some-alpha-user-99
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I have A7II, some zooms and for low-light/thiner DoF Sony 35mm F1.8. I'll like to add some fast telelens to this set. Maybe something smaller and cheaper as it'd used occasionally for portraits, kids and probably kid's performances in the future. And here is my question - what would you suggest? Below are my ideas:
First choice was TTartisan 75mm F2.0 - cheapest option (around 240€), not best but decent for this price, quite small, I like bokeh. Or Samyang 75mm F1.8 (new 360€) almost the same performance.
But I realized then that 50mm on APS-C camera was the least used lens and for portraits I prefer longer focal lengths. But 105 or 135mm are heavier, bigger and more expensive. So as compromise 85-90mm would be sweet spot.
So I found that Sigma 90mm F2.8 (650€) is recommended in this forum more than Sony 85mm F1.8 (480€). Sony is sharp, weather sealed, best AF of all mentioned lenses, I like it's bokeh but aged. On the other hand I'm not big fan of Sigma's bokeh, but is smaller, sharp and there is something tempting in this lens. My concern is bigger DoF while wide open.
For "only head" portraits model is about 2,0m for 85mm (2,1m for 90mm to keep model-frame ratio) what gives 6cm DoF for Sony and 9cm for Sigma. "Whole body" photo means about 6 - 6,4m distance (Sony - Sigma), what gives 53cm DoF vs 81cm. Is this difference significant in real life or negligible.
But when we are talking about 90mm F2.8 - maybe consider some macro lens and have dual use lens. Sony 90mm F2.8 (1070€) is not so fast when scoring AF, but Tamron 90mm F2.8 (640€) is quite fast. Both gives decent photos. But those lenses are big and heavy. And in terms of size could compete with Tamron 70-180 F2.8 (1070€ G1, 1150€ G2)(which is not macro lens but provides 2,6x zoom and could replace other telelens simplifying my set).
Currently my first choice is Sigma 90mm, second is Tamron 90mm Macro and safe backup option is Sony 85mm.
Will be I safisfied with portraits taken with those lenses? In low-light situation I'm aware higher ISO to compensate lack of photons. But life is full of compromises.
First choice was TTartisan 75mm F2.0 - cheapest option (around 240€), not best but decent for this price, quite small, I like bokeh. Or Samyang 75mm F1.8 (new 360€) almost the same performance.
But I realized then that 50mm on APS-C camera was the least used lens and for portraits I prefer longer focal lengths. But 105 or 135mm are heavier, bigger and more expensive. So as compromise 85-90mm would be sweet spot.
So I found that Sigma 90mm F2.8 (650€) is recommended in this forum more than Sony 85mm F1.8 (480€). Sony is sharp, weather sealed, best AF of all mentioned lenses, I like it's bokeh but aged. On the other hand I'm not big fan of Sigma's bokeh, but is smaller, sharp and there is something tempting in this lens. My concern is bigger DoF while wide open.
For "only head" portraits model is about 2,0m for 85mm (2,1m for 90mm to keep model-frame ratio) what gives 6cm DoF for Sony and 9cm for Sigma. "Whole body" photo means about 6 - 6,4m distance (Sony - Sigma), what gives 53cm DoF vs 81cm. Is this difference significant in real life or negligible.
But when we are talking about 90mm F2.8 - maybe consider some macro lens and have dual use lens. Sony 90mm F2.8 (1070€) is not so fast when scoring AF, but Tamron 90mm F2.8 (640€) is quite fast. Both gives decent photos. But those lenses are big and heavy. And in terms of size could compete with Tamron 70-180 F2.8 (1070€ G1, 1150€ G2)(which is not macro lens but provides 2,6x zoom and could replace other telelens simplifying my set).
Currently my first choice is Sigma 90mm, second is Tamron 90mm Macro and safe backup option is Sony 85mm.
Will be I safisfied with portraits taken with those lenses? In low-light situation I'm aware higher ISO to compensate lack of photons. But life is full of compromises.
