The Filters We Need With Digital...

Started Oct 5, 2008 | Discussions thread
DaSigmaGuy Forum Pro • Posts: 12,304
Re: The “Non-Filter” You Need, and the Filter You Don’t

Gregory King wrote:

DaSigmaGuy wrote:

Funny you should bring up this subject Joe. I have just bought a
Tamron SP 300mm f2.8 LD IF and while searching for sites with more
info about it I came across a lens test with a remarkable
finding...As you probably know, Tamron used to offer an optional
112mm "normal" filter for the front of the lens. I dont know what a
"normal" filter is but apparently the tester has found his Tamron
300/2.8 to be considerably sharper with this filter on the lens than
without it!!!
He has even posted MTF graphs to show the difference, with and
without the 112mm normal filter.
If you have time, perhaps you would like to read his article to try
and work out whats going on. After reading it I now feel perhaps I
should try to get one of these filters or my lens wont be as sharp as
without one.

I have one of came with the filter. I can run this test
if you like (minus the MTF graphs.

Thats would be great Greg but can you please make sure you also do a with/without the front filter test and also a with/without the rear 43mm filter too, because I've noticed a difference when I take the rear filter out of mine.

-- hide signature --
 DaSigmaGuy's gear list:DaSigmaGuy's gear list
Fujifilm FinePix F660EXR Sigma SD10 Sigma SD14 Samsung Galaxy S7 +25 more
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow