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johnriley

Joined: 19th March 2002

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johnriley
The 12-24mm focuses down to 0.98 feet, or 0.3m and I'm a bit surprised that it isn't close enough!

Comment by johnriley posted on Returning to the world of Wide Angle at 27/05/2010 - 23:24

johnriley
People often talk of putting "bums on seats" at a venue, or there is the Americanisation such as "Bowry Bum" so I don't think the word is bannable.

Otherwise, you might have had to moderate your own post away, and how embarassing would that be?

Comment by johnriley posted on Bum at 27/05/2010 - 16:01

johnriley
Quote:
I have the Takumar Bayonet 28mm f2.8 (mechanically and optically identical to the later M 28mm f2.8 but minus SMC)
Sorry to keep disagreeing, but the two lenses are not the same, nor is the the SMC-M lens later!

The SMC-P M lens is a 7 element design for the ME and MX type cameras, the Takumar-A lens is a more plastic design from the A series era, with 5 elements, a budget lens that is nonetheless not at all bad.

Comment by johnriley posted on LBA confessions at 27/05/2010 - 15:57

johnriley
It's not a macro lens. The two lenses have identical specifications and AFAIK the Pentax named one is just a later renaming.

Comment by johnriley posted on LBA confessions at 27/05/2010 - 15:11

johnriley
As Mannesty's and thoughton's lenses are in fact the same, as we can see it depends on the sample we get and how much it's been abused by previous owners.

Comment by johnriley posted on LBA confessions at 27/05/2010 - 14:50

johnriley
It was just an example of the sort of effect that can't be replicated by post production, but whether or not it's applicable to your situation I don't know.

Comment by johnriley posted on Filter for underwater photography - worth it or not? at 27/05/2010 - 14:48

johnriley
Quote:
generally if they left the SMC off on a K mount lens then it's a cheap and rather nasty piece of glassware
Very far from the truth IMHO. There are some very good Pentax lenses with conventional coatings, I was pleasantly surprised, and they only really fall down on the issue of flare against the light.

Comment by johnriley posted on LBA confessions at 27/05/2010 - 14:31

johnriley
You will get the same tonal effects in post production, but not the same effects where you are enabling youself to see past haze, or polarise the light, or indeed punch through the murkiness of water.

So there are still some circumstances where a filter is helpful, and you may well have found one here.

Comment by johnriley posted on Filter for underwater photography - worth it or not? at 27/05/2010 - 14:28

johnriley
Sorted.

Comment by johnriley posted on Spam on my portfolio page at 27/05/2010 - 13:52

johnriley
Well Stefan, it's what the camera manufacturers recommend.

Having said that I've seen people doing all sorts of things that could cause problems, such as removing cards without switching off the camera, and they have got away with it.

It's not a good principle though, and it would be foolish if the images on the card were for a professional job. "I thought it would be OK," is not a viable excuse for not coming up with the goods.

People do have problems with corrupted cards and it makes one wonder why - could it be sometimes due to poor housekeeping?

Comment by johnriley posted on Pentax Optio S50 at 26/05/2010 - 18:25

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