new motherboards and fast DDR3 RAM is optimised for processing large files, so is the way to go. Also a new motherboard will give you SATA III (SSDs fly on SATA III!). Also, Windows 8 allows for software RAID (make several smaller hard disks look like 1 larger disk). Two hard disks RAIDed will perform slightly faster than 1 Harddisk of the same size.

I would also always recomend 64bit OS. It is worth noting that more than 4 oores on a CPU is not really worth it (though the OS will use them, most software will run on only one CPU and at most, for high end gaming, will use 3). AMD is good Value. Also I belive that Photoshop can make use of the processing power (GPU) on some graphics cards.

I may give it a try, apparently it is due to a plastic pin that deteriorates over time. The pin can be replaced, however one post else where recommend an allowance of two hours for the repair and to be prepared for frustration and eye strain! So I would first need to obtain a new pin! Suggestions of a non working ebay purchase is a sound idea. If I do give it a go, I will document the steps!

Thank you for the suggestions, I will take a look at the Haig mount and may be give that a go. How accurate is its tracking? I would be looking at exposures of 30 mins or more.

I think you have a great flash there and a wise decission on keeping it.

I once made a spring for my K10 grip after taking it appart to fix a stuck pin and watching one of the springs 'bounce' off the work surface ! It was quite a successfull repair!

I am interested as I have been thinking about a 3rd unit for remote flash. Can I ask if it is too basic for your level and interest or too much?

I had this same issue on this lens, worked fine with screw-drive (tested on MZ5n), cost £120 for repare at Johnsons - works a treat now - better than before!

I am looking for a motorised Equitorial Mount with Pole Star alignment scope. I do not need any form of go-to function, just something to keep up with the earth's rotation and allow for long exposures.

Does anyone have an suggestions for a reasonably priced make/model?

I have a problem with my MZ5n where the flash does not pop up - it is like a spring in the mechanisum has broken, there is no functional issue with the flash. This is the second time I have had this failure, the first time, some 15 years ago I think, I had the camera repaired via the shop I purchased it from.

My question is, is this now a Harrow Technical repare job or is it somethign that I can fix myself by taking the flash housing appart and re-assembling? I have the tools, but wondered if anyone else had experianced this type of failure and has any advice on attempting a self repair.

[quote:3496ace15f="davem"]Did you know that this will also work on the Pentax with an adapter available via eBay.

One lens that can be used on two systems that is good value[/quote

Do you mean Pentax Q?