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Pentax Q
#46
[quote name='Sammy' timestamp='1309070023' post='9551']

That´s simply wrong. The long Pana and Oly tele zooms compare actually very well in terms of weight and size to DSLR lenses. To help you out with the facts:



Panasonic 100-300: 520 g

Olympus 75-300: 430 g

Nikon 80-400: 1340 g

Canon 100-400: 1360 g

Tokina 80-400: 1020 g

Sigma 120-400: 1750 g

Tamron 200-500: 1237 g



A mFT cam plus tele zoom with 600 mm reach weighs roughly as much (or little) as a mid-range DSLR body (Canon 7D, Nikon 300s) only... <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt='Tongue' />

[/quote]

They do not compare well at all, actually....



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!

No one would even consider a lens with such tiny max. apertures on full frame. The reason for its small weight is the ridiculously small aperture, not the mirrorlessness and not even the smaller sensor.



It is in no way comparable then to the Canon 100-400mm or the Tamron 200-500mm for instance, and yet you make that comparison.



If you compare actual equivalent lenses, you will notice that the Olympus lenses actually are more expensive and more heavy.



Take a look at for instance the Olympus 35-100mm f2 (yes I know, not an MFT lens, so have to get the 4/3rds one). Equivalent focal length to FF: 70-200mm.

Equivalent f-value: f4.

So... it is comparable to the Canon 70-200mm f4 L IS USM on full frame.

Weight 35-100mm f2: 1650 grams.



Weight of 70-200mm f4 L IS USM: 760 grams.

Weight of EOS 5D mk II: 907 grams (including battery and card).

Weight of 5D mk II with 70-200mm f4 L IS USM: 1667 grams.



So.... weight of full frame 21mp body + lens, same weight as LENS ONLY for Olympus. Even the smallest, lightest Olympus MFT body would make that Olympus combination more heavy.



Your "facts" you compare with are as valid as saying:

"Oh look, that Nikon AF-S 50mm f1.8 is WAY lighter than that Canon 50mm f1.2 L USM".

A totally silly comparison. Compare things that actually are comparable...



Of course a smaller aperture lens is less heavy than a fast lens. Of course, a 400mm f5.6 is a lot lighter than a 400mm f2.8 lens. And a 400mm f11 lens would be even way more light.
  


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

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