![Quote](images/misc/quote_icon.png)
Originally Posted by
neuroanatomist
I've thought about this method, but never tried it though it seems logical. One way you could test it, since the lens you tried seems to need nn adjustment, would be to apply increasing amounts of adjustment and see if/when you detect it as misadjusted. For reference, using the LensAlign I often find that 3-4 adjustment values look 'ok' (e.g. +1 to +3, so I just use the average); usually, a focal length/aperture combo with thinner DoF gives a tighter range. So, I'd think you'd want to see the effect by +3 or -3 for your lens (although more might not be bad as long as you can get a range and take the average - of course, you might get better accuracy with your method.