All Forum Comments
Comment by alfpics posted on Photo published in the LA Times at 02/10/2012 - 13:32
This is a very nice shot
Andy
Comment by alfpics posted on Fungus Hunting at 01/10/2012 - 17:11
I didnt know John but it is so sad to lose another member - deepest sympathy to all of his family and friends.
Andy
Comment by alfpics posted on More sad news at 27/09/2012 - 07:44
Andy
Comment by alfpics posted on This fella is great at 24/09/2012 - 15:46
The problem is, once it's been used it will have photographed everything in the Universe, thereby making photography redundant.
Andy
Comment by alfpics posted on Double Lens Spherical Still Camera at 19/09/2012 - 16:16
Andy
Comment by alfpics posted on Spotted Richard Image of the Month at 17/09/2012 - 22:07
Andy
Comment by alfpics posted on Published in Climbing Magazine at 15/09/2012 - 09:07
Andy
Comment by alfpics posted on K10d Hair line on image at 11/09/2012 - 16:24
Unfortunately, those dark bands are a feature of this type of variable ND filter. The wider the angle lens, the worse the banding. It means that widening the lens angle means that the amount of 'stopping' you can do reduces.
I have a 67mm one from 7dayshop and nearly sent it back because of this, until I discovered this was a feature.
Below is a table I found somewhere showing the limitations;
12mm: ND4 to ND8 3 stop operating range
15mm: ND4 to ND16 4 stop operating range
18mm: ND4 to ND32 5 stop operating range
24mm: ND4 to ND64 6 stop operating range
35mm: ND4 to ND125 7 stop operating range
40mm: ND4 to ND175 7.5 stop operating range
50mm: ND4 to ND250 8 stop operating range
70mm: ND4 to ND350 8.5 stop operating range
100mm: ND4 to ND500 9 stop operating range
Hope that helps
Andy
Comment by alfpics posted on Variable ND Filters and Metering problems at 20/08/2012 - 18:39


Andy