Canon Digital Photography Forums  

Go Back   Canon Digital Photography Forums > 'Sharing Knowhow' section > Talk About Photography
Register Rules FAQ Members List Search Today's Posts Mark Forums Read

Thread Tools Display Modes
Old 1st of September 2010 (Wed)   #1
Join Date: Jun 2010
Posts: 48
Default Manual vs Auto focus IQ

I've been reading more and more about the manual focus lenses that zeiss, samyang, leica have to offer and I have a huge question, why are these lenses often accredited with the sharpest lens award? The only trend i know is that they are 1) expensive as hell, so maybe the material used is as top as you can get, or 2) that the manual focus allows for yourself to see when the image is the sharpest.

Is it possible for Canon/Nikon to match these lenses(Manual OR Autofocus)? or will they purposely not do so because they would be developing lenses that 90% of their target market cannot afford?

Thanks in advance!
My Flickr / Deviantart
makion is offline   Reply With Quote
This ad block will go away when you log in as member
Old 1st of September 2010 (Wed)   #2
Admin (type T-2000)
CyberDyneSystems's Avatar
Join Date: Apr 2003
Location: Providence RI
Posts: 40,488
Default Re: Manual vs Auto focus IQ

I doubt that the correlation you see between these MF lenses and sharpness is the result of any MF/Sharpness cause and effect.
Note the name Zeiss, and the cost of these MF only lenses, and you are a lot closer to finding your true cause and effect.

As to the idea of a reluctance to create a sharp lens with AF, no this theory too is looking in the wrong place..
You are missing the sharpest lenses made in your research, sharper than any Zeiss, those being the super-telephotos.

The 300m f/2.8, 200mm f/2, and 500mm f/4's of the world,.
...these are AF, and much sharper than anything Zeiss is making.

So the theory that Canon/Nikon won't make sharp AF lenses is disproven by their existence.

Last edited by CyberDyneSystems : 1st of September 2010 (Wed) at 11:16.
CyberDyneSystems is offline   Reply With Quote
Old 1st of September 2010 (Wed)   #3
Cream of the Crop
Join Date: Dec 2006
Posts: 25,875
Default Re: Manual vs Auto focus IQ

Its the optics, not the focus. Like CyberDyneSystem says these names are the most respected lens companies for a reason, and many have been for decades.
gonzogolf is offline   Reply With Quote
This ad block will go away when you log in as member

Thread Tools
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Manual or auto focus bobecuame General Photography Talk 16 20th of December 2009 (Sun) 13:49
Manual Focus, Auto Focus, Grid Focus Screen POTN Head Canon EOS Digital Cameras 17 6th of August 2009 (Thu) 08:22
Trying To Make Sense Of Auto-Focus and Manual Focus! (20D) Mike-DT6 General Photography Talk 3 25th of December 2007 (Tue) 21:40
Auto Focus or Manual? WyzMan Canon EOS Digital Cameras 16 24th of August 2005 (Wed) 14:49
Manual focus or Auto? MrGibbage General Photography Talk 9 15th of July 2005 (Fri) 02:32

All times are GMT -5. The time now is 04:22.

Powered by vBulletin® Version 3.6.12
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
This forum is not affiliated with Canon in any way and is run as a free user helpsite by Pekka Saarinen, Helsinki Finland. You will need to register in order to be able to post messages. Cookies are required for registering and posting. HTML in messages is not allowed, plain website addresses are automatically made active by the board.