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11-17-2022, 03:11 PM   #616
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QuoteOriginally posted by Thagomizer Quote
Yes, that's the case. It does eat up a bit of working distance, but it's an easier solution than jamming something against the lens's aperture control tab. An adapter with aperture control for mirrorless is going to use up more working distance, so going for an adapter intended for DSLR is going to be more convenient.
Wondering if the PK to Q adapter would also do the job... hummmm

01-22-2023, 10:30 PM - 4 Likes   #617
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These images were recorded at nearly twice life size (2:1) and further cropped.
K-70 with D FA 100/2.8 WR Macro and a variable extension tube, FULLY automatic, made from a Vivitar Macro Focusing Teleconverter with its optics removed. My Vivitar converter had the "A" contacts which allow full, accurate aperture control via the camera. The Vivitar Macro Focusing Teleconverter is fairly uncommon in KA mount, and is just so-so as a teleconverter, but it works great as an extension tube!
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01-25-2023, 09:49 PM - 4 Likes   #618
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Just found this club

Here I used a 70-200 F4 along with a 1.4 converter and a M 50mm .14 reverse mount on the end.
I mainly use this setup for photographing image sensors and snowflakes.
The sugar grain photographed above was for testing
02-06-2023, 07:59 PM - 8 Likes   #620
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Here I used a 70-200 F4 along with a 1.4 converter and a 50 1.8 G reverse mount on the end





02-06-2023, 11:00 PM   #621
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QuoteOriginally posted by Ian Stuart Forsyth Quote
Here I used a 70-200 F4 along with a 1.4 converter and a 50 1.8 G reverse mount on the end




Wow ! just wow !
02-07-2023, 12:03 AM   #622
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QuoteOriginally posted by Weevil Quote
Wow ! just wow !
Thank you

02-07-2023, 11:55 AM   #623
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QuoteOriginally posted by Ian Stuart Forsyth Quote
Here I used a 70-200 F4 along with a 1.4 converter and a 50 1.8 G reverse mount on the end




Incredible. Is there a reason for the "g" I assume nikkor for this? Any particular advantage or just a good 50?
02-07-2023, 12:46 PM - 2 Likes   #624
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One of the things I like about the Nikon G is that the filter ring is not attached to the front element, so when the lens is focused it will move the elements of the lens in relation to the front of the 70-200.
This helps aid in getting the best from from the setup
I did use a pentax M 50 1.7 but found it better with the G

Here is the setup using the M 50 1.7
02-07-2023, 01:02 PM - 3 Likes   #625
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Salt and Peppercorn at 5x magnification

Pentax K-1 Laowa 25mm 2.5x-5x ultra macro lens
ISO 100
1/6s at f/5.6

Both are 7 shot focus stacks merged and processed in Affinity Photo v 1.9




02-08-2023, 01:29 AM   #626
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QuoteOriginally posted by Ian Stuart Forsyth Quote
Here I used a 70-200 F4 along with a 1.4 converter and a 50 1.8 G reverse mount on the end




Can I join in the awe? These are amazing shots and thanks for sharing the info about the setup! How do you organise the light in this setup? My guess is some diffuse light from below, but I'd love to learn more about this.
02-08-2023, 12:07 PM - 2 Likes   #627
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QuoteOriginally posted by HoutHans Quote
Can I join in the awe? These are amazing shots and thanks for sharing the info about the setup! How do you organise the light in this setup? My guess is some diffuse light from below, but I'd love to learn more about this.
For the main light source I used a flash with a blue dvd case attached to create the light to dark blue background I tipped the case and light 45 degrees to the image plane about 4 inch away. A second flash was added of to the side and above the flake to supply highlights to some of the edges. I found it looked more natural to add the light for the highlights to the side with the lightest blue backdrop.

You can increase or decrease the amount of variation of the blue to black backdrop by changing the angle of the dvd case, what is nice using this method is that tonal range will always fall in the center of the frame as long as the dcd case is relatively centered within the frame and you set your exposure based on the lightest you the background to be.

Depending on the flake I may also add a second highlight flash. I also used a low power led light for framing and focusing as to not melt the flake during the preparation.
02-08-2023, 08:54 PM - 7 Likes   #628
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More using the same setup







02-08-2023, 11:21 PM   #629
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Excellent shots and thanks for sharing this info. I'll try to build something similar and then all we need is snow.....
02-11-2023, 01:15 AM - 3 Likes   #630
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QuoteOriginally posted by HoutHans Quote
Excellent shots and thanks for sharing this info. I'll try to build something similar and then all we need is snow.....
Thank you
Taken with a 50mm G reverse mounted to the camera
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