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More
flare
problems in the Kiev60
After developing the flocking kit for the Kiev 60 I
still have noticed some instances of flare with the standard 80mm lense.
I always use lense hoods wherever possible the stop
sunlight from falling on the front glass.
This is not a Kiev only rule , it applies equally to
all cameras and lenses and is good advice to follow.
When you get most Kiev camera kits with the 80mm lense
it often is supplied with a special collapsible lense hood made for
that lense.
The hood is great , almost unbreakable and can fold
down flat when not in use , so it doesn't take much storage space in
your kit.
What I assumed though was that this hood was umm , good
!
Good at doing its job , which is of course primarily
that of preventing flare.
But even in my fully flocked Kiev I was still getting
the occasional washed out image from flare.
After a couple of days thinking I decided that I should
test this hood and lense combination as I could not work out where my
random flare problems was coming from.
So this is what I did ............
I laid my camera , actually a spare non-flocked 60 , out on the ground
and got a tape measure , pencil and a light source.
From a distance of 60 centimetres away from the camera I worked out
what the field of view of the standard 80mm (Arsat) lens was.
Of course light sources of any kind are welcome within this range as
this is what our image is made up of.
I then placed extra light sources further and further away from this
field of view area and noted the results.
As the lense is round I only had to check in one direction , but the
result is the same whether your off axis light source is from above ,
below or from the right or left.
So everything BEYOND this field of view is an unwelcome light source.
Theoretically we should not ever have to be too concerned about this
off axis light , and a simple hood should give extra peace of mind from
stray light sources.
But what I found was staggering.!!! ......
next page in this flare test article
