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  Previous versions of Lance B's message #15035856 « Nikon 85mm f1.8S Image & Resource Thread - 85 1.8 Z 1.8Z 1.8S glass lens images picture »

  

Lance B
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Re: Nikon 85mm f1.8S Image & Resource Thread ...


Just a bit of fun because I was bored.

Tigger gets his portrait done.

This is in no way meant to be a test or a proper comparison, just a couple of photos comparing the 85 f1.8S @ f2.5 to the 105 f1.4E @ f3.2, adjusting the apertures to give similar DOF for each. Both shot in my computer room with afternoon light in through the window to the right. I tried to keep Tigger the same size in each photo and I did remarkably well considering I did these handheld. The WB for both seemed to change on the EVF even when I was taking them, you could see the difference with the lens change. The 85 f1.8S ended up with a much bluer WB than the 105. After I adjusted the WB of them both in Capture One Pro, the histograms were very similar and differences may be attributed to the fact that the different perspective of 85 to 105 meant that there was slightly more background in the 85 shot. I altered exposure, WB, saturation and levels applying the same to one as the other. In other words, WB from the camera was different for each lens, but I set the same WB is post process the same for both and the histograms ended up almost identical albeit for the slight difference in the amount of background and thus the very slight difference in each color channel in the histogram.

These are near the minimum focus distance, about 1.4mts for the 105 and about 1.1mts for the 85. At this distance they are very similar, not seeing a clear advantage of one over the other as far as sharpness of bokeh or CA, but then CA is automatically corrected via Capture One and the Nikon lens correction algorithms that they use.

The wall behind Tigger is only about 200mm (8-9") behind him so, this will have a bearing on how the bokeh will look. I do believe that Nikon would design each lens to have optimal bokeh (within the limits of lens design) to be best at certain camera to subject distances depending on the focal length and the aperture. My belief is, lets say, you are using the 105 at f1.4 and the best camera to subject distance for reasonable DOF for that aperture may be say 8mts, at f2 it may be say 6mts and at f2.8 it may be 4 mts and so on. Bokeh at all distances will be good, but optimal at the best camera to subject distances for a given aperture. I do have some portrait photos of my grandson with the 105 shot at f2 and f2.8 where the backgrounds were about a metre or more away and the bokeh is stunning, as good as any bokeh I've seen from any lens that purports to be a bokeh lens. I ca't show them here as I do not have release permission from his mother, my daughter.

I focused on the same spot, the closest eye and thus the DOF etc should be almost identical.

Anyway, all a bit of fun.

Z7 + 85 f1.8S, 1/50s f/2.5 at 85.0mm iso64



Z7 + 105 f1.4E, 1/30s f/3.2 at 105.0mm iso64






Nov 05, 2019 at 04:44 PM
Lance B
Offline
Upload & Sell: On
Re: Nikon 85mm f1.8S Image & Resource Thread ...


Just a bit of fun because I was bored.

Tigger gets his portrait done.

This is in no way meant to be a test or a proper comparison, just a couple of photos comparing the 85 f1.8S @ f2.5 to the 105 f1.4E @ f3.2, adjusting the apertures to give similar DOF for each. Both shot in my computer room with afternoon light in through the window to the right. I tried to keep Tigger the same size in each photo and I did remarkably well considering I did these handheld. The WB for both seemed to change on the EVF even when I was taking them, you could see the difference with the lens change. The 85 f1.8S ended up with a much bluer WB than the 105. After I adjusted the WB of them both in Capture One Pro, the histograms were very similar and differences may be attributed to the fact that the different perspective of 85 to 105 meant that there was slightly more background in the 85 shot. I altered exposure, WB, saturation and levels applying the same to one as the other. In other words, WB from the camera was different for each lens, but I set the same WB is post process the same for both and the histograms ended up almost identical albeit for the slight difference in the amount of background and thus the very slight difference in each color channel in the histogram.

These are near the minimum focus distance, about 1.4mts for the 105 and about 1.1mts for the 85. At this distance they are very similar, not seeing a clear advantage of one over the other as far as sharpness of bokeh or CA, but then CA is automatically corrected via Capture One and the Nikon lens correction algorithms that they use.

The wall behind Tigger is only about 200mm (8-9") behind him so, this will have a bearing on how the bokeh will look. I do believe that Nikon would design each lens to have optimal bokeh (within the limits of lens design) to be best at certain camera to subject distances depending on the focal length and the aperture. My belief is, lets say, you are using the 105 at f1.4 and the best camera to subject distance for reasonable DOF for that aperture may be say 8mts, at f2 it may be say 6mts and at f2.8 it may be 4 mts and so on. Bokeh at all distances will be good, but optimal at the best camera to subject distances for a given aperture. I do have some portrait photos of my grandson with the 105 shot at f2 and f2.8 where the backgrounds were about a metre or more away and the bokeh is stunning, as good as any bokeh I've seen from any lens that purports to be a bokeh lens. I ca't show them here as I do not have release permission from his mother, my daughter.

I focused on the same spot, the closest eye and thus the DOF etc should be almost identical.

Anyway, all a bit of fun.

Z7 + 85 f1.8S, 1/50s f/2.5 at 85.0mm iso64



Z7 + 105 f1.4E, 1/30s f/3.2 at 105.0mm iso64




Nov 05, 2019 at 02:28 AM





  Previous versions of Lance B's message #15035856 « Nikon 85mm f1.8S Image & Resource Thread - 85 1.8 Z 1.8Z 1.8S glass lens images picture »