What do all those letters mean?

It is windy, raining and just plain horrible outside right now, and that wouldn’t normally be so bad except right now, I am in a campervan in Mount Field National Park in Tasmania. Having not a lot to do I was sitting here looking as some of my shots from this trip and the Sigma Macro lens is amazing. The detail I can capture with this lens is awesome. So I decided to take a closer look at why this lens is so special, starting with understanding what all the letters mean! 105mm F2.8 EX DG OS HSM Macro Lens… lets look at what it all means.

EX – Basically to say it is Excellent…

DG – Optimal on full frame digital camera like my D800 (Will work well with 35mm film and crop sensors too)

OS – This function utilizes a built-in mechanism that compensates for camera shake. Sigma says it dramatically expands photographic possibilities by alleviating camera movement when shooting by hand held camera.. I had it switched off as I used a tripod.

HSM – Quiet and Fast Autofocus… okay I have to admit I used Manual Focus… so yeah, it was quiet!

To top it off, it is a SLD Lens…. (Special Low Dispersion) – With all these letters and stuff it is kind of confusing, what I can say is it is no surprise that this lens has come out on top in every review I could find.

Today’s iCandy – Blue Wonder

Here is my favourite image to date taken with this Sigma Lens. The detail is amazing and I find it really easy to use the manual focus to get it tack sharp. There isn’t a lot of Fungi around due to the lack of rain previous to my visit (looks like that will change soon). Most of the Fungi I spotted was you’re average brown or white stuff, so It was cool to be able to capture a Blue fungi.

Mycena interrupta Fungi

The Technical Mumbo Jumbo

[tabbed tabs=”Camera|Mode|ISO|Aperture|Shutter|Lens|Filter|Other info”] [tab] I used my trusty D800 for this one [/tab] [tab] I used Aperture Priority (aka AV) [/tab] [tab] ISO100 – I always shoot as low as I can go [/tab] [tab] f32 – When you get close with a macro lens you need an high f number to make sure you have enough depth of field [/tab] [tab] 6 seconds [/tab] [tab] Sigma 105mm MACRO lens [/tab] [tab] No filter used [/tab] [tab] I used a reflector to balance out the light, this was then processed in Lightroom to add contrast, clarity and vibrance, and after cooking it in the lightroom oven, I moved it over to the CS6 Photoshop oven for a little dust bunny removal [/tab] [/tabbed]



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