If you have to replace the lens, Lea you do know about KEH.com don't you? You can often get quality lenses that are used and save a great deal if expense is an issue. Now its a personal choice whether a used Canon or a new Tamron or a used Tamron. I never had a problem with their ratings. In fact most of the equipment I have bought from them I would have rated better than they did. Not connected other than a satisfied customer. --- On Thu, 1/29/09, Lea Murphy <lea@xxxxxxxxxxxxxxxxx> wrote: > From: Lea Murphy <lea@xxxxxxxxxxxxxxxxx> > Subject: Re: good lens gone bad? > To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxx> > Date: Thursday, January 29, 2009, 10:27 AM > Les, > > Thank you for your input on this. I appreciate it. > > I have a couple of non-Canon lenses. This Tamron is one I > love so much that I bought two of them because I like having > an f/2.8 through the zoom. It's light and small and I > love that. Plus it's a good lens. > > I will definitely look at the Canons you noted if I have to > replace this lens. > > Again, thank you. > > Lea > > On Jan 29, 2009, at 2:45 AM, fotofx@xxxxxxxxxxxxx wrote: > > > Hi Lea, > > > > You probably just wore it out, it does happen. The > Tamrons are built much better than the Sigmas, but try and > find a Canon 24-70 2.8L or the 24-105 f4L, both are > mainstays in my kit and the 24/105 is great for portraits. > If you want a fixed FL the 85mm 1.4 cannot be beat. The > images quality and bokah are the very best that Canon has to > offer and will blow away anything else you have put in front > of your camera. I suggest renting from my friends at > borrowlenses.com prior to your purchase. > > > > Yes the Canon lenses are more expensive than > aftermarket glass. but I have NEVER had one fail on a shoot. > My 70-200 2.8 used to be a rental prior to my owning it, it > has been in 5g dives, vibrated against all manner of > machines and hit by an overthrown baseball at a Giants game, > still keeps on ticking. > > > > Lots of folks may chime in about this or that Sigma or > Tamron. I would think that many doe not have cameras and w/ > lenses that are over 250,000 frame shot under harsh > conditions. Canon L series lenses are just that much better. > I sold Canon and the other stuff too. But the real > difference is the build quality and the images it helps you > to create. There is a real reason the aftermarket stuff is > cheaper. > > > > Cheers, > > > > Les > > > > -----Original Message----- > >> From: Lea Murphy <lea@xxxxxxxxxxxxxxxxx> > >> Sent: Jan 28, 2009 3:11 PM > >> To: List for Photo/Imaging Educators - > Professionals - Students > <photoforum@xxxxxxxxxxxxxxxxxx> > >> Subject: Re: good lens gone bad? > >> > >> Wow. Very helpful information. > >> > >> Thank you so much. > >> > >> Lea > >> On Jan 28, 2009, at 2:08 PM, Mark Blackwell wrote: > >> > >>> Ok Lea You have definitely identified the > source of the problem. > >>> If the lens won't work on another body and > another lens will work on > >>> the body that had the problem, its definitely > the lens. But there > >>> are a couple of things to check. > >>> > >>> First look real close at all the contacts and > re clean them if > >>> possible. Years ago I had one go funky and I > cleaned the contacts > >>> on the body, but not the lens. The gunk was > on the lens contacts. > >>> Check for damage to pins, but you likely have > already done both. > >>> > >>> Before I sent it back to the factory, Id check > around for a local > >>> repair man/person to take a look at it. IF > there is anything that > >>> they can do with it, its likely going to save > you some down time. > >>> Yes contacts could go bad. The grinding > though to me sounds like it > >>> might be something internal that has gone bad > that is demanding more > >>> voltage than the body expects. The camera > sensing the need for > >>> excess voltage suspects that something is in > the way of the current > >>> causing the clean contacts message. I > don't know how easy it would > >>> be to get to replace a motor or gears and > hopefully it isn't that. > >>> Yet the good local guy could likely tell you > with just a listen, if > >>> there is one near you and give you good sound > advise on how to > >>> proceed. > >>> > >>> > >>> --- On Wed, 1/28/09, Lea Murphy > <lea@xxxxxxxxxxxxxxxxx> wrote: > >>> > >>>> From: Lea Murphy > <lea@xxxxxxxxxxxxxxxxx> > >>>> Subject: Re: good lens gone bad? > >>>> To: "List for Photo/Imaging Educators > - Professionals - Students" > <photoforum@xxxxxxxxxxxxxxxxxx > >>>>> > >>>> Date: Wednesday, January 28, 2009, 11:53 > AM > >>>> It's a Tamron. > >>>> > >>>> I have two of the exact same > lens...it's a 28-70mm > >>>> f/2.8. > >>>> > >>>> I put the second one on and all is well. > >>>> > >>>> The first one still won't work. > >>>> > >>>> Lea > >>>> > >>>> On Jan 28, 2009, at 11:46 AM, rebphoto > wrote: > >>>> > >>>>> What brand of lens? > >>>>> > >>>>> I had a Sigma lens that worked fine > >>>>> for over a year with my 10d and > >>>>> then decided not to talk with the > camera > >>>>> anymore. Kept giving the error 99. > >>>>> > >>>>> I gave it to a friend. > >>>>> > >>>>> He sent it to Sigma and for about > $10.00 > >>>>> they did something so it would talk to > his > >>>>> Canon Rebel. > >>>>> > >>>>> Russ > >>>>> R.E. Baker > >>>>> Photography > >>>>> rebphoto@xxxxxxxxxxx > >>>>> www.rebphoto.smugmug.com > >>>>> Feed a Cat... > >>>>> Starve a Fever........ > >>>>> > >>>>> > >>>>> > >>>>> ----- Original Message ----- > >>>>> From: Lea Murphy > >>>>> To: List for Photo/Imaging Educators - > Professionals - > >>>> Students > >>>>> Sent: Wednesday, January 28, 2009 > 12:38 PM > >>>>> Subject: good lens gone bad? > >>>>> > >>>>> I have a dedicated 5D and lens in my > studio. It never > >>>> leaves there and isn't used by anyone > else. > >>>>> Today when I used the camera for a > session it was > >>>> acting all funky, had a heck of a time > making focus and was > >>>> kind of grinding around as if I were > manually focusing with > >>>> the lens set in autofocus mode. I removed > the lens, put it > >>>> on my 5DM2, it behaved the same way and > the camera gave me > >>>> an error saying the contacts needed > cleaning. I cleaned them > >>>> but the problem persists. Can a lens or > lens contacts go > >>>> bad? It hasn't been dropped or used > outside the studio > >>>> ever. Actually, it's never off the > studio body. Any > >>>> ideas what in the world is going on here? > Lea > >>>>> > >>>>> babies. they're what i do. > >>>>> www.leamurphy.com > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>> > >>>> > >>>> babies. they're what i do. > >>>> www.leamurphy.com > >>> > >>> > >>> > >>> > >> > >> > >> babies. they're what i do. > >> www.leamurphy.com > >> > >> > >> > >> > >> > >> > >> > > > > > > Foto/SFX, San Jose, CA 408-835-1184 > > http://www.aviationphotographers.org/, > http://www.fencecheck.com > > http://www.myspace.com/fotosfx, > > http://www.portfolios.com/profile.ht...=14627.baldwin > > > > > babies. they're what i do. > www.leamurphy.com
