SMC M 50 mm 1.7

littledrawe · 11-10-2010, 09:53 PM

I am wondering about using the M series lens on my K2000. I enabled the use of the aperture ring in the menus and when I turn my camera off and then back on it asks for the focal length. Should I put the 50 mm value in or do I need to do the math for the conversion with the manual film lens to the digital SLR. If i need to input the conversion, what does a 50mm translate to for the DSLR?

Adam · 11-10-2010, 09:56 PM

50mm is fine- the focal length is the same regardless of whether it's digital or film.

JeffJS · 11-11-2010, 01:08 AM

Yep... 50=50 regardless of what camera you put it on. I'm sure someone else will step in here and explain field of view (HCC posted a nice graphic of it in another thread asking exactly the same question) is that of a 75mm lens (but it is Still a 50mm lens)..

Then turn the camera on and go shoot some photos with it..

KxBlaze · 11-11-2010, 02:11 AM

Yeah, put 50. That will help the camera to set the proper SR.

11-10-2010, 09:53 PM	#1
littledrawe Veteran Member Join Date: Jan 2010 Location: Red Rock Photos: Gallery \| Albums Posts: 2,514	SMC M 50 mm 1.7 I am wondering about using the M series lens on my K2000. I enabled the use of the aperture ring in the menus and when I turn my camera off and then back on it asks for the focal length. Should I put the 50 mm value in or do I need to do the math for the conversion with the manual film lens to the digital SLR. If i need to input the conversion, what does a 50mm translate to for the DSLR?

11-10-2010, 09:56 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	50mm is fine- the focal length is the same regardless of whether it's digital or film. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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11-11-2010, 01:08 AM	#3
JeffJS Inactive Account Join Date: Aug 2008 Location: Michigan, USA Photos: Gallery \| Albums Posts: 7,484	Yep... 50=50 regardless of what camera you put it on. I'm sure someone else will step in here and explain field of view (HCC posted a nice graphic of it in another thread asking exactly the same question) is that of a 75mm lens (but it is Still a 50mm lens).. Then turn the camera on and go shoot some photos with it..

11-11-2010, 02:11 AM	#4
KxBlaze Veteran Member Join Date: Feb 2010 Location: California Photos: Gallery Posts: 1,602	Yeah, put 50. That will help the camera to set the proper SR.