I measure CA as part of the EPZ lens reviews, and most lenses are very well corrected these days. Sometimes CA approaches zero at the centre.

CA is not a major problem as any residual fringing can be removed by the camera or by software, so I really wouldn't worry about it.

The way forward is to just go through the payment process when you are prompted to become a Plus member.

If there's a problem, make a report via the option at the bottom of every PU page and admin will sort it out for you.

Hope that helps!

This isn't something new and has always plagued SLR designs. Normally the biggest problem is "mirror slap" which causes much more vibration than shutters ever will. Depending on the design, around 1/125s is the most suspect area. This is worse with larger mirrors of course, so will need more attention on medium format SLRs.

Despite all this woe, we still seem to be able to take sharp pictures.

When it comes down to it, all marques have their strengths and their foibles.

The K-1 is a lovely all round camera for photographers. Obviously all cameras are for photographers, but what I mean is that it gives an experience that encourages good photography, it handles so beautifully and intuitively. Non-photographers who use iPhones or compact cameras to record their lives may find it too big, heavy and complicated.

I would suggest handling one if you are in doubt, but if you are already a Pentax User then you know what to expect, just a little larger and definitely a bit faster all round.

The red flash does not indicate correct focus, just the point being focused on. The green hexagon at the bottom of the frame should be steady, not flashing, which indicates focus has been achieved.

Indeed so, happy New Year!

The point is that set to sequential numbering the camera continues to count even when a new card is put in. It's not a great idea to just have one huge folder that's never sorted, it's obviously too many images.

So, I would download the images from every day to a numbered and named folder on the PC and then use a fresh card for the next day. It's only the numbering that continues.

So day 1 folder might be "St Mawes 16 05 2015" and contain images 1676-1786

Day 2 might be labelled "St David's 17 05 2015" and contain images 1787-2003

And so on. Initially this will be in the folder on the camera marked 100, regardless of which card is put in. When 9999 is reached then the camera folder becomes 101. In due course after we reach 9999 again, the folder becomes 102. This is nothing to do with whatever folder structure we use for our computers.

My answer assumed sequential numbering rather than a new folder for each day, which I surmised was what the OP was asking about.

But the important thing is that nothing will ever be overwritten regardless of the file structure chosen.

Nothing will be overwritten. Currently you may be using folder 100. When you exceed 100-9999 the camera will create a new folder 101 and start counting again with 101-0001.

Given that the bird is moving quickly and a high shutter speed is needed, I turn off the SR system thus avoiding the slight delay waiting for it to stabilise.