Pentax Takumar Bayonet Lens 135mm , f/2.8

Did some test shots with some Pentax SLR old film lens tonight on my Canon XSi . These images are the same image , same lens . I have the Adapter PK to Canon SLR . First shot is straight out of camera only resized to post here . Second shot is after I ran it through NIKS Software , Output Sharpener , Color Flex Pro and then Define NR . Any Cs'&Cs' welcome . Let me know if you see any improper distortion or Coma .

Checked your other sample too. Good shallow FOV.
I like the pp, worked very well.
Not sure of your sharpening parameters but if Radius is more than 1 I suggest a lower one say 0.7 then may be a tad lower sharpening Amount say ~150 (If yours is higher) that is reduce a beat of edge effect.

Can you show some image of infinity when aperture is fully open, preferably night sky, if clouds permit?

Glad to see another vintage MF user! join out thread :

https://photography-on-the.net …/showthread.php​?t=1317882

samsen wrote in post #16153369
Checked your other sample too. Good shallow FOV.
I like the pp, worked very well.
Not sure of your sharpening parameters but if Radius is more than 1 I suggest a lower one say 0.7 then may be a tad lower sharpening Amount say ~150 (If yours is higher) that is reduce a beat of edge effect.

Can you show some image of infinity when aperture is fully open, preferably night sky, if clouds permit?

I used NIKS Output Sharpener which is set to default so it only sharpens a slight amount . However the Colorflex pro because of the color edit makes an image look more sharp so i may try some adjustment there . When i get a chance i'll try a tripod exposure tonight or this weekend when i have more time . With a 50mm lens exposures have to be between 20-25 secs cause star trails start showing close to 30 . I also have a real nice Pentax SMC 28mm . Not sure the f/stop , either f/1.8 or 2.0 or 2.8 . I can get close to 35-45 secs there before trailing starts . Thanks for the comments on the image .

maverick75 wrote in post #16153372
Glad to see another vintage MF user! join out thread :

https://photography-on-the.net …/showthread.php​?t=1317882

Hey Maverick the link you posted is this same topic link . Did you mean to post another different link ? I have 5 lens i'm testing , all Pentax . 50mm , 28mm , 135mm , 70-210mm , and a 300mm f/4 (M42 mount) . As i have time i will test them for day and night shots . Only thing the zoom and 300mm exposures have to be short at night cause of trailing stars .

Probably, we have like 5 threads haha

samsen wrote in post #16153369
Checked your other sample too. Good shallow FOV.
I like the pp, worked very well.
Not sure of your sharpening parameters but if Radius is more than 1 I suggest a lower one say 0.7 then may be a tad lower sharpening Amount say ~150 (If yours is higher) that is reduce a beat of edge effect.

Can you show some image of infinity when aperture is fully open, preferably night sky, if clouds permit?

Here you go . First two are cropped at 50% and resized to 1024x . Camera on tripod using remote control . My 28mm I thought was a Pentax but been so long since I used them I forgot it was a Vivitar instead but the rest of my lens are Pentax .

These next two images are from my 80-200mm f/4 . Also cropped at 50% . All 4 pictures are best focus closest to infinity as I could get with widest aperture . For my eyes not too bad for focus . BTW all pictures are of Scorpio Heart , Antares . In the 200mm images you can barely see M4 just below and right of Antares .