All Forum Comments
Comment by Algernon posted on SMC A50mm f1.2 vs FA 43mm f1.9 limited at 29/05/2013 - 11:27
Frogherder wrote:
As he said - it's on the internet so it must be true.
This is my lamp :-
And after 5 days it hasn't made one iota of difference.
Doesn't glass impede UV (?Rhetorical) - so anything on the inside surface is protected by the glass.
regards
Bernard
No use according to this....... linkAs he said - it's on the internet so it must be true.
This is my lamp :-
And after 5 days it hasn't made one iota of difference.
Doesn't glass impede UV (?Rhetorical) - so anything on the inside surface is protected by the glass.
regards
Bernard
"1) UV bulbs (black lights) use woods glass, which is terrible for UVA/UVB transmission. It's a very inefficient design and hardly releases any actual UV."
If you do strip the lens down, be very careful not to lose the
aperture ring ball bearing, they fall out of Vivitars very
easily also take careful notes about what bits go where
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Comment by Algernon posted on Vivitar lens at 29/05/2013 - 11:17
I keep pork sauasages in old folding cameras. A 120/620
film spool is exacly the same length as a Porkinson Banger
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film spool is exacly the same length as a Porkinson Banger
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Comment by Algernon posted on Expired film at 28/05/2013 - 19:07
I'm not sure about fungi, but there's an Ikea lamp that
emits enough UV to kill off the yellowing in old lenses.
The lamp is also popular for lighting macros even though it
isn't a daylight LED.
http://www.youtube.com/watch?v=3CAaSgK6WsE
also see...
http://www.dpreview.com/forums/thread/3019506
'
emits enough UV to kill off the yellowing in old lenses.
The lamp is also popular for lighting macros even though it
isn't a daylight LED.
http://www.youtube.com/watch?v=3CAaSgK6WsE
also see...
http://www.dpreview.com/forums/thread/3019506
'
Comment by Algernon posted on Vivitar lens at 28/05/2013 - 18:58
The bokeh on the 2nd one shows why this lens is so popular.
Comment by Algernon posted on SMC A50mm f1.2 vs FA 43mm f1.9 limited at 28/05/2013 - 17:15
I can record programs that I don't like
while I'm watching something that I do and
the machine plays them back while I'm out!
while I'm watching something that I do and
the machine plays them back while I'm out!
Comment by Algernon posted on Another pointless thread at 28/05/2013 - 11:44
This threads quite old but it contains quite a few example
shots.....
Some pics taken with the Pentax-DA SMC 55-300mm f/4-5.8 ED
LINK
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shots.....
Some pics taken with the Pentax-DA SMC 55-300mm f/4-5.8 ED
LINK
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Comment by Algernon posted on 55-300 performance at 27/05/2013 - 15:16
Marselus wrote:
....Admittedly, postage will be extra...
If you buy it from them on ebay, postage is free
Postage is FREE to All PU members via their website, ....Admittedly, postage will be extra...
If you buy it from them on ebay, postage is free
just give SRS your details.
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Comment by Algernon posted on FS: Pentax DA 18-135 WR at 24/05/2013 - 20:42
"SAFOX X can work with luminous flux based on F2.8 levels in addition to that of F5.6. This increase the AF accuracy drastically when using with very fast lenses" LINK
All reviewers seem to overlook this
The Nickin seems to have a lot of f5.6 only points.
No f2.8's
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All reviewers seem to overlook this
The Nickin seems to have a lot of f5.6 only points.
No f2.8's
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Comment by Algernon posted on The K5 II vs N.... D7100 at 24/05/2013 - 19:31
are burnt out. The K50 shot is better and has captured the white
fur quite well.
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