JohnX

Joined: 9th February 2009

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JohnX
fritzthedog wrote:
Other than bulk reduction - is there any real advantage of a 10 stop ND Vs stacking multiple NDs?
Less degradation of the image AND colour cast.

Comment by JohnX posted on Advice for buying a 10 stop ND/110 filter at 15/11/2011 - 08:48

JohnX
PM sent re remote

Comment by JohnX posted on K5/DA* 16-50/DA* 50-135/DA* 55/FA 50 1.4 at 08/11/2011 - 11:58

JohnX
Retailer!

Comment by JohnX posted on Chipped lens element at 07/11/2011 - 23:06

JohnX
I don't have the 35mm macro, so can't speak first hand about it, but did go through a similar exercise to you, resulting in the purchase of the 100mm macro.

My requirements were different, however, which led to the choice of focal length; I wanted a reasonable working distance between the lens and subjects - bugs, flowers, etc. Had I been looking for something to use with inanimate objects I may well have gone with the 35 or 50.

As to dual use, it was pointed out to me that macro lenses are designed for the purpose, and their use for general photography is a compromise.

Can't say I've really noticed any issues with my 100mm however, other than the focus throw is very long and therefore AF is slow compared to other non-macro lenses. I use it almost exclusively in manual mode.

Comment by JohnX posted on advice please on 35mm and/or macro lenses at 06/11/2011 - 13:21

JohnX
It's to connect one end of the (optional) carrying strap to.

Comment by JohnX posted on Help: Manfrotto 190CXPro4 at 02/11/2011 - 12:46

JohnX
Dangermouse wrote:

I have seen a guide to DIY repairs of SDM lenses which I would probably try first if mine failed out of warranty. It basically involved unscrewing the lens mount and wiggling the SDM motor with a screwdriver to un-stick it. Given I've had A-series and AF lenses apart before now (and reassembled them in full working order) I doubt it would be that much harder, and if it didn't work I'd just reassemble and send it for a professional fix.
And here's the link> http://bangmedia.no/pentax/sdmfix/

Comment by JohnX posted on 16-50 DA finally dead at 27/10/2011 - 19:53

JohnX
kiwao wrote:
Transit wrote:
I thought the adjust all and adjust each wasn't cumulative ?
Pete
You are correct it isn't. I do not know how they will adjust it. I thought that if I was having to dial in so much adjustment that there may be a fault in the lens but they assured me that it can't be as it is an autofocus fault.

One question. Do you have any trouble with focus in indoor lighting?
Poor AF indoors was an issue, corrected wholly or partially in a recent firmware upgrade.

As to AF adjustment, there's a mechanical adjustment available to Pentax technicians. Be aware though, that if you send the camera and lens to them, and they adjust for your 77 (camera and lens could be at opposite ends of the tolerance range), then other lenses may be adversely affected, ie you won't be able to adjust them!

Comment by JohnX posted on k5 af adjustment at 25/10/2011 - 12:33

JohnX
From Yves Bourque's site;

"This may be a good year for Pentax. Stranger things have happened before. Read the facts.
Email: [email protected]

Hi Pentaxian friends.

This may be a good year for Pentax. All over the internet, there are talks about the production problems of the major camera players. With the flood in Thailand, Canon, Nikon and Sony have been forced to cease operations and a good majotity of their cameras are not currently being manufactured. It is unfortunate, but buyers may have to pospone their purchases or look for another brand, while this shortage continues.

FACTS:
Nikon cameras affected are: D3100, D5100, D7000, and D300s. Apparently 90% of Nikon's DSLR production is from Thailand.

Sony says it is postponing production of its new A77, A65, and NEX-7 cameras due to supply and production interruptions in Thailand, a result of the extensive flooding there.

Canon makes printers in Thailand and some of their DSLRs, although I'm not certain which they are.

Western Digital Hard Drive production facility was badly damaged and there are talks that Hard Drive prices and availability worldwide will be greatly affected.

Olympus also has some problems. The ousted CEO of Olympus says he was fired for raising questions about more than 675 million in alleged improper payments made during acquisitions by the company between 2006 and 2008. Olympus shares plunged by one-quarter on Monday following an 18 percent fall. I'm not sure what impact this will have on camera production, but it will one way or the other.

Pentax, on the other hand, has no factory affecting production of it's DSLRs and lenses. They are lucky. With the acquisition by Ricoh, and the unavailability of some of the major cameras and lenses at this time, Pentax may inherit some sales by default. Stranger things have happened before."

Comment by JohnX posted on Found this...thought of us! at 24/10/2011 - 16:48

JohnX
Eagle12 wrote:
I've just realized how old this post is.
Easily done

Comment by JohnX posted on This is my Gear Of Pentax SFX at 19/10/2011 - 18:20

JohnX
PM sent

Comment by JohnX posted on WTB Pentax K100D or similar at 17/10/2011 - 22:18

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