Blurry Pictures when using Tamron 18-270mm VC and SB-900 Flash

madeira83

Senior Member
Hi, I just got my hands on an SB-900 Speedlight and i'm using it with my Nikon D3100 and Tamron 18-270 lens. If i takee a photo with it betweeen 18-50mm then the picture becomes blurry, even when i have it on a stand. Its like when the SB-900 is mounted it doesnt focus correctly. If i zoom in further than 50mm then the pictures are clear. SB-900 is set to auto to start as well as the D3100. I have an aftermarket flash that was given to me as a gift and when i use it on the D3100 with the same setup the pictures are not blurry as well as the built in flash on the D3100. Is there something i'm missing here? Thanks in advanced.
 
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