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Forum: Troubleshooting and Beginner Help
04-25-2009, 08:12 AM
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hello from france
Trap focus with an mf lens is working with pentax dslr
if you put some aluminium paper on the body contacts for the lenses ..do not forget the A contact a bit lower in the bayonnet.Features and Operation of the Ka Mount
this will activate matrix mesure, p-ttl on any k dslr pentax body and if your body is on af single position, you will be able to use av mode + trap focus and it does'nt need lot of light ...i am using the trick with a 400 F5.6 or even with a 600mm refrator f7.5 or tamron reflex 500 F8 for wildlife photo ...you need good quality glass for contrast definition ...all the rest is a peace of cake, 90% of your shots will be right in focus if your speed is fast enought.
if you need important elevation on a good tripod for planes photography consider manfrotto head 501 or 503 or an universal astrononics microstar head
have a look there:
Lunette ORION 80ED montée sur un trepied video Manfrotto + comparatif avec téléobjectifs Canon 100/400 IS L et MTO 11-CA 100/1000
enjoy
Patrick
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