Advantages: Image quality. Consistent aperture. Internal zoom/focusing. Build. Great with converter. Disadvantages: Needs a large (tall?) outfit bag. Quite heavy. Quite large.
.6 and EXCELLENT by the time you stop down to f/8. It stays this way until diffraction sets in (to be expected) at the two smallest apertures. This is perfectly normal however and the lens delivers quite amazing performance at this or indeed, any price level.
I have used (and tested) this lens with my SIGMA EX APO 1.4x converter and can vouch for the performance being virtually just as good with only the two smallest apertures being POOR. The rest of the range is great and is particularly so when used on APS-C sized sensor cameras where only the central 'sweet spot' of the image circle is utilised.
A truly great lens.
David Chamberlain ...
Advantages: Superb graphics, great sound/voice overs, interesting missions, and very complex Disadvantages: Needs a lot of patience, difficult AI, slow movement of graphics, and no multiplayer
The first submarine simulation game I played when I was a kid and despite its retro status, I still find myself playing it once in a while. Even though I mainly played the Amiga version when I was a kid, the Mega Drive version is literally the same and I'm currently trying it out again years later through an emulator.
Plotline
Taking place during the Cold War between the USA and the Soviet Union. 688 Attack Sub uses the what if scenarios and shows the worst what could have happened all those years ago. Starting from minor threats between the two countries and eventually turning into a world war.
Gameplay
The entire interface gives you that instant feeling that you're inside a submarine and in total command. As you can see from one of my pictures, there are several stations that need to be commanded and waiting for orders ...
Advantages: Hugely versatile. Compact. Light. Inexpensive. High quality. Disadvantages: None!
Converters often get bad press. Perhaps they deserved it about 20 years ago but modern ones are really much better than those early models.
The Sigma EX 1.4x APO Converter is an excellent and extremely versatile little accessory capable of extending the range and usefulness of many lenses and in my opinion, a valuable and essential addition to the kit bag.
It is of EX designation which in Sigma terminology means 'Excellence' and indicates that it is considered to be within the top quality professional range of Sigma lens products. It has the familiar smooth black 'crinkle' finished associated with the EX range and both looks and feels very good quality. It is extremely compact and will take up very little room in the outfit bag. It would be churlish to leave it at home! I purchased my example over a year ago and it is now ...
