• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Forums > Back > Pentax Q
Guest
Unregistered
 
#47
06-26-2011, 08:58 AM
[quote name='Brightcolours' timestamp='1309074520' post='9553']The Olympus 70-300mm f4.8-6.7 for instance.... It is equivalent to 140-600mm on full frame, yes. But look at that aperture (or rather: f-value): equivalent aperture of f9.6-13.4!



At some stage these "equivalent aperture" calculations cease to make sense. You easily managed to reach this stage. 600 mm on full frame - wow! - that´s costly and you need a truck to move it. Anyhow, for tele shooting achieving sufficient DOF poses typically more of a problem than the other way around. Hence, in practical terms, in addition to the massive size and weight advantage, a system like mFT is in many situations indeed preferable.
  Reply


Messages In This Thread
Pentax Q - by joachim - 06-23-2011, 06:18 AM
Pentax Q - by Klaus - 06-23-2011, 07:21 AM
Pentax Q - by popo - 06-23-2011, 07:28 AM
Pentax Q - by netrex - 06-23-2011, 07:53 AM
Pentax Q - by joachim - 06-23-2011, 08:08 AM
Pentax Q - by mst - 06-23-2011, 08:38 AM
Pentax Q - by mst - 06-23-2011, 08:39 AM
Pentax Q - by Brightcolours - 06-23-2011, 08:44 AM
Pentax Q - by Guest - 06-23-2011, 08:50 AM
Pentax Q - by Guest - 06-23-2011, 09:01 AM
Pentax Q - by mst - 06-23-2011, 09:04 AM
Pentax Q - by Klaus - 06-23-2011, 09:05 AM
Pentax Q - by Klaus - 06-23-2011, 09:08 AM
Pentax Q - by joachim - 06-23-2011, 09:22 AM
Pentax Q - by Guest - 06-23-2011, 09:23 AM
Pentax Q - by Sylvain - 06-23-2011, 09:44 AM
Pentax Q - by joachim - 06-23-2011, 09:56 AM
Pentax Q - by mst - 06-23-2011, 10:02 AM
Pentax Q - by joachim - 06-23-2011, 10:32 AM
Pentax Q - by Klaus - 06-23-2011, 10:46 AM
Pentax Q - by joachim - 06-23-2011, 11:38 AM
Pentax Q - by popo - 06-23-2011, 11:39 AM
Pentax Q - by Brightcolours - 06-23-2011, 11:54 AM
Pentax Q - by Guest - 06-23-2011, 01:09 PM
Pentax Q - by Kodachrome 25 - 06-23-2011, 01:40 PM
Pentax Q - by Klaus - 06-23-2011, 02:11 PM
Pentax Q - by mst - 06-23-2011, 02:19 PM
Pentax Q - by thxbb12 - 06-23-2011, 04:46 PM
Pentax Q - by netrex - 06-23-2011, 04:47 PM
Pentax Q - by wim - 06-23-2011, 04:55 PM
Pentax Q - by popo - 06-23-2011, 05:14 PM
Pentax Q - by boren - 06-23-2011, 05:15 PM
Pentax Q - by Brightcolours - 06-23-2011, 05:58 PM
Pentax Q - by borisbg - 06-23-2011, 07:30 PM
Pentax Q - by boren - 06-23-2011, 11:06 PM
Pentax Q - by Albert - 06-25-2011, 03:23 AM
Pentax Q - by popo - 06-25-2011, 07:40 AM
Pentax Q - by Brightcolours - 06-25-2011, 09:43 AM
Pentax Q - by Klaus - 06-25-2011, 10:24 AM
Pentax Q - by boren - 06-25-2011, 10:38 AM
Pentax Q - by popo - 06-25-2011, 11:08 AM
Pentax Q - by Brightcolours - 06-25-2011, 11:18 AM
Pentax Q - by popo - 06-25-2011, 11:37 AM
Pentax Q - by Albert - 06-26-2011, 03:32 AM
Pentax Q - by Guest - 06-26-2011, 06:33 AM
Pentax Q - by Brightcolours - 06-26-2011, 07:48 AM
Pentax Q - by Guest - 06-26-2011, 08:58 AM
Pentax Q - by Klaus - 06-26-2011, 09:18 AM
Pentax Q - by Brightcolours - 06-26-2011, 09:28 AM
Pentax Q - by popo - 06-26-2011, 09:32 AM
Pentax Q - by Guest - 06-26-2011, 09:40 AM
Pentax Q - by Klaus - 06-26-2011, 09:53 AM
Pentax Q - by popo - 06-26-2011, 09:56 AM
Pentax Q - by Brightcolours - 06-26-2011, 10:08 AM
Pentax Q - by Guest - 06-26-2011, 10:22 AM
Pentax Q - by Klaus - 06-26-2011, 10:27 AM
Pentax Q - by popo - 06-26-2011, 10:45 AM
Pentax Q - by Brightcolours - 06-26-2011, 11:27 AM
Pentax Q - by Brightcolours - 06-26-2011, 11:34 AM
Pentax Q - by Klaus - 06-26-2011, 12:37 PM
Pentax Q - by Brightcolours - 07-01-2011, 09:17 AM
Pentax Q - by Steinar1 - 07-01-2011, 10:09 AM
Pentax Q - by Brightcolours - 07-01-2011, 11:28 AM

Forum Jump:


Users browsing this thread: 5 Guest(s)