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KarelDH
Joined: 24 Mar 2011 Posts: 169 Location: Belgium
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Posted: Fri May 06, 2011 9:57 am Post subject: tamron 400mm f=7.5 |
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KarelDH wrote:
hi,
while i was cleaning out my lens box i found an old tamron 400mm.
i remember buying it at a flea market for about 3 uero,
but sins this was in the beginning of my addiction ( yeah u know it is :p ).
and my focusing whit manual lenses was bad it never got the attention it deserved.
actually, its pritty sharp ( wipes the flour with my Olympus 70-300mm ).
not allot of ca, bit non contrastsy, in these times thats not really a problem.
I am a bit sad that i cant get infinity so no moon shot ( its like 1mm short )
Out of the box no tweaks.
100% crop
is this good or bad ? i could be wrong
tnx |
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Himself
Joined: 01 Mar 2007 Posts: 3245 Location: Montreal
Expire: 2013-05-30
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Posted: Fri May 06, 2011 11:15 am Post subject: |
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Himself wrote:
That 400/7.5 makes a 800mm f/15 on your camera.
Dark, very dark.
Pictures are underexposed. You should use a tripod. _________________ Moderator Himself |
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KarelDH
Joined: 24 Mar 2011 Posts: 169 Location: Belgium
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Posted: Fri May 06, 2011 11:26 am Post subject: |
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KarelDH wrote:
Um, you multiply the f value ?.
i only thought u needed to multiply the mm, or am i wrong about this ?
are thy so under underexposed ?
karel |
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ManualFocus-G
Joined: 29 Dec 2008 Posts: 6622 Location: United Kingdom
Expire: 2014-11-24
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Posted: Fri May 06, 2011 11:28 am Post subject: |
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ManualFocus-G wrote:
Looks like it's resolving a lot of detail! I have one too and it's vert light, bit like a drain pipe! Whilst the depth of field will be the equivalent of an f15 lens, the lens will still get the same amount of light, so the viewfinder shouldn't be any darker.
Mine looks like Luis':
http://forum.mflenses.com/early-tamron-400-7-5-t-mount-lots-of-zoo-pictures-t17229.html _________________ Graham - Moderator
Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
See my Flickr photos at http://www.flickr.com/photos/manualfocus-g |
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KarelDH
Joined: 24 Mar 2011 Posts: 169 Location: Belgium
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Posted: Fri May 06, 2011 11:45 am Post subject: |
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KarelDH wrote:
wow, luisalegria picture's are great !
( mine is not in so a great state ).
i think il take this one for a walk once in a wile.
^^ |
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Himself
Joined: 01 Mar 2007 Posts: 3245 Location: Montreal
Expire: 2013-05-30
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Posted: Fri May 06, 2011 1:38 pm Post subject: |
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Himself wrote:
KarelDH wrote: |
Um, you multiply the f value ?.
i only thought u needed to multiply the mm, or am i wrong about this ?
karel |
You`re right.
It would be a 800/7.5.
Still, you need at least 1/800 shutter speed. _________________ Moderator Himself |
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