Hi, Charles,

First of all, I don't know flashes at all, so I can't help you out with model
numbers and that sort of thing.

But, I can try to answer your question about a flash "covering a 28mm lens".

Now, you've got an SLR.  It's got a lens on it.  I'm not sure what you mean by
"55-58 mm lens" - that's a new one on me.  I'll assume that it's a 55mm lens,
which is a "standard" lens.  Now, the smaller the number used to describe the
lens, the "wider" the lens is.  So, a 28mm lens has a wider field of view than a
55mm lens.  That's why we call a 28mm lens a "wide angle lens".

An example to illustrate what a wide angle lens does:  So, if you're standing in
front of a large building, and you can't fit the whole building into your
viewfinder, you've got two choices.  You can move away from the building until
it fits into the viewfinder.  But, sometimes there isn't room to do that.  So
your other choice is to put a wide angle lens on your camera, and if it's wide
enough, you can fit the building into the photograph you want to take.  Am I
making sense?

At the other end of the scale is a "telephoto lens".  That's like putting a
telescope on your camera.  Stuff far away looks closer.  So, a 200mm lens would
be a telephoto lens.  Got it?

So, you've got a flash on a camera.  If you've got a wide angle lens on it, the
light from the flash has to cover the area that the lens "sees", otherwise, your
photograph will be dark at the edges.  So, by saying that a flash has coverage
for a 28mm lens, means that you can use a 28mm lens with that flash, and the
flash will have wide enough coverage to make certain that everything in the
photograph is bright.

Does that make sense?

regards,
frank

Charlton Vaughan wrote:

> Hi group,
>
> Since I'm a (what I consider) a novice at photography, I don't do this
> professionally, I really am not knowledgeable about terms, etc.,
>
> My camera is an SLR, or what I've always thought of as a 35mm camera, one of
> the lens that act as a regular lens with limited macro says it's a 58mm
> lens, another (Takumar) says it's a 55-58mm lens.  I was looking at the
> Pentax Flash AF360FGZ listed on the Pentax website that someone referred me
> to.  The flash is listed as "covering" a 28mm.  What does it mean to "cover"
> a 28mm lens?  Does this mean that my 58mm 0r 55-58mm lens is incompatible
> with the flash?  Does this also mean that it will not fit a 35mm camera...as
> you can see...I'm soooo confused.
>
> Charlton
>
> If I had wanted to put up with "high maintenance" I would have married a
> primadonna with a Harley.
>
> www.geocities.com/siarlbychan
>
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--
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