Thanks everyone for taking a look and for your fun comments. Something I had never seen before for sure.

Was photographing her at Lynx Lake in Prescott. She came up from a dive all frantic ... short flights, swimming in circles and diving. I guess it let go. I didn't notice it until I got home. Didn't know cray fish were in their diet.

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Same thing happened to mine when I got home from Thanksgiving. Could not adjust using usual methods. Finally found that the graphics card adapter was updated on 11/25. Rolled back to previous version and all is well.
Dale

Thank you all for taking the time to look. Fun digging around in the old stuff, but I have to admit that I don't miss those hours in the darkroom.

Dale

LOL .... "Jungle Gym" .... could not remember that name, Thanks!!

Dale

I've been going through my 'pre-digital' storage closet and came across these. Haven't found the negatives yet (these were scanned from prints I had made). I'm guessing late 1970s with an Olympus OM-1 and a 400 speed Ilford film. Most with a 50mm and, perhaps, a 135mm Olympus lens (still have them all). The last was in Boston, all of the others in Central Park NY.

Climbing

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Walking By

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Playground

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Going Home

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People Watching

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What Did I Step In

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On The Steps

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Copley Condom

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I agree, OAT is excellent particularly the small groups. Went to SE Asia and Peru with them. BUT, they are not a photography specific company. I would probably use them for Africa but not if photography was my main purpose. Great company!

Thanks everyone, appreciate you taking a look.

Dale

Was bicycle riding across Iowa last week (RAGBRAI) and saw this barn. Love old barns!

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Thanks, appreciate the clarification!

Dale

I remain baffled by bozos in this group. WTF!! What, in my question gave you the idea that I wanted to buy lens' to improve my photography. And what in that message encourages you to tell me to take photography courses and to "Start taking pictures and quit worrying about what new zoom lens to purchase." You know nothing about me or my photography skills, etc. All I was looking for was a term for a "phenomenon" ... zoom lens' that lengthen when zooming and those that don't.

So, before you crawl back in your hole, the answer was internal focus and/or internal zoom. Geeze!!!!!

Thank you all .... mystery solved. My apologies for the word "issue" implying something was wrong. Not an issue, just an observation. Internal focus/internal zoom describes the "observation." I also meant Tokina 24-70 not Tamron and I have determined that it is of the internal focus/internal zoom type (does not change length). Unfortunately the use of the term doesn't seem to be consistent. For example (in B & H) the Nikon 70-200 2.8 is described as having internal focusing and "does not change length." In the description of the Nikon 24-120 4.0 it also says it has internal focusing but it, in fact, does change length when zooming (I have them both).

At any rate, thanks to haroldross, larrepage and robertjerl for the explanations!!

Hi,
Wasn't sure if there is a term that describes this issue. Some like my Nikon 200-500 extend when zooming. Others like my Nikon 70-200 and my 2 Tokinas (12-24 and 20-35) do not. Can't find a term in the lens description that describes that. Was actually wondering about the Tamron 24-70 f2.8. Thanks.

Thanks Linda, always appreciate your insight!

Thanks Alan, ours aren't too skiterish, but the 200-500 Nikon does help!