The Vivitar 55mm f2.8 Macro has a formidable reputation.

Yes indeed, for specific requirements there will be specific needs. My usual use also falls into the category of using small apertures for DOF, so an f4 lens is fine underthose circumstances.

This is why advice that's good for me might not be good for you and vice-versa.

It's easy to criticise, but I do have some sympathy for an organisation that has its prices capped, has to deliver for the same price to every remote spot in the UK and has competition that is allowed to undercut and cherry-pick which bits are competed for.

My local Post Office is wonderful and the girls there are very helpful and efficient. I have no doubt they get the flak for the failings of the rest of the organisation.

I also have a friend who works in the complaints department of a bank and she regularly gets the most disgraceful phone calls to deal with. I think sometimes the angry complainants forget they are dealing with people doing their job, just like we all try to do.

Title corrected.

Can we have lens dicussions in the lens section please - it's becoming cluttered here and the OP is trying to sell his 8-16mm lens.

I remember Whirlybirds. Helicopter adventure in black and white.

Liked it but preferred Pathfinder In Space, Pathfinders to Mars and Pathfinders to Venus, so I was a natural for Doctor Who a year or so later.

Were you set on self timer? That turns off SR.

You can put your own photos on here. Anything you don't have copyright to, a link only please.

The 120mm f2.8 is a portrait lens and is designed with residual aberrations at full aperture. This should give nice portrait effects. It's as sharp as the other two when stopped down.

It could well be that the colour of the light affects focus accuracy as different wavelengths may focus at different point in the AF system. CA in the AF path I presume.

In daylight there doesn't seem to be any problem, so we are talking about situations under tungsten light at low levels. Or are we discussing under the newer eco bulbs, which are fluorescent? Or I suppose we could be talking about halogen bulbs.

Is there a pattern with these different light sources?