4, 100 f/2.0, 100L f2.8 macro
Fuji X-T10, 18-55 & 27
FlickR (external link)

LOG IN TO REPLY
CheshireCat
Goldmember
CheshireCat's Avatar
2,303 posts
Joined Oct 2008
*** vanished ***
Post has been last edited 2 months ago by CheshireCat. 2 edits done in total.
Sep 06, 2017 16:33 as a reply to gorben's post |  #5

Sorry, that does not make sense either.

You obviously don't take the shot when using MF until you see the subject in focus.
Set the lens in Live View mode, enter maximum magnification, and see if the lens can properly center-focus on the subject. I.e. without hunting for more than 2 seconds.
If it can, then check the center.
If the center is sharp, then check edges and corners of the image.
If edges and corners of the image are awfully blurred, then you have a defective lens.

A picture is worth 1000 words, so post 100% crops of the center and the worst corner.


1Dx, 5D2 and some lenses

LOG IN TO REPLY
gorben
THREAD ­ STARTER
Member
Joined Mar 2014
Sep 06, 2017 17:22 |  #6

Well, I don't have the lens now because it is at Canon's repair center but I can get some images to illustrate when I get home.

As for the issue, those are the exact words from Canon. "The unit does not focus properly in manual mode. The unit requires the USM for repair." :-|


Canon 5DIII, 24-105L, 100-400L vII, 50 f/1.4, 100 f/2.0, 100L f2.8 macro
Fuji X-T10, 18-55 & 27
FlickR (external link)

LOG IN TO REPLY
FarmerTed1971
fondling the 5D4
FarmerTed1971's Avatar
Joined Sep 2013
Portland, OR
Sep 06, 2017 17:33 |  #7

I'd not spend that much on that particular lens. Craigslist has them all the time for $450.

Ask them how much to trade it in on a II refurb... perhaps you can get a deal.


Getting better at this - Fuji Xt-2 - Fuji X-Pro2 - 18-55 - 35 f2 WR - 50-140 - 6D - 135L - 70-200 f4L IS - 600EX-RT x2 - ST-E3-RT - flickr (external link) - www.scottaticephoto.co​m (external link)

LOG IN TO REPLY
Charlie
Guess What! I'm Pregnant!
13,718 posts
Gallery: 2 photos
Joined Sep 2007
Sep 06, 2017 18:42 |  #8

FarmerTed1971 wrote in post #18446209 (external link)
I'd not spend that much on that particular lens. Craigslist has them all the time for $450.

Ask them how much to trade it in on a II refurb... perhaps you can get a deal.

I'de get it repaired. 300 is still better than 450, and on top of that you'de have a warranty for some time for you go over the lens. Buying a used lens has its risk as well.

lastly, you can negotiate on the repair price, and save a good amount.


Sony A7rii x2 - FE 12-24/4 - FE 24-240 - FE 35/2.8 - CV 35/1.7 - FE 50/1.8 - FE 85/1.8 - EF 135/1.8 Art - F 600/5.6 - CZ 35-70, 100-300 - Astro Rok 14/2.8, 24/1.4 - Tamron 28-75 f2.8, 70-200 f2.8 VC

LOG IN TO REPLY
gorben
THREAD ­ STARTER
Member
Joined Mar 2014
Post has been last edited 2 months ago by gorben. 2 edits done in total.
Sep 07, 2017 21:17 |  #9

Thanks for the suggestion. I have asked Canon for more details and here is their answer "The repair notes indicate that the images seem overly soft around the edges and that the unit does not focus properly in manual mode. Also, the USM motor assembly is required for this repair." Still not that clear. They proposed that I contact their Canon upgrade program to see if I can have something else. Anyone has experience with this program? Is it worth it?

Below are some crop of this lens. Maybe it is just me imagining things.

HOSTED PHOTO
please log in to view hosted photos in full size.

HOSTED PHOTO
please log in to view hosted photos in full size.

Canon 5DIII, 24-105L, 100-400L vII, 50 f/1.4, 100 f/2.0, 100L f2.8 macro
Fuji X-T10, 18-55 & 27
FlickR (external link)

LOG IN TO REPLY
gorben
THREAD ­ STARTER
Member
Joined Mar 2014
Sep 07, 2017 21:20 |  #10

And crop from left and right. I feel the left side is softer. Especially it looks like there is a clear cut right in the middle of El captain. One side is "sharp" one side is soft.

HOSTED PHOTO
please log in to view hosted photos in full size.

HOSTED PHOTO
please log in to view hosted photos in full size.

Canon 5DIII, 24-105L, 100-400L vII, 50 f/1.4, 100 f/2.0, 100L f2.8 macro
Fuji X-T10, 18-55 & 27
FlickR (external link)

LOG IN TO REPLY
CheshireCat
Goldmember
CheshireCat's Avatar
2,303 posts
Joined Oct 2008
*** vanished ***
Post has been last edited 2 months ago by CheshireCat. 3 edits done in total.
Sep 07, 2017 22:11 as a reply to gorben's post |  #11

Thanks for posting crops. It is worth noting they are at f/8.
Center crop is nothing to call home about but it is acceptable to me, while the corners are definitely bad.
My very personal guess is that your lens is decentered.

I stand by my opinion that the "autofocus in manual mode" thing is not only BS but an embarrassing statement for that Canon repair center. Please let me know which Canon center it is, so I'll make sure to never use them.


1Dx, 5D2 and some lenses

LOG IN TO REPLY
gorben
THREAD ­ STARTER
Member
Joined Mar 2014
Sep 08, 2017 14:26 |  #12

So... I gave a call to Canon to find out about their loyalty/upgrade program. They offer me $20 to reward my loyalty with Canon (CPS gold...) for my lens if I buy a new one at retail price... really??
This kind of things really makes me reconsider my loyalty. Anyway, I will get my lens back, use it until it dies and then sell it for parts.

BTW, it is Canon in Virginia. Second time I sent anything there, second time they messed up. First time it was the 100-400L II under warranty because the AF quit working. They sent me back a damaged lens. I sent it back again for repair and they returned me a lens that was not as good optically as the one I sent initially.

Never that center again for me.


Canon 5DIII, 24-105L, 100-400L vII, 50 f/1.4, 100 f/2.0, 100L f2.8 macro
Fuji X-T10, 18-55 & 27
FlickR (external link)

LOG IN TO REPLY
wunhang
Senior Member
wunhang's Avatar
650 posts
Joined Nov 2009
SoCal
Post has been edited 2 months ago by wunhang.
Sep 08, 2017 14:34 |  #13

The manual / autofocus thing sounds like the gearbox system that allows for full time manual (FTM) focus and motor disengagement might not be moving according to specifications (ie a quarter turn of the ring should move the lens assembly XY mm in this direction). Maybe slippage of gears? If that entire assembly is one piece with the USM motor, I can see the line technician saying "gotta replace the entire thing" rather than "let me open up the assembly".

Obviously, you wouldn't ever know that the lens is supposed to move the focus elements a certain distance in a specified amount of turning. You just keep turning until the elements give you focus.


Canon 5D IV | Canon 5D II | XSI (Infrared modified) | SL1 | 16-35mm L f/4.0 IS | 24-70mm L f/2.8 II | 40mm f/2.8 | 85mm f/1.8 | 70-200mm L f/4.0 IS | Rokinon 14mm f/2.8 | C/Y 28mm f/2.8 | Tamron 35mm f/1.8 VC | C/Y 50mm f/1.7 | Zeiss 100mm MP
::SmugMug (external link)::

LOG IN TO REPLY
Tapeman
Sliced Bread
Tapeman's Avatar
3,694 posts
Joined Jan 2004
Twin Cities
Sep 08, 2017 21:59 |  #14

Tough choice. I had my 24-105 v1 repaired by Canon and been vey happy with it. Unfortunately this lens seems to have a wide copy to copy variation, I got lucky.


Canon G1X II, 1D MKIV, 5DSR, 5DIV, 5D MKII, 16-35/2.8L II, 24-70/2.8L II, 70-200/2.8L IS II, IS, 100-400/4.5-5.6 L IS II, 500/4 L IS II, 24-105/4 IS, 50/2.5 macro, 1.4x MKII, 1.4X MKIII, 2X MKIII,580EX II, 550EXs(2), ST-E2.
Gitzo 1228, 1275, 1558, Lensbaby 3G. Epson 3880, Bags that match my shoes.:)

LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as registered member)

2,172 views & 1 like for this thread
To repair or not...
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses


Not a member yet? Click here to register to the forums.
Registered members get all the features: search, following threads, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, settings, view hosted photos, own reviews and more...


AAA

Send feedback to staff    •   Jump to forum...    •   Rules    •   Index    •   New posts    •   RTAT    •   'Best of'    •   Gallery    •   Gear    •   Reviews    •   Polls

COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies. Privacy policy and cookie usage info.

POWERED BY AMASS 1.4version 1.4
made in Finland
by Pekka Saarinen
for photography-on-the.net
Spent 0.00087 for 4 database queries.
PAGE COMPLETED IN 0.03s
Latest registered member is rodney18
928 guests, 414 members online
Simultaneous users record so far is 6106, that happened on Jun 09, 2016