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Questions & Answers
Tamron 75-300mm lense quit focusing??
Check you have not switched camera t manual focus...if it's on auto then try changing various focal lengths to see if it kicks in....if it does intermittently you may have a cracked flex cable...this eventually happens with long throw lens because the cable gets weaken as it stretches and closes.It is also possible the ribbon became dislodged at the Circuit board just behind the mount.
How do you go from zoom to macro?
From my experience, many zoom lenses that have a macro feature simply kicks into macro mode when the lens is in fully zoomed position. Remember, macro is used to take pictures of something (usually like a flower, insect, etc.) and to magnify it several or many times larger than it really it is. And as a result the subject is huge and sharply focused with a very blurry background. Another thing to keep in mind is that there is usually a focusing limit for the lens in terms of how close one can focus a subject in MACRO zoom mode. In other words, you (the lens) may have to be at least a foot or more away from the subject in order to automatically focus sharply. On this note, if you have manual focusing capability, you should be able to take pictures in macro zoom mode from even shorter distance from the subject, resulting in more larger than life pictures!
I Can Fix it
Attaching it to a Canon EOS 400D REBEL XTI
Totally different lens mounts, you might be able to get an adapter ring, but it wont function amazingly. Honestly, you're better off just selling this lens and buying a Canon 70-300 instead.
I sent my canon 40D
This is a bit off the wall, I know, but have you contemplated taking the drastic step of getting the lens mended ?
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