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johnriley

Joined: 19th March 2002

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johnriley
Clearly an emotive subject, and an important one, perhaps better discussed in the other thread so it's all in one place.

Here we should really be discussing the competition, the pictures so far really being pretty harmless, which is what we might expect.

However, all are entitled to an opinion.

Comment by johnriley posted on Discussion weekly comp #185 Children at Work or Play. at 24/01/2011 - 15:45

johnriley
Yes, you are indeed allowed an opinion. If you said no when you were the adult in charge, then the answer is no.

Comment by johnriley posted on Discussion weekly comp #185 Children at Work or Play. at 24/01/2011 - 15:32

johnriley
Polarisers will work in any light, provided it actually is polarised....this is not always the case.

Comment by johnriley posted on Polarising filters at night? at 24/01/2011 - 15:29

johnriley
Nothing muysterious and not a new Pentax camera so don't get over excited! But certainly reviews are on the way of things that will interest Robbie and are relevant to this discussion.

Comment by johnriley posted on 4/3 (four thirds) systems- why? at 24/01/2011 - 15:28

johnriley
The DA Limited lenses are not Tessar lenses. Tessar lenses are four element designs that build upon the Triotar (three element) design with a cemented doublet as the rear group.

Planar lenses are older still and are five or six element designs with wider apertures than the Tessar.

Sonnar lenses are telephoto designs, probably five elements.

Then we have the wide angle Biogons, Distagons, etc.

Many lens designs may well start off with the basic concept of one of these designs, particularly symmetrical designs, but computer design and new glasses have moved things along very considerably.

Comment by johnriley posted on FA 35/2: Planar? Tessar? at 24/01/2011 - 15:26

johnriley
Keep an eye on the newest reviews over at EPZ.

Comment by johnriley posted on 4/3 (four thirds) systems- why? at 24/01/2011 - 14:33

johnriley
I've started off the competition with my entry, so time to put our thinking caps on and find something good that fits the brief!

Comment by johnriley posted on Discussion weekly comp #185 Children at Work or Play. at 24/01/2011 - 12:18

johnriley
If you frequest EPZ you will have seen there are currently speed issues as a server upgrade goes on. It may have affected us here as well, although not as badly as over there.

It does seem to be better this evening.

Comment by johnriley posted on Is this forum struggling again (speed wise) at 23/01/2011 - 20:24

johnriley
Hyperfocal distance can be used very effectively with this rule of thumb:

Set a small aperture and focus on a point one third of the way into the scene. This will maximise DOF.

Comment by johnriley posted on Help: how to get the best out of Sigma 10-20 4.6 at 23/01/2011 - 14:33

johnriley
The fickle Miss Julian has left the room.

Comment by johnriley posted on Quote window on my comments panel at 23/01/2011 - 13:35

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