Reptile Forum, Reptile Classifieds - CaptiveBred

SteveL · Posted: Wed Jan 09, 2008 10:08 pm Post subject: Lens help

Tamron AF70 -300 MM F/4-5.6 LDmacro 1:2

Any info on this lense i google but got to much info back Confused

i have one but im a learner so any help appreciated Laughing

I have no idea what uses it has LOL
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Stuart · Posted: Wed Jan 09, 2008 10:59 pm Post subject:

http://www.fredmiranda.com/reviews/showproduct.php?product=254

http://www.epinions.com/content_38649302660
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SteveL · Posted: Wed Jan 09, 2008 11:43 pm Post subject:

Cheers Stu

but what does this mean quote : and use a middle F/stop ????

Quote: its not the fastest but when stopped down particularly between f/8 and f/11

thats hard to understand as a beginner
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Stuart · Posted: Thu Jan 10, 2008 12:54 am Post subject:

No worries it can get confusing Steve...to try and put it simply..the lower the f stop number the higher the shutter speed you will get which means a lens with an aperture of 2.8 will give you faster shutter speeds than a lens at 5.6. This is great if you are trying to shoot sports or moving subjects..but also helps reduce blur on static shots as the shutter opens and shuts much quicker..It does effect your depth of field as you can guess..something shot at 2.8 will have nowhere near as much of the image in focus beyond the focus point than the same shot done at f8 for example..but the shot at f8 will require more light which in turn requires slower shutter speeds or higher iso's..hope this helps a little..have a practice with different apertures(f stops) and hopefully the waffle above will make more sense. Cool

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SteveL · Posted: Thu Jan 10, 2008 1:16 am Post subject:

ile have a go tomorrow if its a clear day .ile nip out with the tripod etc

cheers Wink

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Stuart · Posted: Thu Jan 10, 2008 1:42 am Post subject:

Try a few handheld too mate..you'll get a better feel for what shutter speeds are best for certain situations.
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SteveL · Posted: Thu Jan 10, 2008 2:55 pm Post subject:

Well i tried but its an awful day here rain sleat etc etc

how frustrating is that lol
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Stuart · Posted: Thu Jan 10, 2008 3:00 pm Post subject:

not much better here..wind rain etc..try a few indoors.
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SteveL · Posted: Mon Jan 14, 2008 12:19 am Post subject:

deleted hundreds so far Laughing

this is about the only decentish pic Rolling Eyes

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Stuart · Posted: Mon Jan 14, 2008 12:52 am Post subject:

Would have been nicer to have its head at a more natural angle..maybe facing you or side on perhaps...
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