![My nikon D90 says err. I still haven't insert any SD yet but this happens when entering live view or clicking the depth of field preview. : r/Nikon My nikon D90 says err. I still haven't insert any SD yet but this happens when entering live view or clicking the depth of field preview. : r/Nikon](https://external-preview.redd.it/HFrZHxrv25kZmEufWU3JZmAzt5IsK4D4u0DrCjG3vnA.png?width=640&crop=smart&format=pjpg&auto=webp&s=55f3c0f3256fe63c078700c678b9f0a6b3ef4afc)
My nikon D90 says err. I still haven't insert any SD yet but this happens when entering live view or clicking the depth of field preview. : r/Nikon
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![NIKON D90 TWO BUTTON RESET | RESET YOUR NIKON D90 - DSLRPro - Digital Photography for Regular People NIKON D90 TWO BUTTON RESET | RESET YOUR NIKON D90 - DSLRPro - Digital Photography for Regular People](https://dslrpro.net/wp-content/uploads/2011/03/Nikon_D90_Reset.jpg)