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Forum: Pentax Lens Articles
04-28-2012, 10:11 PM
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it is also important for SR (shake reduction),
as far as I know there is no possibility to fine tune focal lengths, the available values are preloaded and only firmware upgrade can alter them.
You just need to choose the closest one, as you did.
You follow the same principal with manual zooms, choose the closest one to the one actually used.
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Forum: Pentax Lens Articles
04-27-2012, 05:25 AM
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sorry, I was biased by KX green button options.
in K7 you need to choose number 2 : Tv Shift ( Camera sets shutter speed relative to the selected aperture for proper exposure )
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Forum: Pentax Lens Articles
04-27-2012, 02:09 AM
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and the Green button in Menu is selected as a Green button function , I do not have my K7 with me but there is a long list of other options.
so when you press green button with your M 50 lens attached and aperture is set to less than full open you can hear a click ( stop down metering) and you can see
a blink in a view finder??
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Forum: Pentax Lens Articles
04-24-2012, 11:04 PM
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The most convenient is to use AV with M42 lenses.
Switch the lens to Auto ( wide open) for focusing, switch back to Manual, chose desirable aperture, half press the shutter, camera will do metering and take the picture.
It will take a bit of time to get used to this routine but it is well worthy.
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Forum: Pentax Lens Articles
04-22-2012, 08:04 AM
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it is odd, on my K7 it is actually #38 "using aperture ring" ( my firmware is 1.12 )
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Forum: Pentax Lens Articles
07-24-2011, 09:36 AM
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Hey vlad2304,
I purchased recently the exactly same lens.
It is very plasticky, I did use it indoors , close-up and portrait - it was fine.
I never tried landscapes, I know those lenses need good light and F5.6 or 8 to get reasonable sharpness and contrast.
I will take some outdoor photos with mine within next few days and will post back
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Forum: Pentax Lens Articles
07-24-2011, 06:10 AM
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"Measure the light by either pressing the "Green Button", or pushing your power button to DOF preview mode (only available on select bodies). Your camera will automatically set the shutter speed for you."
On my K7 Green Button - YES , works perfectly but my nose is in the way ( I am left eyed
photographer) but DOF does not automatically set the shutter speed for me.
It stops down the aperture and shows EV bar and then I have to manually adjust with e-dial the shutter speed while holding DOF switch pushed on.
Am I missing something, looked through all menus and can not find anything relevant to it , or am I doing something wrong?
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Forum: Pentax Lens Articles
07-12-2011, 04:36 AM
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Hey BSandu, it looks like you have the "black base lens syndrome" case.
you need to get some aluminium foil and short all contacts on your camera body before mounting your black based lens.
Some people scratch the base so it becomes nice silvery shiny , I personally would not do it.
this syndrome could also cause problems with AF
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Forum: Pentax Lens Articles
07-12-2011, 04:15 AM
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Looks like this one did work,
It is definitely worth investigating and utilising M42 lenses.
Like obviously Super-Takumars but also other brands, Mamiya-Secor 55/1.4 , Rikenon 50/1.7 ,
Cosinon 50/1.8 , Pentacon 30/3.5 just to list some of my favorites.
They are all beautifully made, all metal , fast ( easy in manual focusing ) just pure pleasure to use.
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Forum: Pentax Lens Articles
07-12-2011, 03:57 AM
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No, picture insert from my ( just created ) album did not work?
I will try the different option.
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Forum: Pentax Lens Articles
07-12-2011, 03:46 AM
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Hi Sany, I will try to explain, it is not as simple as that.
The Pentax adaptor is the best, perfectly manufactured to fit K mount.
It has little black spring attached to the ring which locks the adaptor in place.
This is my first attempt to attach pictures, hopefully it will work.
To remove it just simply push the spring with your finger nail, turn it and remove it.
the location of the spring while inserted:
Some people just glue adaptor permanently to the camera body, I did have Helios lens modified like that and I did not like it.
Glued lens completely covers the access to the spring so it has to be removed otherwise you would not be able to remove the lens from the body.
Consequently the lens can not securely lock into the body, it is just inserted so you need to be very careful while turning focusing etc rings.
This kind of ( focus to infinity) adaptors does not and can not use the small pin which is utilised to lock all standard K lenses.
There are some other adaptors which will focus to infinity but most of them are not as precise as Pentax and are much harder to unlock and remove.
Some of them actually come with dedicated removal tool:
if you can not see images look at:
Pentax K to M42 - a set on Flickr |
