Out of focus images

Discussion forum for techniques and issues relating to the creation of panoramic and/or "mosaic" images

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charlestupman
Posts: 2
Joined: Thu Jul 05, 2012 11:50 am

Out of focus images

Post by charlestupman » Fri Jul 06, 2012 8:35 am

I am quite new to panoramic photography, I am using a Canon 60d with a sigma 8mm fisheye lens on a tripod with a pano head however, the images are full frame fisheye and I take four at 90 degrees then one up one down. I am finding that I have difficulty keeping the whole image in focus, something that outher photogrophers don't seem to have. Should I be taking more images to allow me to focus on more stuff or is it something to do with my equipment. You can see my tours at http://www.liontreevirtualtours.com.
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johnh
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Re: Out of focus images

Post by johnh » Sun Jul 08, 2012 6:59 am

You should set your lens to manual mode and focus on something 1 metre away using live view (ignore the focus scale markings on the lens). Put a short length of sticky tape on the lens barrel so that the focus ring cannot move. Shoot images at an aperture of f/8 or f/11. Use the same aperture and shutter speed for all the shots so that they blend together easily. Avoid auto white balance by selecting sunny/cloudy etc. Preferably shoot RAW imges and remove chromatic aberration in the conversion to tiff format. Level the panorama using vertical line control points on vertical features like sides of windows, doors etc. See http://www.johnhpanos.com/levtut.htm. Sharpen the final equirectangular image, which needs to be around 6000x3000 for panoramas displayed at fullscreen size.

John

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