Jump to content

Question about 35mm equivalent FOV

Pepino1976
 Share

Recommended Posts

Pepino1976 Newbie

Pepino1976

Posted
Posted

Thinking of 35mm film equivalent.

 

I want to use an Olympus Zuiko 100mm f/2.8 lens on my Fuji X-Pro2.

 

If I use a Fotodiox adapter, will the 35mm equivalent be 150mm?

 

If I use a Metabones Speed Booster Ultra (.71), will the 35mm equivalent be 71mm?

 

 

I'm asking because on my previous Olympus OM-D camera when I used an adapted Olympus Zuiko lens on it the focal length became two times. So the 100mm would act like a 200mm. If I used a Metabones Speed Booster Ultra, it would act like a 142mm (2 x .71 x focal length).

 

 

Thanks

Link to post
Share on other sites
suutsch Newbie

suutsch

Posted
Posted

 

If I use a Fotodiox adapter, will the 35mm equivalent be 150mm?

Correct.

If I use a Metabones Speed Booster Ultra (.71), will the 35mm equivalent be 71mm?

Wrong.

The 35mm equiv. will be 100mm x 0.71 x 1,5 = 106.5mm. The MB adapter makes the lens "wider" and increases the maximum aperture by 1 stop. So you will get a nice ~105mm f/2 lens.

Link to post
Share on other sites
Pepino1976 Newbie

Pepino1976

Posted
  • Author
Posted (edited)

Correct.

Wrong.

 

 

Thanks! I might get the Metabones Speed Booster Ultra then for my Olympus Zuikos. Plus the f-stop gets one stop faster!

 

21mm f/3.5 = 22.4 mm f/2.5

100mm f/2.8 = 106.5 mm f/2

135mm f/3.5 = 143.8 mm f/2.5

Edited by Pepino1976
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Similar Content

  • Posts

    • thelostkiwi
      Looking for Full Frame lenses to adapt to GFX

      By thelostkiwi · Posted

      I also use a Nikon to GFX Fringer and it works very well.  24mm f/1.8 vignettes so best used on 35mm mode.  50mm f/1.8 covers the entire frame very well with no issues and is a superb little lens. 105mm Sigma vignettes slightly but is perfectly usable. 300 f/4 likewise the 105.  I have a 70-200 f/20+.8 incoming to test so will report back but I'm expecting a little vignetting.  Even in 35mm mode the image is still 60MP and if you're prepared to manually crop and correct you can get 80-90 MP images.  I also have a C/Y to GFX adapter.  The 24mm Sigma Superwide vignettes strongly. Ditto 28-80 Zeiss Sonnar. 80-200 f/4 Sonnar is perfectly usable. All work fine as 35mm mode lenses.  I also have an M42 adapter which I tried with the Carl Zeiss Jena 135mm f/3.5 with good results. 
    • Trevor R
      Image correction with GF20-35

      By Trevor R · Posted

      Thank you. I will research it.
    • jerryy
      Image correction with GF20-35

      By jerryy · Posted

      Ahh, the infamous brick wall photos… 😀 According to internet lore, if the dng converter does not properly apply the corrections, you can have it apply custom profiles that should work for you. How to do that is waaaaaay outside of this comment’s scope, but there are plenty of sites listed in the search engines that step you through the processes. Best wishes.
    • Trevor R
      Image correction with GF20-35

      By Trevor R · Posted

      Jerry Thank you very much. That is extremely helpful. It seems that the camera and the lens have the latest firmware update, so it appears that the corrections should be applied automatically. The lens arrived this afternoon and I took some quick test shots, in which the correct lens information appeared in the EXIF files, so that sounds good. I used Adobe DNG converter to convert the Raw (RAF) files, and then opened the DNG files and saved them in PSD format. However, with a beautiful, clear, cloudless blue sky, there were no lines near the edges to check if distortion had been corrected. Another day I plan to photograph a brick wall. Thank you for your help.
    • jerryy
      Image correction with GF20-35

      By jerryy · Posted

      Typically you need to make sure the lens is compatible with the camera, i.e. check the lens compatibility charts for your camera, then make sure the respective firmwares are updated so older issues are resolved. After that, each lens has a manufacturer’s profile which will be embedded into the raw file meta data for the images captured using that lens. From there, it is up to the raw conversion software to apply the lens correction to the image. Different converters do that differently, some automatically, some only if a setting is turned on. For in-camera jpegs, the on-board converter does the corrections automatically, assuming the camera recognizes the lens, it applies a generic profile otherwise. I do not know if that can be turned off or not.
×
×
  • Create New...