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Comment by kasperbergholt posted on Carl Zeiss 50mm f1.4 Planar T* ZK on Pentax K5 & Pentax K1 at 21/02/2024 - 17:14
Jonathan-Mac wrote:
Unless the lens has an A setting on the aperture ring, which I don't think it does, it will not communicate anything to the camera. You set the focal length and the camera will write shutter speed and ISO to the EXIF but the camera won't know the setting of the aperture so won't be able to write it.
The AF beep is a guide and to set exposure use either the green button to tell you a setting (also a rough guide) or chimp as necessary. Make sure the camera is in M mode.
Thank you for the feedback, appreciated! It does have a values from 2 to 22 and a 'A' setting at the end of the dial. So I guess it should work in the same way as my current go to lens, the 77mm 1.8, but without autofocus. There's a 35mm 2 in the same series, it looks amazing.Unless the lens has an A setting on the aperture ring, which I don't think it does, it will not communicate anything to the camera. You set the focal length and the camera will write shutter speed and ISO to the EXIF but the camera won't know the setting of the aperture so won't be able to write it.
The AF beep is a guide and to set exposure use either the green button to tell you a setting (also a rough guide) or chimp as necessary. Make sure the camera is in M mode.
Comment by kasperbergholt posted on Carl Zeiss 50mm f1.4 Planar T* ZK on Pentax K5 & Pentax K1 at 20/02/2024 - 08:23
davidwozhere wrote:
It should indeed bleep - but remember that the bleep is a guide, not a guarantee! When the camera is set to manual you will have to use the green button to set the correct exposure before pressing the shutter release.
Makes sense - thank you for the feedback - it's appreciated It should indeed bleep - but remember that the bleep is a guide, not a guarantee! When the camera is set to manual you will have to use the green button to set the correct exposure before pressing the shutter release.
Comment by kasperbergholt posted on Carl Zeiss 50mm f1.4 Planar T* ZK on Pentax K5 & Pentax K1 at 18/02/2024 - 11:12
davidwozhere wrote:
I don't think most of those things are properties of the lens (whatever it might be) so there is nothing for it to communicate. They are all generated by the body. What the body will not record is the f value set on the lens (unless it has an 'A' setting.
Thank you for the swift reply. So basically the Zeiss lens would work the same way as my 77mm 1.8 limited in manual mode? So that auto mode would function - and the camera beep (if set to do so) when objecsts are in focus for example?I don't think most of those things are properties of the lens (whatever it might be) so there is nothing for it to communicate. They are all generated by the body. What the body will not record is the f value set on the lens (unless it has an 'A' setting.
Comment by kasperbergholt posted on Carl Zeiss 50mm f1.4 Planar T* ZK on Pentax K5 & Pentax K1 at 16/02/2024 - 09:15
Clever people,
I'm considering getting a Carl Zeiss 50mm f1.4 Planar T* ZK lens (Pentax K mount).
Being manual focus, will it communicate exif, priority & shutter values to the camera body on the K5 and the K1? I have its cousin, the Milvus with my Nikon D3 where all values are passed on to the camera, so I would assume it's the same with th K mount version even if it's an older model.
Huge thanks in advance,
Kasper
I'm considering getting a Carl Zeiss 50mm f1.4 Planar T* ZK lens (Pentax K mount).
Being manual focus, will it communicate exif, priority & shutter values to the camera body on the K5 and the K1? I have its cousin, the Milvus with my Nikon D3 where all values are passed on to the camera, so I would assume it's the same with th K mount version even if it's an older model.
Huge thanks in advance,
Kasper
Comment by kasperbergholt posted on Carl Zeiss 50mm f1.4 Planar T* ZK on Pentax K5 & Pentax K1 at 15/02/2024 - 19:21
Jonathan-Mac wrote:
There are a few companies reconstructing very old lens designs and hoping to give a "vintage" look to photos. Unfortunately for them, you can get a better "vintage" look (much sharper, better colour and contrast, better coatings) from actual vintage lenses that are still around, working perfectly and at a fraction of the cost of the Lomography ones.
If you're considering a K-1 and are interested in vintage lenses I would say that the vintage lens experience, as well as success rate in focusing, is much better on full frame, so better a K-1 than another APS-C model.
Thank you for the swift & insightful reply - makes a lot of sense to go with a true vintage lens instead (and go full-frame). Thanks There are a few companies reconstructing very old lens designs and hoping to give a "vintage" look to photos. Unfortunately for them, you can get a better "vintage" look (much sharper, better colour and contrast, better coatings) from actual vintage lenses that are still around, working perfectly and at a fraction of the cost of the Lomography ones.
If you're considering a K-1 and are interested in vintage lenses I would say that the vintage lens experience, as well as success rate in focusing, is much better on full frame, so better a K-1 than another APS-C model.
Comment by kasperbergholt posted on Petzval 55mm f/1.7 or Lomogon 32mm f/2.5 at 14/02/2024 - 12:58
Hello clever people,
Came across the Lomography lenses by a google search yesterday - I can see some of their selection (which seems to consists of reconstructions of vintage lenses) are made with K-mount.
Does anyone have any experiences with these lenses, for example the Petzval 55 f/1.7?
Looks interesting but also like a bit strange project.
I'm using a Pentax K5 now - considering upgrading to either a Pentax K3 or a Pentax K1 sometime in the not too distant future.
Thanks in advance,
Kasper
Came across the Lomography lenses by a google search yesterday - I can see some of their selection (which seems to consists of reconstructions of vintage lenses) are made with K-mount.
Does anyone have any experiences with these lenses, for example the Petzval 55 f/1.7?
Looks interesting but also like a bit strange project.
I'm using a Pentax K5 now - considering upgrading to either a Pentax K3 or a Pentax K1 sometime in the not too distant future.
Thanks in advance,
Kasper
Comment by kasperbergholt posted on Petzval 55mm f/1.7 or Lomogon 32mm f/2.5 at 14/02/2024 - 10:05
denverclassic wrote:
Hi
I use the 120 FA on my 645N ii and z. I enjoy the results. I use Macro lens for portrait work along with macro. When using as a portrait lens I use a 1/4 black mist filter.
Thank you for the feedback! Hi
I use the 120 FA on my 645N ii and z. I enjoy the results. I use Macro lens for portrait work along with macro. When using as a portrait lens I use a 1/4 black mist filter.
Comment by kasperbergholt posted on Pentax 645 120mm 4.0 A vs FA/AF at 18/09/2023 - 17:37
Jonathan-Mac wrote:
"A" series lenses are manual focus.
"FA" series lenses are autofocus.
Both can have the aperture controlled from the camera body and therefore allow Program and Av modes (with the lens set to the "A" position). The autofocus is the only functional difference though it's possible that some coating improvements were made between the two series (but I wouldn't expect a big difference there). This goes for lenses designed for 135 format as well as 645.
The "D" in "DFA" simply designates that the lens was designed for digital cameras rather than originally for film although I think that the 645 DFA lenses all have an internal focus motor rather than using screw-drive AF and they may not cover the full film 645 image circle.
Thank you, Jonathan-Mac - this was exaxctly the information I was looking for "A" series lenses are manual focus.
"FA" series lenses are autofocus.
Both can have the aperture controlled from the camera body and therefore allow Program and Av modes (with the lens set to the "A" position). The autofocus is the only functional difference though it's possible that some coating improvements were made between the two series (but I wouldn't expect a big difference there). This goes for lenses designed for 135 format as well as 645.
The "D" in "DFA" simply designates that the lens was designed for digital cameras rather than originally for film although I think that the 645 DFA lenses all have an internal focus motor rather than using screw-drive AF and they may not cover the full film 645 image circle.
Would you happen to have experience with either of the two?
Comment by kasperbergholt posted on Pentax 645 120mm 4.0 A vs FA/AF at 18/09/2023 - 08:32
Defragged wrote:
Kasper, have you had a look at the information found here?:- link
Hope you find the answers you are looking for.
Thank you for the link Kasper, have you had a look at the information found here?:- link
Hope you find the answers you are looking for.
I get the main difference between 'auto focus' and 'non autofocus', and 'DA' and 'DFA'. But I don't think the overview article has the answer to if both lens versions pass relevant parameters on aperture (what Nikon calls 'Aperture Indexing', I'm not sure about Pentax' term for the same) to the camera.
And there's not a comparison of (minor differences) in materials, coatings and mechanics of the focusing system.
Weights seem af bit different, but I guess that's due to the autofocus system (A version: 695.2g; AF version 735g.).
Comment by kasperbergholt posted on Pentax 645 120mm 4.0 A vs FA/AF at 17/09/2023 - 19:53
You didn't say it had an 'A' setting! That WILL transmit aperture data back to the camera and vice versa and you can use AV, TV and TAV, controlling these from the camera E dials. But no AF. You can also use the F series 1.7x AF adapter, if you have one. This will increase the focal length (by 1.7x) and also costs a couple of aperture stops of light but you do get excellent AF. That 'A' setting opens lots of possibilities.