Things Probably Best Not Done – But….

The Sigma 50mm f1.4 Art lens has proved a bit of a star on a Canon 5d MK2 and a 60D. I use old Oly lenses on an EPL5 via a Micro Four Thirds to EF adaptor fronted by an EF to OM adaptor (you can see where this is going) which means it’s possible to mount the Siggy on the EPL5, so it had to be done, purely for experiment’s sake.

Olympus EPL5, Sigma 50mm f1.4 Art

Good start.

The first thing to realise is that there is only one aperture available – f1.4 – there is no electronic communication between lens and camera using this adaptor, and no external aperture ring. At f1.4 this lens is sharp, so maybe there’s some potential.

The second limitation is no autofocus, but the EPL5 has a VF4 viewfinder attached which is great for manual focus using ‘focus magnify’.

The third is that this combination is somewhat out of balance, the EPL5 looking like an end cap. Still I can carry the lens with the camera hitching a ride.

Olympus EPL5, Sigma 50mm f1.4 Art

One aperture, no AF and ridiculously unbalanced – it’s got to be done!

However it is a 100mm f1.4 equivalent and the EPL5 has ‘in camera’ image stabilisation so worth a try…

Olympus EPL5, Sigma 50mm f1.4 Art

A handsome model down at the allotments. Good isolation and bokeh – this could be useful.

‘Macro’ is around 40cm, but with a 100mm equivalent on the EPL5’s small sensor you can get in quite close :-

Olympus EPL5, Sigma 50mm f1.4 Art

Good colour using the ‘i-enhance’ colour profile. If you need greater depth of field – tough – there’ only f1.4

Using ‘focus magnify’ is interesting – it’s very precise but the magnified display in the VF4 jumps around when hand held making things tricky. Maybe a tripod is called for.

Olympus EPL5, Sigma 50mm f1.4 Art

This isn’t too bad at all – if you can nail the focus.

Good for closer stuff, but how are things at further focus distances? It’s the mill again…..

Olympus EPL5, Sigma 50mm f1.4 Art

The complete frame focussed using the VF4 as best I could. At this size it looks sharp enough.

Olympus EPL5, Sigma 50mm f1.4 Art

The centre of the image.

This is odd – there’s more chromatic aberration but that’s probably down to DXO Optics 9 not doing auto correction (these images are straight conversions). Parts look sharp but others don’t – strange! As this camera and lens combo wasn’t meant to be used together it’s not too surprising. The lens adaptor may also be partly to blame as it’s not a very good one…

Olympus EPL5, Sigma 50mm f1.4 Art

Couldn’t agree more!

Is this combo useful? I certainly wouldn’t suggest buying an expensive lens like this for use on an EPL5 with no aperture control or AF – a Zuiko 50mm 1.4 with external aperture control would be better and much cheaper even if the performance at f1.4 would be inferior to this lens. If you’ve already got one though it might be useful where you need a 100mm equivalent lens at f1.4 (portraits in low light, stage photography etc).

Thanks for looking – hope you find this useful – or at least some fun!


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