Macro lens choice
Macro lenses come in a variety of different focal lengths but how do you choose the best focal length for...
X-Archive
Zoom lenses and composition
The arrival of zoom lenses changed the way photographers approached their subjects. In the days of primes you had to...
Compact System Cameras
Compact System Cameras are, in many ways, the best of both worlds; they and small and yet also very versatile....
Measuring lens resolution
Lens resolution figures have long been stated in line-pairs per millimetre but in the digital arena it is common to...
Picture lines and image detail
Having looked at resolution figures quoted in line-pairs-per-millimetre and in cycles-per-pixel attention now turns to lines-per-picture, which is a measure...
Pro-spec and consumer lenses
Having set the scene with various technical definitions and explanations we are now ready to consider how best to compare...
Chromatic aberration
Nothing ruins a good picture quite like chromatic aberration, which reveals itself as colour fringes. Let’s see what chromatic aberration...
Pentax Lenses
Pentax has been the name on some outstanding photographic products over the years and now the company has unveiled its...
Macro Sharpness
Trying to evaluate the sharpness of macro lenses at macro reproduction ratios is tricky. Here is a quick look at...