Whisperjet From Germany, joined Nov 2007, 571 posts, RR: 8 Posted (5 years 5 days 6 hours ago) and read 5469 times:
AIRLINERS.NET CREW PHOTO SCREENER
my EF 100-400 wil turn 3 years in a few days and I was wondering whether it's just me or if it is really showing sings of its age. I have the feeling that my recent shots are not that sharp anymore like they used to be when the lens was new. Many pictures appear to be slightly out of focus and also look rather flat.
Fly-K From Germany, joined May 2000, 3162 posts, RR: 51
Reply 1, posted (5 years 5 days 5 hours ago) and read 5459 times:
I've had mine recalibrated to my new camera but to be honest, I don't see much of a difference. However the lens is 7 years old and a bit worn.
I think we're just getting more used to high quality images so we tend to believe that our equipment is not on top of things anymore.
Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been...
JakTrax From United Kingdom, joined Jun 2005, 4936 posts, RR: 7
Reply 2, posted (5 years 5 days 5 hours ago) and read 5449 times:
I think the same on occasion with my 70-200 F4 L but a recent batch of shots taken a few days ago has changed my mind completely. I get these 'phases of thought' a few times a year and every time the lens just seems to sense it and periodically blows me away! Definitely nothing wrong. Funnily enough I always warm to the idea that my lens performs as it did when I bought it in winter - I first had it winter '06 and the light at that time of year just seems to deliver far more crisp and punchy images.
Samuel32 From Switzerland, joined Jun 2005, 141 posts, RR: 0
Reply 3, posted (5 years 5 days 5 hours ago) and read 5435 times:
I've had mine 3.5 years now and I sent mine to calibration. The shots are sharper now BUT Canon Switzerland made it back focus and can't correct it anymore. I think lens elements shift around after a few years of extensive use.
Gabik001 From Poland, joined Jun 2005, 216 posts, RR: 1
Reply 4, posted (5 years 2 days 1 hour ago) and read 5247 times:
I got mine about 3 years and I can't see any differences between shots taken today and 2-3 y. ago. I cleaned lens inside twice and works perfect. Infact i got pretty used body (350D with 50k shots) so I think that is a problem. Anybody elso who used my lens said it works perfect so I think it is time to get new body (40 or 50D i think).
EMA747 From United Kingdom, joined Jun 2006, 1171 posts, RR: 1
Reply 6, posted (5 years 1 day 19 hours ago) and read 5200 times:
Quoting Whisperjet (Reply 5):
Gabriel, did you clean the lens yourself? Would be interesting to know since mine has some dirt behind the first lens.
Please, please do NOT open the lens to clean it yourself. If you want it cleaned send it to a professional service, preferably one recommended by Canon.
If it's just a speck of dusk there really isn't any need for a clean.
Failing doesn’t make you a failure. Giving up and refusing to try again does!
Yeah , I did it by myself. I got a precision electronic and mechanic skills (i'm electronician specialized in HF transceivers) so it was not a problem. Infact , nobody should clean it except authorized service , but cost of couple hundreds of $ makes me to find a way to clean it. BTW dust is not visible on the shots like the dust on sensor , but I felt non comfortable when was looking every day on the lens. Cleaning is easy , but everybody should remember how to put back all pieces together (12 screws , 3 rings and one lens) and not to loose sharpness of the lens. I also cleaned up my other lens , 17-85 IS USM but that was a piece of cake.
Regards , Gabriel
Mfz From Germany, joined Aug 2004, 259 posts, RR: 2
Reply 8, posted (4 years 12 months 4 days 5 hours ago) and read 5040 times:
I got my 100-400L over 5 years ago, and I can honestly not say that I would notice any difference imagequalitywise. Sure it look somewhat worn on the outside, but this is fair enough after 5 years of extensive use and a lot of traveling, but the only point I observe is that since maybe 6 months the zoomlock-ring tends to become loose by itself and lenscreep increases. But with twisting it firmly this issue (still?) can be resolved quite easily.
Cheers from MUC,
[Edited 2009-12-29 06:18:45 by mfz]
[Edited 2009-12-29 06:19:12 by mfz]
Extra Bavariam non est vita et si est non est ita! --- My flights: http://my.flightmemory.com/mfz
Dehowie From Australia, joined Feb 2004, 1071 posts, RR: 33
Reply 9, posted (4 years 12 months 3 days 13 hours ago) and read 4970 times:
Got my 100-400 in Dec 03...
Was always happy with it but decided a service was due after a pretty hard 6 years of photography.
Came back sharper than ever so more thann happy with a now 6 year old lens.