Comments made by johnriley - Page 1604

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This is always a difficulty, not only with cameras. The expertise is there somewhere, but actually getting to the right person is something else.

I would suggest phoning the new repair house, or Harrow Technical, and getting to talk to the technician who knows what you mean. Then you could send your camera marked for his or her attention. Until you get this contact, don't send anything.

Comment by johnriley posted on Lens focussing issues and SRS Microsystems are great at 29/10/2009 - 13:20

I will have another look and I did mean the interface between lens and camera body - when these rip apart it's not a pretty sight.

Having said that, it's not a pretty sight when a tripod bush gives way either!

I wonder if anyone has ever mounted a camera body on a tripod and then tried to put a 1000mm lens(or similar)on it. Some assistant somewhere will have I'm sure. Anyone have anything like that to confess?

Comment by johnriley posted on Lens sharpness. at 29/10/2009 - 12:53

If this amount of messing is required, then I would suggest returning the camera for checking it out. The engineer's parts of the menus are intended for those with the correct tools and inside knowledge....

Comment by johnriley posted on Lens focussing issues and SRS Microsystems are great at 29/10/2009 - 12:05

When I used film cameras I used the f4 version a lot - it's very versatile and has continuous focusing down to a magnification of around 1:4 which is not at all bad for almost macro shots of flowers, etc.

If you get a good one it will serve very well, but watch out for worn examples with really slack focusing.

Comment by johnriley posted on Which 35-70mm zoom? at 29/10/2009 - 11:16

Not a photographic issue here, but the answer is clear. Don't take the kids there.

Comment by johnriley posted on So are you allowed to photograph your kids through the fence? at 29/10/2009 - 09:15

Oggy, I wonder at the widsom of putting that amount of force on the lens mount....it's usual to weigh down the tripod, not the lens.

Comment by johnriley posted on Lens sharpness. at 28/10/2009 - 23:46

Actually as the shutter uses current to keep open, there is a limit to the B setting - the amount of battery charge that is possible and how long that will sustain an exposure for.

For film cameras using Lithium batteries this is probably 10 hours or so, but I've never seen a figure for DSLRs. I would imagine after a few hours the sensor would get quite hot and noisy.

Comment by johnriley posted on K10 exposure query at 28/10/2009 - 23:43

It's a very compact and very good lens.

Comment by johnriley posted on Pentax 50-200mm DA ED f4-5.6 Lens at 28/10/2009 - 22:35

I seem to recall that Sony was making a loss?

Comment by johnriley posted on FF Pentax anyone? at 28/10/2009 - 21:37

In theory you could still use Asahiflex lenses, if you could find the Asahiflex to M42 adapter and then used it with the Pentax Adapter K. That would take you back to lenses made around 1955 or so. Long enough ago for almost anyone I would have thought!

Comment by johnriley posted on Hoya CEO: "We will not shut down this business.” at 28/10/2009 - 16:11

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