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Hi Barry, I can abtain perfect balance with my Pentax DA*300/4 on my Wimberly gimbal. One thng a lot of folks don't realize is not only do you need to move the lens back or forth to obtain balance...

Hi Nic, I have no idea about that lens. I know that if I wanted it I would not pay the BIN price, I would just make an offer and see what happens. It appears that the lens weighs 7 pounds (3175...

Hi folks, FWIW: I just noticed that there is a Sigma 500mm F4.5 APO Manual Focus K mount lens on ebay that has 1d 13h left. It is listed as Buy it Now or Best Offer. Perhaps a reasonable offer...

MightyMike and Greyser shoot handheld at the BIF's with the Sigma 500mm f4.5 lens. I can do it but not for very long at a time. Myself, I would rather use a Sigma 400mm f5.6 Tele-macro or...

Hi Rod, I have a couple of the Promaster Spectrum 7 1.7X PZ_Af teleconverters. I tested my teleconverters using my K-5 + Sigma 500mm f4.5 on a heavy tripod and Wimberly Gimbal. The target was about...

Hi folks, Are you looking for reach? I am not going to show any of my test images but I suggest you try some stacked teleconverters using CDAF (I was using a Pentax K-01). I think you will be...

That is very, very interesting. Catching those fast birds in flight is almost impossible and by golly you've done it. I applaud your thinking Jan. Might be worth experimenting with other lenses...

Try this: Find a Pentax retailer. Just enter Interchangeable Lens in the drop down menu and enter the zip code. Hope it works for you. Cheers. Ron

Hi John, I am 70 and right now I have all of the Pentax mount glass that I will ever need. I just bought a K-5 II, that along with my current K-5 will hold me over until I see where Ricoh/Pentax is...

Hi Pete, IMO the DA*300/4 + Tamron-F 1.4X Pz_AF or Kenk0 1.5X Pz_AF produces the better images, less CA's and just as sharp as the FA*400/5.6. However, autofocusing with that combination is a real...

Thanks Roger. I'll give that a try. Cheers. Ron

Very good IMO. Crop that first one just a little bit for composition, print it out, and hang it on your wall. Cheers. Ron

Hi Falthap, I've also watched the very young rams practice their buting. Sometimes it is hilarious. I can never seem to be able to get a sharp image of the butting though I keep trying. Cheers. Ron

Phil, FWIW: I am only talking about the new Sigma 18-250mm DC Macro HSM lens that was just released recently for use on the K-01. My Sigma 50-500mm APO HSM OS does not work worth a damn on the...

Hi Rod, Just think...if I were looking for an FA*400/5.6 then that one would have been mine just a few minutes after it was listed. BTW: The one I bought a couple of years ago I bought 5 minutes...

For those that are interested, a Pentax FA*400mm f5.6 was just now listed on ebay.com Cheers. Ron

Phil, FWIW: I bought the new Sigma 18-250mm F3.5-6.3 DC Macro HSM for Pentax and so far it is working great at 250mm for subjects at all distances. I currently recommend this lens over the Tamron...

Hi Phil, I don't have the Tamron 18-250mm anymore but I have noticed some of my other lenses have problems with the K-01 at longer focal lengths. It also seems that the subject distance has...

If the "A" pin on either the body or the lens is not making contact then you will read F__ on the display but the camera will still autofocus. Since you wrote that you don't have a problem with...