Bought a used 25/28 hood for 59 dollars. I have the Hoya closeup lens coming today so going to try that against the Proxar 1m and than add the hood for whatever combo works
@Fred Miranda@ and @GMPhotography@
As I see things with your hood setup the filter is farther away from the lens,
did you already check if that has any influence on image quality?
Why we are going to thin filter rings. Trying to get closer to the lens. We may have to adjust our shims. So first order is get the lens setup in front correct than work in infinity with shims
BastianK wrote:
@Fred Miranda@@@ and @GMPhotography@@@
As I see things with your hood setup the filter is farther away from the lens,
did you already check if that has any influence on image quality?
Recently I got a cheap used ELPRO4. It has a 55mm retention ring that can catch 50mm diameter PCX.
Here is my setup. Now I can use G21's original front cap.
G Biogon 21mm + 55mm Blank Filter + SLB-50-1500PM(reverse orientation,rubber tape adhered on the edge for centering) + ELPRO4's Retention Ring
I haven't tried this for the ZM35 but this may help you.
HaruhikoT wrote:
Recently I got a cheap used ELPRO4. It has a 55mm retention ring that can catch 50mm diameter PCX.
Here is my setup. Now I can use G21's original front cap.
G Biogon 21mm + 55mm Blank Filter + SLB-50-1500PM(reverse orientation,rubber tape adhered on the edge for centering) + ELPRO4's Retention Ring
I haven't tried this for the ZM35 but this may help you.
Thanks for letting me know. I will try finding a ELPRO4.
Do you think that moving the corrective front-lens further from the lens may degrade IQ?
We are trying to keep the Zeiss OEM hood but a 49mm blank filter is needed before the entire set-up. Would that make reaching infinity even harder?
Fred Miranda wrote:
Thanks for letting me know. I will try finding a ELPRO4.
Do you think that moving the corrective front-lens further from the lens may degrade IQ?
We are trying to keep the Zeiss OEM hood but a 49mm blank filter is needed before the entire set-up. Would that make reaching infinity even harder?
In case the corrective front-lens is Meniscus, that distance may affect IQ.
If it's PCX, that should be negligible.
The difference of reaching infinity should be also negligible.
As much as I try with the ZM 35mm using a 49-52 just does not work in the long run. Sooooooo
Slim 49mm UV filter , take glass and retaining ring out
49-55mm step up I have a normal thickness
Proxar 5m
55-52 Thin step down
52mm Retaining ring
Shot sky at F8 no vignetting from the filter setup
Here is the catch to this setup. First I can't get the hood over the 49mm slim filter but that is really not a issue. But taking the whole rig down from the hood there is very little room for your fingers to screw this all in. So I carefully just used my spanner wrench on the 52mm retaining ring and screwed it all in. I probably will not be taking this off anyway but there is still room for a 52mm filter
ZM 25. I really got to test this but Im a little shocked it may just be the ticket. A Hoya 46mm +1 close up lens. In a couple casual shots the corners look really good I mean really good at F4 and at 2.8 may just match the Proxar 1mm. Now my infinity is slightly off so i have to work on both lenses now on that level
As much as I try with the ZM 35mm using a 49-52 just does not work in the long run. Sooooooo
Slim 49mm UV filter , take glass and retaining ring out
49-55mm step up I have a normal thickness
Proxar 5m
55-52 Thin step down
52mm Retaining ring
Shot sky at F8 no vignetting from the filter setup
Here is the catch to this setup. First I can't get the hood over the 49mm slim filter but that is really not a issue. But taking the whole rig down from the hood there is very little room for your fingers to screw this all in. So I carefully just used my spanner wrench on the 52mm retaining ring and screwed it all in. I probably will not be taking this off anyway but there is still room for a 52mm filter
ZM 25. I really got to test this but Im a little shocked it may just be the ticket. A Hoya 46mm +1 close up lens. In a couple casual shots the corners look really good I mean really good at F4 and at 2.8 may just match the Proxar 1mm. Now my infinity is slightly off so i have to work on both lenses now on that level...Show more →
Thanks for the update on the Hoya, I received mine today and will be testing it tomorrow.
Guy, problably there is a trick some where that make it works for me but not for you. Of course the 55mm filter has 55mm outer thread but its inner thread is 53mm. When putting retaing ring, the inner thread would be narrow down to around 50mm but it is small enough to keep the Proxar filter tightly secured in place. The trick here is that you have to screw in the retaining ring on the side of the blank 55mm ring that will be screw in on top of the 46mm to 55mm step up adapter not on the upper side that is normally done. Probably it is best to demonstrate this by using foam as HaruhikoT has done here in this thread.
I have not given up yet in the 35. I'll play some more. I may have missed a thin filter and put a regular size in. Rather have 52 all the way but I need to find a blank 52 that does not have a stop in it. I could Dremel that out. I'm trying to finish all my painting and get some free time. I painted the whole exterior of my house, painted the pool with epoxy and than my wife threw I. Painting the cool deck. I'm working that now.
teeraash wrote:
The trick here is that you have to screw in the retaining ring on the side of the blank 55mm ring that will be screw in on top of the 46mm to 55mm step up adapter not on the upper side that is normally done.
Thanks for the above description. I am waiting for my 55mm filter and will try it out.
Had a chance to go out today briefly to take some quick snaps with the ZM25 and Hoya +1 closeup filter combination. These were shot using the techart autofocus adapter in automode with the focus are set to the centre. The shots were made from approx 50 feet away with the lens set to infinity/
Here is a 100% crop of the extreme top left corner @ F8. No sharpening applied other than the defaults in Adobe CC, also no lens profile applied. Top Left by Jose Raposo, on Flickr
The 1500mm PCX finally arrived tonight. All assembled with step-up/down rings and ready to attach to Version III Techart Auto Focus adapter for Contax G lens to Sony E on the A7rII. Will post before and after test images soon.
Thank you for the recipe HaruhikoT :
Contax G Biogon 28mm
+ 46-55mm step-up ring
+ 55-52mm step-down ring <- Put the 1500mm PCX inside this. Face curved surface to camera (reversed setup).
+ 52-55mm step-up ring
