Originally posted by crewl1 These are the types of discussions we have in the reach thread.

Personally, I find assistive devices including a red dot scope for targeting and a loupe for focusing on the magnified image along with a steady tripod very helpful.

I use a 300mm lens primarily and still find it a challenge, I can only imagine what a 560mm scope must bring since now you are shooting at 3080mm effective focal length.

Using the Q with long lenses takes time and a methodical approach.

Active subjects that only stay in one spot for a few seconds is an exercise in frustration, so I stick to static objects or those with focused activity, say feeding or at a nest.

When it all comes together the results can be very satisfying.

OK ordered it with the T mount and K mount (with aperture control) adapters.

I have a lot of reservations about it but for the price of a kit lens why not see what it can do.

I like to think in terms of magnification not FL so I did some calculations:

Assuming that for any given sensor the "normal" FL (neither wide nor tele - a magnification factor of one) for that sensor would be the diagonal of that sensor - In the case of the Q - 7.66mm.

Thus FL/7.66=magnification factor.

So given that I came up with the following at prime focus:

1000mm = 130x (APS-C 36x)

560mm = 73x (APS-C 20x)

500mm = 65x (APS-C 18x)

300mm = 39x

200mm = 26x

100mm = 13x

50mm = 6.5x

35mm = 4.57x

18mm = 2.35x

I have all these FLs so I should be able to find something that works.

BTW under actual use I have found the 1000mm with the K5 at 36x, about ideal for small birds but of course impractical for field use.

So maybe with the Q and about a 275mm glass I should be good to go.

Time will tell and in any case it should be fun just fussing about with the Q.

Thanks everyone for the help it's been very useful.

Wildman

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Last edited by wildman; 09-25-2014 at 05:56 AM.
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