All Forum Comments
Comment by RyanK posted on Sticky aperture? at 24/10/2012 - 22:07
Comment by RyanK posted on FS: Sigma MKI APO EX 70-200mm f2.8 at 14/09/2012 - 08:11
Am thinking about replacing/upgrading my Pentax IstD* and I am looking at a near mint Samsung GX-20 with grip and kit lens (18-55mm).
What would a fair price be in your opinion?
Cheers
Ryan
Comment by RyanK posted on Samsung GX-20 at 03/09/2012 - 13:13
"installing" the eyepiece was super easy and it feels real solid.
Comment by RyanK posted on KPS Magnifying 1.35x Eyepiece or Plain Eyepiece - NEW at 30/08/2012 - 17:50
All my other manual focus lenses came with an expandable rubber lens hood, which I have been very pleased with so far.
I do however like the solid feel of metal hoods and have been looking at a Dorr 52 mm as this one:
http://www.amazon.co.uk/Dorr-52mm-Universal-Metal-Lens/dp/B002VK7O3S/ref=sr_1_12?ie=UTF8&qid=1346178739&sr=8-12
Will this be suitable for my 28 mm? Am I better off with a rubber thing? Or maybe something else?
Best regards
Ryan
Comment by RyanK posted on KPS Magnifying 1.35x Eyepiece or Plain Eyepiece - NEW at 24/08/2012 - 13:47
Comment by RyanK posted on If you could only take one lens.. at 18/08/2012 - 21:01
Comment by RyanK posted on FS: Pentax FAJ 28-80 and 75-300 at 05/08/2012 - 16:10
I will pick up the K 28 f3.5 in two days. Can't wait to see the pictures it produces.
Comment by RyanK posted on Scratches on front glass - an issue? at 04/08/2012 - 21:11


So, I just purchased a long wanted lens, the F 100 f2.8 macro. The price was good and the seller assured me it was ok.
But I suspect iit is not.
It seems to be shooting wide open only. When choosing a smaller aperture either manually on the aperture ring or in the AV mode it is not stopping down and the images are overexposed.
When I take it off the camera and look through the lens I can change the aperture until it reaches the f2.8 setting where it seems to get stuck. Stepping it down on the aperture ring doesn't make the aperture blades follow. Only When I activate the aperture lever it "snaps down" again.
I have tried moving the aperture lever some. It may seem a little tight but not too much. It is not bent and doesn't seem to be dislocated. The aperture blades seems clean.
Is this a sticky aperture problem or something else?
Is this fixable?
If it is serious I will send it back to the seller but I would love to keep it if possible.
Thoughts, advise, anything will be much appreciated. Thanks.