Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Olympus Micro Four Thirds

Reply
 
Thread Tools Search this Thread
Old Feb 23, 2012, 8:24 PM   #31
Senior Member
 
Join Date: Jan 2012
Location: New England, USA
Posts: 2,069
Default

If I am following you correctly then the 40mm hexanon would be roughly equivalent to the 20mm panasonic f 1.7 in terms of field of view when mounted on a pen, right?

Thanks again
__________________
in my bag: e-m1, 7-14mm pro, 14-54mm mk ii, 50-200mm mk i, 70-300mm
in my pocket: e-pm2 lumix 12-32
ramcewan is offline   Reply With Quote
Old Feb 23, 2012, 9:59 PM   #32
Senior Member
 
Join Date: Sep 2003
Location: Dallas, Texas USA
Posts: 6,483
Default

Correct, if the 40mm f1.8 Hexanon was mounted on a Konica SLR, like a T2 I used long, long ago.
Greg Chappell is offline   Reply With Quote
Old Feb 24, 2012, 7:09 AM   #33
Senior Member
 
Steven R's Avatar
 
Join Date: Apr 2005
Location: Tampa, Florida
Posts: 5,901
Default

Quote:
Originally Posted by Greg Chappell View Post
Correct, if the 40mm f1.8 Hexanon was mounted on a Konica SLR, like a T2 I used long, long ago.
Right, but understand what Greg is saying is that while mounted on a 35mm camera you get the 40mm field of view. But when you mount it on the Pen, you are getting the equivalent field of view of a 90mm lens on a 35mm.
Steven R is offline   Reply With Quote
Old Feb 24, 2012, 11:31 AM   #34
Senior Member
 
Join Date: Jan 2012
Location: New England, USA
Posts: 2,069
Default

Quote:
Originally Posted by Steven R View Post
Right, but understand what Greg is saying is that while mounted on a 35mm camera you get the 40mm field of view. But when you mount it on the Pen, you are getting the equivalent field of view of a 90mm lens on a 35mm.
ugh I am so confused... I am really only concerned about comparing legacy manual focus lenses used with an adapter on a m43 camera to m43 lenses.

are the following statements true?

So if I take a 50mm Hexanon and mount it on my m43 pen e-pl2 it is going to give me similar field of view as the 25mm panasonic lieca m43 lens.

Likewise the 40mm Hexanon mounted on my m43 pen e-pl2 is going to give me a similar field of view as the 20mm panasonic f/1.7.



If these aren't true what would be a legacy equivalent to the 25mm panasonic lieca m43?

would it be a 12.5mm ?
__________________
in my bag: e-m1, 7-14mm pro, 14-54mm mk ii, 50-200mm mk i, 70-300mm
in my pocket: e-pm2 lumix 12-32
ramcewan is offline   Reply With Quote
Old Feb 24, 2012, 1:43 PM   #35
Senior Member
 
Steven R's Avatar
 
Join Date: Apr 2005
Location: Tampa, Florida
Posts: 5,901
Default

It is really not complicated. A 4/3 with an adapter and a m4/3 lens both have the exact same field of view when mounted on a m4/3 camera, as both sensors are the same size. A 20mm 4/3 or a 20mm m4/3 lens mounted on an epl-1 would both have the same FOV.

That 4/3 FOV is equivalent to what you would see if you were looking thru a 35mm camera that had a traditional 40mm lens attached, because of the 2x crop factor of a 4/3 compared to a 35mm.

If you took that 40mm traditional lens on the m4/3 camera and looked thru the viewfinder, you would have a FOV equivalent of a 80mm lens on the old 35mm. (40 x2 =80)

So when you look at the size of any 4/3 lens, it has the same field of view on your epl-1 as a old traditional lens that would be twice it's size.
Steven R is offline   Reply With Quote
Old Feb 24, 2012, 2:32 PM   #36
Senior Member
 
Join Date: Jan 2012
Location: New England, USA
Posts: 2,069
Default

sorry Steve for being dense...

Quote:
that 40mm traditional lens on the m4/3 camera and looked thru the viewfinder, you would have a FOV equivalent of a 80mm lens on the old 35mm. (40 x2 =80)
okay - I get that the FOV is halved by the smaller sensor size.

Therefore I am thinking to get a FOV equivalent of a 50mm lens on the old 35mm I would need a 25mm lens on the m43 camera, is that correct?

And as I understand you this could be a m43 25mm, a 43 25mm with adapter or a traditional 25mm with adapter?

That's where I get lost and I think it is just the confusion that everything seems to be multiplied by 2 to get the equivalent FOV in 35mm but when you put a 35mm lens on a m43 you don't divide the FOV by 2.
__________________
in my bag: e-m1, 7-14mm pro, 14-54mm mk ii, 50-200mm mk i, 70-300mm
in my pocket: e-pm2 lumix 12-32
ramcewan is offline   Reply With Quote
Old Feb 24, 2012, 2:44 PM   #37
Senior Member
 
Join Date: Sep 2003
Location: Dallas, Texas USA
Posts: 6,483
Default

Quote:
Originally Posted by ramcewan View Post
sorry Steve for being dense...



okay - I get that the FOV is halved by the smaller sensor size.

Therefore I am thinking to get a FOV equivalent of a 50mm lens on the old 35mm I would need a 25mm lens on the m43 camera, is that correct?

And as I understand you this could be a m43 25mm, a 43 25mm with adapter or a traditional 25mm with adapter?
Correct.
Greg Chappell is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 8:03 AM.