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Cambo Actus + GFX 100S + Canon 90 TS/E and Rodenstock 105 Digaron HR Macro
- Thread starter Kuky74
- Start date
+/-10mm no issues, haven't tried +/-12mm. When GF TSE comes it going to be +/-16mm.
That’s good news.
Second test with the Rodenstock 105mm, this time magnification 1:1
Cambo says 82mm image circle and 16mm horizontal shift and 18mm vertical shift are possible on GFX. As you can see they are pretty conservative. IMHO lens is razor sharp across the image and even you can go more than the declared shifts.
Shot with Cambo Actus-XL with focus driven by Cognisys stepper motor.
Magnification is 1:1. Rodenstock 105 HR Macro is set at F/5.6 and the ring used to drive the internal floating element is set at B=1
9 movements were shot combining horizontal shift 20mm and vertical shift 20mm.
Every movement was focus stacked to avoid user error on focus. Stacking is done with RAW-in-DNG-out in Helicon Focus. The resulting 9 DNG files are merged in Lightroom into a final DNG. DNG is exported as TIFF with default sharpening in LR (40). Guidelines are done in Photoshop and the result is exported as JPG maximum quality, sRGB.
All small errors on image (small blurred areas,halos, missing parts) are due to focus stacking procedure and were not painted out because I am only concerned with checking sharpness and vignetting.
The JPG is best seen in Photoshop to verify sharpness.
If you want to have a final verdict you can download the DNG file and play with it.
LINK -----> >> LINK <<
Cambo says 82mm image circle and 16mm horizontal shift and 18mm vertical shift are possible on GFX. As you can see they are pretty conservative. IMHO lens is razor sharp across the image and even you can go more than the declared shifts.
Shot with Cambo Actus-XL with focus driven by Cognisys stepper motor.
Magnification is 1:1. Rodenstock 105 HR Macro is set at F/5.6 and the ring used to drive the internal floating element is set at B=1
9 movements were shot combining horizontal shift 20mm and vertical shift 20mm.
Every movement was focus stacked to avoid user error on focus. Stacking is done with RAW-in-DNG-out in Helicon Focus. The resulting 9 DNG files are merged in Lightroom into a final DNG. DNG is exported as TIFF with default sharpening in LR (40). Guidelines are done in Photoshop and the result is exported as JPG maximum quality, sRGB.
All small errors on image (small blurred areas,halos, missing parts) are due to focus stacking procedure and were not painted out because I am only concerned with checking sharpness and vignetting.
The JPG is best seen in Photoshop to verify sharpness.
If you want to have a final verdict you can download the DNG file and play with it.
LINK -----> >> LINK <<
For the moment I am using
Dist/Rev = 16.00mm
Backlash = 0
Seems to be working quite precisely, if I will change them I will post it here.
Are you not satisfied with the Cognisys on the Actus rear standard?
Do you think there are advantages on the Sweebo compared to Actus (except the price)?
Dist/Rev = 16.00mm
Backlash = 0
Seems to be working quite precisely, if I will change them I will post it here.
Are you not satisfied with the Cognisys on the Actus rear standard?
Do you think there are advantages on the Sweebo compared to Actus (except the price)?
I never tried it. It wasn’t obvious to me how to make it work, and I decided I wanted to do stacking on a camera with symmetric movements. My Actus is not symmetric.
I like it because it’s kind of an Erector Set, you can mix and match pieces to get what you want.
Thanks.
My Actus doesn’t have the same movements at the front and back standards.
The TC-1 is if anything more precise.
I must have a different Actus.
I have a Cambo Ultima D + Upgrade kit ACXL-365 to Actus-XL.
What movements are not symmetrical in your case?
Are you reffering to the fact it can do only 20mm vertical although horizontally it can do 25mm?
BTW, just found out today when testing the Rodie 105 that you cannot do higher magnifications than 1:1 with the standard 300mm rail. More money to sink with extensions and the macro bellows.....
What movements are not symmetrical in your case?
Are you reffering to the fact it can do only 20mm vertical although horizontally it can do 25mm?
BTW, just found out today when testing the Rodie 105 that you cannot do higher magnifications than 1:1 with the standard 300mm rail. More money to sink with extensions and the macro bellows.....
I have a Cambo Ultima II with the Actus upgrade kit. That is symmetrical.
I also have a Cambo Actus-GFX. That is not symmetrical. Front tilt & swing, rear shift. I have added the fine focus gear to that camera. I much prefer the focusing on the TC-1, but with the fine focus gear, the Actus is easy enough to focus precisely.
I am using a macro bellows on my film scanning setup. I need it to fill the 33x44 frame with a 24x36 mm negative. I'm using the Ultima extension rail.
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https://blog.kasson.com
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Yes, Cambo Actus GFX is not symmetrical. I thought you were referring to the Actus-XL and I didn't understand. Now it is clear. But I will have to chase one of these Cambo GFX cameras, testing the Actus-XL in field work made me understand it is not a solution outside of a studio (which I knew but I thought I can have a workaround. But it is tooooo heavy)
Yeah, I have big trouble understanding how to focus single shots with the Actus-XL. I ruined quite a lot of shots in the field. I don't use the camera yet for paid jobs because of that. I have to understand what I am doing wrong.
Focus stacking it is a different story. I quite like how it behaves, better than my expectations.
Cool. If it is possible can you tell me what extension rail are you using and what magnification can you go with the Rodie 105? Sorry to ask so many questions, people with this setup are 1 in a million
Later edit: Although filling 33x44 frame with a 24x36 is lower than 1:1, it is around 1:1.2 magnification. I can go 1:1 with the standard bellows (AC-214) and 300mm rail on the Rodie 105
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I think it's this one:
Loading…
digitalback.com
I haven't tried, but I'm not using anywhere near the bellows and rail extension I have.
Maybe I could, too, but I thought the bellows was getting pretty taut and I swapped it out for a longer one.Sorry to ask so many questions, people with this setup are 1 in a million
Later edit: Although filling 33x44 frame with a 24x36 is lower than 1:1, it is around 1:1.2 magnification. I can go 1:1 with the standard bellows (AC-214) on the Rodie 105
It's about 1.22:1. 36mm on the subject is 44 mm on the camera sensor.I think it's this one:
https://digitalback.com/products/cambo-lm-65-monorail-extension-65cm
I haven't tried, but I'm not using anywhere near the bellows and rail extension I have.
Sorry to ask so many questions, people with this setup are 1 in a million
Later edit: Although filling 33x44 frame with a 24x36 is lower than 1:1,
I thought 36mm on the subject and 44 mm sensor is magnification 1:1.22 ?? Maybe I am wrong?
I thought that before the colon it is the size of the subject and after the colon it is the size of the sensor ????
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The convention is that the image side comes before the colon, and the object side after the colon. So 1:2 is 0.5x magnification, and 2:1 is 2x magnification.
Yes, you are correct. It is the other way around. My brain was not working last night:-(
BTW, I thought about it and you cannot use the Cognisys motor on the Actus GFX. Actually I talked to someone at Cambo and he told me they might make the adapter for the Actus-MV if they see enough demand for it.
Anyway with the Actus-XL and the adapter for Cognisys (>>LINK<< ) which probably you are aware of you can have a symmetrical camera with rear standard focus stacking. It works quite well.
BTW, I thought about it and you cannot use the Cognisys motor on the Actus GFX. Actually I talked to someone at Cambo and he told me they might make the adapter for the Actus-MV if they see enough demand for it.
Anyway with the Actus-XL and the adapter for Cognisys (>>LINK<< ) which probably you are aware of you can have a symmetrical camera with rear standard focus stacking. It works quite well.
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