My Canon 2.0x TC arrived few days ago...I did an in-depth test of the performance of the 600 f/4 with TCs at 840mm, 1200mm and 1680mm. 

The image quality is great both at 840mm and 1200mm, while at 1680mm the lens is close to its limits...you can see the full test in the Canon EF 600mm f/4 L IS USM Field Review.

I added new photos in the galleries: Callonetta leucophrys (Ringed Teal), Cygnus cygnus (Whooper Swan), Egretta alba (Great White Heron), Himantopus himantopus (Black-winged Stilt), Tadorna tadorna (Common Shelduck), Tringa glareola (Wood Sandpiper), Libellula depressa (Broad Bodied Chaser).

In these days I have been very busy with work, but I plan to post new photos and articles next days!

Today I have updated the Canon Lenses page with more details about the Canon 70-200 L IS USM and a new paragraph about the awesome Canon 300 f/2.8 L IS USM.

Other than that, Pentax has announced two new DSLRs, the Pentax K100D and the K110D. The K100D is the first image-stabilized SLR from Pentax.

One of the reasons for which I've chosen the Canon system is the wide range of lenses, and the advanced technologies employed in many of these lenses...I've updated the article about Canon Lenses, including some comments about the lenses that I have tried.

Other than that, I have added a page about My Equipment. 

The are hundred, or thousands, of accessories for digital photography. The majority of them are just colorful gimmicks; they looks cool, but they gives little or none practical advantage. The accessories that you really need are not many, but they have an essential importance: it is necessary to understand their features and advantages to choose and use them properly...

A new article is online: The Essential Accessories

I added some new photos in the galleries: Arda cinerea (Grey Heron), Ardeola ralloides (Squacco Heron), Nycticorax nycticorax (Night Heron).

All the images had been taken with the 600 f/4 and Canon 1.4x TC. My 2.0x TC should arrive next week, and I plan to add a paragraph about this TC in the 600 f/4 review as soon as possible :-)

I added some new photos in the galleries: Himantopus himantopus (Black-winged Stilt), Tringa glareola (Wood Sandpiper), Anser anser (Greylag Goose), Chrysanthemum leucanthemum (Oxeye Daisy), Italian Countryside.

The Canon 600mm f/4 L IS USM is an unique lens in many respects. It gives enough magnification to take frame-filling photos of distant subject like birds and wildlife, and it has a wide aperture that allows to get clean background and fast shutter speeds. Last bust not least, it employs the excellent Canon image stabilization, that reduces the effects of shake by the equivalent of 2-3 stops...the Canon EF 600mm f/4 L IS USM Field Review is online!

This in-depth review contains also many full size and RAW samples, taken both with the bare lens and with the lens + Canon 1.4x TC.