[bertwert]

@normhead may be able to help with images.

The Pentax 1.4x TC will allow full function and keep WR even though it is a tad expensive.

Thanks to all of you for helping me with this. I will go for the 1.4 Pentax, It should provide the extra reach I need, and perhaps be easy to see in the viewfinder. You all made good points and provided information I was totally unaware of. This forum rocks. Now if the birds would return I would be out having some fun. but for some reason we are missing most of the seasonal nesters at the Rookery and no one knows why.
But I am going to post some recent bird pics in the " birding" section and post the absence question there as well.
Thank you all again, Much useful info

Dewolf

[Scorpio71GR]

I have heard great things about the 60-250. That was on my short list when choosing the 300. I realize now a 450mm might have been a better choice lol. But I am happy with the sharpness of the 300. Your image with the 1.7 is beautifully sharp, more so than I would have imagined for having a TC on it.

Thank you the DA*60-250 is my Specail lens. I did want the 300 but I came across a used 60-250 in mint condition for less than half new. Too difficult too pass up.

This is the 60-250 with my Tamron 1.4TC wide open at f5.6. Someday I hope I can the Pentax TC.

Thank you the DA*60-250 is my Specail lens. I did want the 300 but I came across a used 60-250 in mint condition for less than half new. Too difficult too pass up.

This is the 60-250 with my Tamron 1.4TC wide open at f5.6. Someday I hope I can the Pentax TC.

beautiful pic mate, in fact all yours are quite impressive .
I want the Pentax TC for the WR rating. Florida has a way of pissing on yer cornflakes when you least expect it

[normhead]

I can deduce from the unfinished post when I open the thread, I never finished my post.

With small fast moving birds, the 1.7 is often too much work with the prefocus. I prefer the 1.4. But the 1.7x is great for extending your range. I do prefer it on a 2.8 lens. Also if you're working in an area near a feeder and can preselect a spot where the birds will land, the 1.7x acts as a focus limiter and is extremely quick locking focus. I use them both extensively, depending on the type of image I'm after that day. I don't use either much with the 60-250, just because you lose so much range to focus breathing, on the 60-250, I prefer the DA*200 2.8.

DA* 200 2.8 and HD DA 1.4 TC
DA-star-200-and-1_4-TC-4-280mm Slideshow by Norm_Head | Photobucket

DA* 200 and F 1.7x AF adapter.
DA-star-200-plus-1_7x-AF-adapter Slideshow by Norm_Head | Photobucket

People say a TC doesn't improve your image, I strongly disagree. It might be true with a bad lens, I have shown that it makes no difference at all to my Vivitar M135 ƒ2.8, it just makes a bad image bigger, but on my DA* and Tamron SP glass, I doubt people can tell the difference, as to whether a TC is used or not.