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Forums > Back > next PZ lens test report: Sony FE 100mm f/2.8 STF GM OSS
Klaus
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#1
08-21-2017, 09:59 AM
So with the usual delay ... finally our review of the bokeh monster ...

 

http://www.opticallimits.com/sonyalphaff...y100f28stf

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stoppingdown
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#2
08-21-2017, 10:39 AM
Quote:I'd rather state that the lens is aligned to still life and nature photography where you are often facing very busy and contrasty fore- and backgrounds and this STF lens can kill hard edges like no other.
 

I can't comment about wedding, as I never do that kind of photography, but I do agree that the lens would be excellent for still life and nature.

 

Quote:I'd even state that it can substitute a macro lens down to a magnification of 1:4 although that may not be sufficient for critters at least.
 

It would be interesting to see whether somebody tests it with a close-up lens or an extension tube.

 

Quote:Interestingly Sony implemented a dedicated aperture ring. Some users may still prefer this but it feels a little bit like a gimmick these days.
 
 

I'm one of those users who'd appreciate that...

 

Quote:The camera will always display the T-value which feels a little unfortunate because such a lens is primarily about the depth-of-field rather than the effective speed so it's a little difficult to estimate the effect on the depth-of-field when stopping down.
 
 

Shouldn't be really hard for Sony to publish a firmware update, at least for the most recent A7*, and offer an option to switch between f/stop and T-value in the EVF - or even show both.
stoppingdown.net

 

Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2 
Plus some legacy Nikkor lenses.
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Brightcolours
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#3
08-21-2017, 10:49 AM
It would have been nice if the lens could focus a bit closer (to 1:3 or even 1:2), but it is a very nice lens, for a steep price.

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Guest
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#4
08-21-2017, 03:18 PM
Does the T stop impact diffraction or does diffraction set in based off of the f stop ?

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Also pity the lens isn't APO; the bokeh is creamy but with lots of green borders.

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Rover
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#5
08-21-2017, 07:14 PM
A cool lens if very specialized. Not the one I'd probably want to get, but fun to read the review nevertheless.  Wink

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Klaus
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#6
08-21-2017, 09:17 PM
Quote:Does the T stop impact diffraction or does diffraction set in based off of the f stop ?

-

Also pity the lens isn't APO; the bokeh is creamy but with lots of green borders.
 

Diffraction is related to the f-stops. T-stops are about the transmission only.
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davidmanze
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#7
08-22-2017, 11:57 AM
         Smooth as the proverbial baby's botty!

 

  I would like to see the lens formula (elements in cutaway with diaphragm)!
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Brightcolours
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#8
08-22-2017, 12:32 PM
Quote:         Smooth as the proverbial baby's botty!

 

  I would like to see the lens formula (elements in cutaway with diaphragm)!
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