gardenersassistant
Well-Known Member
I captured these a couple of days ago on my first successful session at the church grounds opposite our house since the end of last year. I have been over there several times since then but found nothing to photograph.
These were captured using a Laowa 100mm 2X macro lens with two Kenko 2X teleconverters on a Sony A7ii, with a Venus Optics KX800 twin flash.
As part of my ongoing tests of very small apertures I used f/45 throughout the session at magnifications of around 1:1 to 8:1. According to the usual formula this means I was using effective apertures between around f/90 at 1:1 and f/400 at 8:1.
There is an ongoing discussion here in the Photographic Science and Technology forum at dpreview.com as to whether that is the correct formula to use. An alternative formula which seems to me to fit better with various tests I have done suggests that the effective apertures I used for the session would have been around f/56 to f/135.
f/90 to f/400 as per the usual formula would give around twice to eight times the depth of field that I previously got using f/45 full frame equivalent with close-up lenses. With the scaled down numbers from the alternative formula the increase in depth of field would range from not much more at 1;1 to around three times more at 8:1. Of course, whatever the increase in depth of field is, it is accompanied by a corresponding increase in loss of fine detail from diffraction softening.
These were captured as raw using single shots (i.e. no stacking) and processed in DXO PhotoLab then Lightroom then twice in Topaz DeNoise AI using two different methods.
#1
1884 05 2021_05_02 DSC00805_PLab4 LR 1300h DNAI DNAIc by gardenersassistant, on Flickr
#2
1884 09 2021_05_02 DSC00879_PLab4 LR 1300h DNAIc DNAI DNAIc by gardenersassistant, on Flickr
#3
1884 17 2021_05_02 DSC00931_PLab4 LR 1300h DNAI DNAIc by gardenersassistant, on Flickr
#4
1884 87 2021_05_02 DSC01200_PLab4 LR 1300h DNAI DNAIc by gardenersassistant, on Flickr
#5
1884 92 2021_05_02 DSC01272_PLab4 LR 1300h DNAI DNAIc by gardenersassistant, on Flickr
These were captured using a Laowa 100mm 2X macro lens with two Kenko 2X teleconverters on a Sony A7ii, with a Venus Optics KX800 twin flash.
As part of my ongoing tests of very small apertures I used f/45 throughout the session at magnifications of around 1:1 to 8:1. According to the usual formula this means I was using effective apertures between around f/90 at 1:1 and f/400 at 8:1.
There is an ongoing discussion here in the Photographic Science and Technology forum at dpreview.com as to whether that is the correct formula to use. An alternative formula which seems to me to fit better with various tests I have done suggests that the effective apertures I used for the session would have been around f/56 to f/135.
f/90 to f/400 as per the usual formula would give around twice to eight times the depth of field that I previously got using f/45 full frame equivalent with close-up lenses. With the scaled down numbers from the alternative formula the increase in depth of field would range from not much more at 1;1 to around three times more at 8:1. Of course, whatever the increase in depth of field is, it is accompanied by a corresponding increase in loss of fine detail from diffraction softening.
These were captured as raw using single shots (i.e. no stacking) and processed in DXO PhotoLab then Lightroom then twice in Topaz DeNoise AI using two different methods.
#1
1884 05 2021_05_02 DSC00805_PLab4 LR 1300h DNAI DNAIc by gardenersassistant, on Flickr
#2
1884 09 2021_05_02 DSC00879_PLab4 LR 1300h DNAIc DNAI DNAIc by gardenersassistant, on Flickr
#3
1884 17 2021_05_02 DSC00931_PLab4 LR 1300h DNAI DNAIc by gardenersassistant, on Flickr
#4
1884 87 2021_05_02 DSC01200_PLab4 LR 1300h DNAI DNAIc by gardenersassistant, on Flickr
#5
1884 92 2021_05_02 DSC01272_PLab4 LR 1300h DNAI DNAIc by gardenersassistant, on Flickr
