numloxx
Topic Author
Posts: 57
Joined: Sun Apr 25, 2004 8:17 pm

Canon 90-300 Lens Not Sharp Anymore

Sun Nov 19, 2006 7:35 pm

G'day all,

I've got a 90-300mm non USM lens which doesn't seem to want to take sharp photos anymore. I hardly get any more sharp photos out further than 150mm from it anymore. Is it me, or could this cheap lens be at the end of it's use by date?

Also when it's maybe 1/8th turn anti-clockwise from focusing on a distant object, it will focus clockwise full, then back anti-clockwise and finally focus.

Am hoping to get either a 80-400mm Sigma OS or a 100-400mm Canon IS next year anyway.

Any idea if the 90-300mm can be serviced and fixed?

Cheers

Carsten
Perth, Western Australia
 
numloxx
Topic Author
Posts: 57
Joined: Sun Apr 25, 2004 8:17 pm

RE: Canon 90-300 Lens Not Sharp Anymore

Sun Nov 19, 2006 9:06 pm

Here is an image I took a photo of using one of those sharpness test kits.
The pdf is printed in high quality on photo quality paper, camera is on a tripod and am using remote shutter, with mirror lock up to stabilise the camera before snapping the shutters.

http://img132.imageshack.us/img132/6519/sharpnesstest1df4.jpg
This one was taken at 7 or 8m.

http://img170.imageshack.us/img170/7981/sharpnesstest2eq3.jpg
This one was taken at about 3m.
Perth, Western Australia

Who is online

Users browsing this forum: No registered users and 1 guest

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos