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Your favourite “bang for the buck” lenses
- Thread starter rdeloe
- Start date
No Soup-shaming!Another Soup with the Pentax 645 A 75/2.8. He's been hitting the hard stuff.
Matt
scho
Well-known member
Just testing my Pentax 645-A lenses in the Kipon Tilt Shift adapter on the GFX 100s. Sample shot below taken through a window with the Pentax 645-A 35/3.5 at f/11 and 2 degrees of tilt and slight rise for framing. Good sharpness from near foreground to distant houses and trees. Much better construction and ergonomics compared to the Fotodiox adapter.
MGrayson
Subscriber and Workshop Member
Well, this is odd - Got the Pentax 645 A 35/3.5, got the Kipon Hassy X T/S adapter. Shot at f/11 and ...
Never seen THAT distortion before. ES artifact? Pincushion distortion of a kind never before seen on Earth?
I like the way the Pentax 645 A lenses render. I'm just not sure I'll ever get a good wide shift out of them. The 75 and 150 are great.
Matt
Never seen THAT distortion before. ES artifact? Pincushion distortion of a kind never before seen on Earth?
I like the way the Pentax 645 A lenses render. I'm just not sure I'll ever get a good wide shift out of them. The 75 and 150 are great.
Matt
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Shashin
Well-known member
You might have to return. Maybe the building is really like that--I mean the camera never lies...
rdeloe
Well-known member
How much did you shift? That looks like the dreaded moustache distortion.Well, this is odd - Got the Pentax 645 A 35/3.5, got the Kipon Hassy X T/S adapter. Shot at f/11 and ...
Never seen THAT distortion before. ES artifact? Pincushion distortion of a kind never before seen on Earth?
I like the way the Pentax 645 A lenses render. I'm just not sure I'll ever get a good wide shift out of them. The 75 and 150 are great.
Matt
Check this out: this is what you get with 15mm of shift in landscape up, down, left and right. In the landscape section, see how the ends turn up at the far edges of the image? That's what your building is doing. This isn't a flaw in the lens... exactly. It's simply not meant to shift that far. A 15mm shift on the long edge is way outside the design image circle. The moustache runs wild and free in that zone!
MGrayson
Subscriber and Workshop Member
Yeah, that looks like it. I think gentle shifts are the rule here. If I want crazy shifts, I'll use an ultra wide and keystone correct.
BTW, I'm always amazed at people using Leica M (or other FF) glass on Medium Format cameras. Lenses are not designed to be decent outside their sensor's circumscribed circle. I guess you can crop square and get something not available on a FF camera,
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rdeloe
Well-known member
It would be awesome if Adobe had a profile that could fix this. The profile in LR for the FA 35 doesn't do much for moustache distortion (which that lens has too), and it doesn't do anything useful for shifted images.
Doppler9000
Active member
Like a drunken Tom Selleck!
MGrayson
Subscriber and Workshop Member
The name "Mustache Distortion Towers - Dr. Seuss, Architect" should have been a giveaway...
Trevor Davis
Member
Because of this thread, I now have the Pentax-A 645 lenses in 35 and 75 mm. I have a Fotodiox non shifting adapter, which is barely passable. Shifting limitations aside, I would like to use these on my Cambo WRS. Is anyone doing this with any success?
rdeloe
Well-known member
Cambo makes a WRS lens plate for Mamiya 645, but I'm not seeing one for Pentax 645. That would be the ideal solution. Hopefully a WRS user can jump in and share some good news.
MGrayson
Subscriber and Workshop Member
Quick update on Mamiya 645 50mm T/S. My second copy is better, although I have to check with both adapters, as one needed sanding down to allow infinity focus on a few lenses. More to come. These are amazing lenses for the price! And the have image circles that are large enough to shift a full 645 sensor 10 to 13 mm.
scho
Well-known member
rdeloe
Well-known member
The one copy I tried of that lens did not impress, but copy variation is a thing. I hope yours is a star.
One nice thing about that lens is it comes off the shift adapter easily, meaning it can be remounted to a board on digital view cameras where the M645 flange distance is a problem relative to the space available between standards.
MGrayson
Subscriber and Workshop Member
Critical is the use of the Phocus adaptive CA tool. Color fringing does not go away at f/11 otherwise.So I export TIFFS from Phocus.
This lens flared like crazy on my GFX. I would hesitate to recommend it, but maybe you are more lucky!
MGrayson
Subscriber and Workshop Member
The sun is shining full on the lens, and it's shot through a dirty window, as opening the window would create bad heat waves. Very ... artistic!
X2D, Kipon adapter, Mamiya 645 50mm T/S at f/11.
Matt
Try again at night! Street lights were causing quite a lot of flare.The sun is shining full on the lens, and it's shot through a dirty window, as opening the window would create bad heat waves. Very ... artistic!
X2D, Kipon adapter, Mamiya 645 50mm T/S at f/11.
Matt