Dave Peters

It's not a regular bolt-on convertor so I don't think those assumptions are valid. It is being inserted between sets of elements and not at the rear. Effectively you have a completely different...

I ordered as soon as it was announced since I had been waiting since the development announcement 2 years earlier. I had already handled a prototype although not been able to take pictures with...

I pre-ordered from B&H in New York.

I just received my new 200-400 f4 with built in 1.4x No real photos until tomorrow but a few first impressions: It feels lighter and more manageable than the 800 - probably even more than it should...

Lens coatings are pretty tough. Slimline to prevent vignetting caused by the mount when used with wide angle lenses. Coatings like nano to resist dirt. Most of the UV/Haze/IR are not necessary as...

Hoya Pro 1 or B+W slim MRC if you really want to use a filter. You could also look at a photographic insurance policy to cover you against accidental damage and theft which will not impact the...

The 1Ds MkIII does have general f8 at center point already so there must be something strange about the way this lens reports to the camera if it needs a firmware mod.

I think thats f4 plus in-built extender taking it to f5.6 plus external 1.4x taking it to f8.

Most likely the Euro price is excluding tax as the rate will vary depending on country and the UK price includes 20% VAT which is fixed. This makes it about the same price. However its still loads...

If you bump around an IS lens with the IS activated then its easy to destroy it. They are very vulnerable once the IS is unlocked. Since the IS shuts off after a couple of seconds and locks, thats...

There was an interesting note on the previous periods results: "Newly introduced IS zoom lenses would seem to a repair just waiting to happen" What I do find alarming is the cost of repairs for...

There is no Canon software for Linux but he is using GPhoto which is a hack of the USB protocol. The advantage of using Linux is that you have low cost and lower power. The disadvantage is that you...

I dont know a lot about the Nikon system but with the Canon, there is a focus speed penalty with the converters. The other thing is that once you get above 1.4x the image penalty is great (with 2x...

Well its a bit later than the Canon but at least Nikon have current f8 focus bodies whilst Canon have abandoned them. If you can't AF at f8 then you may as well have a 600 f4 and 1.4x and gain...

They are vegetarian !