The Green Button is great because it works the same as the Spotmatic
did with stop down metering. It's like having a digital Spotmatic
with KM mount lenses.

Later open aperture metering was always inaccurate and still is,
because of vignetting of the lens wide open and digital not
seeing beyond about f/1.8. Olympus had it right by metering
off the actual film.

I think it was Lowell Goudge from the thread you refer to who
posted graphs of exposure errors at various apertures.

You can see visually from the following grey card exposures
that f/5.6 is more reliable than f/2.8 (wide open in this case)
for taking exposures. f/22 becomes unreliable due to diffraction.
f/1.4 or f/1.7 even worse and some lenses vignette really bad
wide open.

I remember some lenses on a Z-1 being up to 2 stops out.




It's time Pentax users allowed Pentax to run their business
how they want and not how some people think they should
run it.... leave the management to the management

-

Superb pano... great lighting

VHS won because Sony wouldn't allow
porn to be shown on Betamax
Are you suggesting that porn movies on
Pentax cameras are the way to go!

-

NEW :: Pentax DA 55-300mm f4/f5.8 ED :: NEW :: £230 posted.

I bought this lens from Amazon last December to keep as a spare
in case I had any problems with my original copy, which I have
had for several years. I opened it for inspection on receipt
and everything was fine, so it has been stored ever since in a
spare bedroom (dry environment) with the original contents
which contained a silica gel bag.

It had never been used until today when I tested it against
my other lens and I am pleased to say that the performance
is identical for both lenses at 300mm f/5.8 and f/8... this
is around where the lens normally gets used and any problems
with being soft show up. Everything is in the box, paperwork
lens caps, case and hood. The box itself is in perfect new
unmarked condition.

Some sample shots taken with my original lens can be seen in
this thread.

Some pics taken with the Pentax-DA SMC 55-300mm f/4-5.8 ED

https://www.pentaxuser.com/forum/topic/some-pics-taken-with-the-pentax-da-smc-55...

Lens works well with TC's.

This lens is the superior metal mount version with the black canvas
bag/case and lens hood, plus caps. The Quickshift is really handy
to have on this lens.

I don't really need a spare copy of this lens... I think my
original will last for quite a few years yet so I'm offering
it for sale at £230 including RMSDND.

Payment by Paypal (buyer pays any fees) Bank Transfer or
Cash into any Barclays Bank.

The lens will be posted as soon as Payment is received.

There are a few very tiny/minute dust specs inside the lens which is
quite normal with most zooms due to the number of elements. It does
not effect the performance in anyway. My original actually has tiny
bubble in one of the lens elements.

You could even the point the top camera at
yourgoodself

Terrific set.... who needs sunny weather

You would have to get that shot right 1st time Don

That's really sad to hear.
My condolences and may he R.I.P.

Just get a chain, padlock and a leg iron!

Eye-Fi Cards already send photos over the net as soon as
you take them Nothing to do with the make of camera.