Tests with a Lightroom HDR style effect

Am still messing around with a HDR style effect in Lightroom after following a tutorial on the Lightroom killer tips site. Quite an interesting style – I like the scratchy, grainy high contrast effect it makes.

Sigma 10-20mm wide angle tests at ISO 1600 – and willing Dalmatians

Dog - Sigma 10-20 test shots

Just messing around with the Sigma 10-20mm… and lightroom….just for fun, can’t be serious all the time now can I! Am loving the way the checkered tiles work behind the Dalmatian.
Taken at something like ISO 1600 at 10mm, F4

What is sRaw? Canon 40D sRaw files, what are sRaw files used for?

What is sRaw?
After searching the net to find out what the differences between standard RAW and sRAW – I thought I would post it here incase other people end up searching for it too.
sRaw is quite simply is a small version of a standard RAW file, roughly 1/4 the size. This sRaw file format is [...]

The Saatchi Gallery requests a portfolio selection!

Got home today to find an email from the Saatchi online gallery in London, from Anita Sahni. I initially guessed this was just spam, so carefuly checked it out and had a browse around their site. I had not realised what a huge site it was, listing many artists and photographers from around the world, [...]

What is your depth of field (DOF) preview button for? Answered here!

I have had this question asked to me many times and it has been on my list of things to talk about for quite some time. There are a great deal of Digital SLR (DSLR) photographers out there who have probably never used it, or even havn’t even noticed it!
Basically, the depth of field (DOF) [...]

What is camera ISO? Help with digital ISO with this simple guide – Digital and film ISO explained

ISO is fundamentally the sensitivity at which your cameras sensor reacts to the light when you open the shutter.
ISO is measured in a scale (On standard digital cameras) called ISO. ISO is the number indicating a digital camera sensors sensitivity to light, the higher the sensitivity, the less light is needed to make an exposure.
Exposure [...]