I was engaged in a do or die game of junior scrabble with my daughter when I decided to test out my two main portrait lenses. I’ve recently gotten hold of a Sigma 105 2.8 macro lens for my Nikon D750, mostly for macro work but its a very good portrait lens as well. It’s also pretty cheap for such a high quality lens and very, very sharp. I wanted to see how it fared against my current favourite portrait lens, the Fuji 56mm 1.2, in quite low light. So while playing scrabble I took a few shots with each and here are the results. Other than the default sharpening that happens when you convert a raw file to jpeg I’ve not sharpened these images at all.
Fuji 56 1.2, 1/125, ISO 1250
Next..another shot from the Fuji, but at a slightly lower ISO ( the light kept changing, as it does ). I processed this in lightroom to add the Classic Chrome filter which I really like..ISO was 1000 this time but all other settings stayed the same.
Now for a couple with the Sigma 105…
This was shot at f3.2, ISO 10000(!!!), 1/200. This being a macro lens, the aperture changes as you get closer to the subject, which is why I couldn’t shoot at 2.8. The quality of the image given the ISO is staggering I think.
And here is one at a much lower ISO (f4.0, ISO 3200, 1/100).
So what have I learnt from this exercise..
1.My daughter kicks my ass at Junior Scrabble.
2.Both these lens produce lovely portraits
3.The bokeh on the 56mm can be a little distracting ( see to the right on the second image ), although its still very good. On the Sigma the bokeh is very smooth.
4.The 56mm obviously lets in more light, as it’s a 1.2 lens, but the ISO capabilities of the D750 make up for this.
5.Both lens are super sharp.
That’s as much pixel peeping as I want to do for now. I’m very impressed with the Sigma and wouldn’t hesitate to use it for portraits. My go to lens will still be the 56mm 1.2 though ( which is considerably more expensive than the Sigma ).