Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-29-2011, 03:17 PM   #1
Senior Member




Join Date: Jun 2011
Photos: Gallery | Albums
Posts: 160
Question about the medium format

I no nothing about the full frame or medium format cameras, but I'm not planning on buying one anytime soon; this is just from my own personal curiosity, as I only have a humble Kx.

So from what I was able to gather, FF and medium use a larger sensor and take a 'higher definition' picture then the regular aps-c sensor cameras. Also, what are these used for mainly? Do they have a specialized purpose/use or just a huge upgrade from the aps-c?

06-29-2011, 03:49 PM   #2
MJL
Site Supporter
MJL's Avatar

Join Date: Jan 2011
Location: The Canadian WetCoast
Photos: Albums
Posts: 365
Good question

FF sensor size = traditional 35mm film, which is 35X24, therefore it is at least 50% bigger than most APS-C. Most people use FF because of the "legacy" lenses which focal length would be multiply by ~1.5X when using on an APS-C, i.e. a 20mm super wide angle becomes a "mere" 30mm wide angle. Imagine the benefit of owning a FF when you have half a dozen expensive 35mm legacy lenses - you don't have to switch into a new 14mm to get the same coverage of the old 21mm!

MF is the same, lot of digital backs for them are not FF, i.e. the sensors are smaller than 6X6cm. Hence, the "crop factor" also apply to these MF lenses also. Since the FF MF digital back itself typically cost >$15K, many casual MF users just switch into "cheaper" 35mm FF. Only the professional with an entire MF system would stay with digital MF backs. Many people argue MF lenses are better, personally I agree but these lenses are also bigger and slower (f/2.8 or smaller), which are best suit for studio work.

Hope this information help.
06-29-2011, 04:40 PM   #3
Senior Member




Join Date: Jun 2011
Photos: Gallery | Albums
Posts: 160
Original Poster
Thank you for your reply and helpful explanation of these things.
06-29-2011, 04:45 PM   #4
Pentaxian




Join Date: Jul 2009
Location: Seattle
Posts: 6,988
Let's not forget that a 105mm f2.4 lens for a Pentax 6x7 camera, for example, may not sound like a fast lens by 135 format standards but the DOF is several stops more shallow for equal aperture and equal equivalent focal length on these larger formats.

The post your medium format photo section is full of shots that are not done in a studio. What it's best suited for, IMHO, goes well beyond the studio if you're a person that doesn't think a camera has to be a matter of convenience to use.


Last edited by tuco; 06-29-2011 at 04:59 PM.
06-29-2011, 05:07 PM   #5
Veteran Member




Join Date: Feb 2011
Photos: Gallery
Posts: 573
It is all about the image quality.
06-30-2011, 07:10 AM   #6
Veteran Member
Nesster's Avatar

Join Date: Oct 2006
Location: NJ USA
Photos: Gallery
Posts: 13,047
Larger sensors have advantages in dynamic range and tonal resolution, quite apart from the number of pixels recorded.

To amplify Tuco's post - what he describes applies to having the subject be the same relative size in the frame. In other words, using a 105 with an APS-C camera you would need to back away to get a full head and shoulders shot to take up most of the frame; with full frame 35mm you can get closer; and with 6x7 you get closer still. As we know from experience, the closer we are the shallower the DOF.
06-30-2011, 03:12 PM   #7
Senior Member




Join Date: Jun 2011
Photos: Gallery | Albums
Posts: 160
Original Poster
thanks for the continued information and replies. Explains quite a bit haha.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
aps-c, camera, cameras, format, medium, medium format, sensor
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
new to medium format krystalgem85 Pentax Medium Format 3 08-02-2010 02:20 PM
Medium format... D4rknezz Troubleshooting and Beginner Help 9 04-06-2010 03:59 PM
Question about entering Medium Format shadowbecomeswhite Pentax Medium Format 15 07-10-2009 06:46 AM
Medium Format Question Slick Pentax Medium Format 29 02-08-2008 07:24 AM



All times are GMT -7. The time now is 08:02 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top