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Lack of sharpness at f1.8 on Canon 50mm STM

Started 4 months ago | Discussions thread
norman shearer Senior Member • Posts: 1,418
Re: Lack of sharpness at f1.8 on Canon 50mm STM

photo_ion wrote:

50 STM is sharp in the center, for sure there is improvement stopping down, never hesitated using it at 1.8, stopping down only to get proper depth of field, sharpness is overrated (if focus is correct and composition interesting)

Sigma 18-35 is maybe slightly better at 1.8, Sigma 40mm 1.4 should be the king but size / price is an issue...

Great samples. I do recall reviews that said the STM had slightly improved sharpness and contrast in centre but corners need around F2.8 or slower to catch up. Out of focus transition looks nice and smooth and bokeh is much nicer than the old nifty 50's. I think the bokeh improvement alone makes the STM a worthy successor.

On a side note. I have an Olympus 45/1.8 on way for my GX9 and I'll be curious to find out which lens looks the better for portraiture. I opted for the Olympus over a slightly sharper Panasonic lens purely because the Olympus bokeh was smoother and less distracting.

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