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70-300mm lense not focussing
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Hi everyone, I am not the most expert photographer but recently bought a new 70-300mm macro sigma lens to go on my nikon d40. I bought this to do some close up photography. I have not been able to focus the camera and haven’t been able to take anything but blurry images. I have tried everything I can think of and looking around on the internet for a solution has been very frustrating because I can’t find anything that is written in layman terms that I might have a hope of understanding. If anyone has any advice (in laymans terms) I’d really appreciate it.
hi i hope this will work for you i have had the same problem with my camera i found this a while ago and it sorted it out
“Work in a clean environment.
Your Sigma lens may need the contacts cleaned with a lintless cloth barely soaked with alcohol.. Do the same with the contacts on the front of the D40″.Thanks for the reply naja,
I gave it a go and it didn’t make a difference. The images I’m getting are really blurred so I think it is a problem with the settings I have the camera on. I can only get clear images of things that are very far away and when I try something close, which is what I want to use the camera for, I get nothing that I can use.
Thanks again naja.when you say very far away are you talking about on macro mode or the lens its self
I have an Sigma Lens ( a 17-35mm) with same problem ie it just wont focus.
I haven’t done anything with it yet as I have a Canon 17-40.Check this thread from a week or so back. It gives some leads on where you can go to get it repaired.
sigma-lens-repair-best-route-t49631.html
Are you trying to get it to focus closer than it’s minimum focusing distance? If it’s not a dedicated macro lens, you won’t be able to get “very close” to your subject even if you have the lens set to macro mode. Also if you are using auto focus & there is not much contrast in your subject, the lens may have problems “locking on” to the subject & will keep searching.
Hi you have nikon d40 with has not internal focus system like d90 d300 , so you need to buy lenses with build in motor for focusing on cameras like yours , each brand have diferent name for this motor nikon : SWM Siletn Wave Motor , Sigma HSM Hyper Sonic Motor , Tamron USD Ultrasonic Silent Drive , As you have sigma lens make sure yours has HSM , because there is few versions of this lens and some are without HSM
No build in motor in lens no auto focus on Nikon d40
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