Folks I need your help - please read explanation and request!
I am in China and may have the opportunity to visit a museum later in the week. Some of my photo gear was packed in the checked baggage and I am concerned that it *may* have suffered shock damage - not on the flight but during the taxi ride later (roads are very rough). The lens was well packed, but... The particular lens in question is the old EF 28-70 f3.5/4.5 Mk2 - it's not an 'L' lens but it is really quite good - or at least was. The possible problem is with the aperture diaphragm. When the lens is not powered (i.e. disconnected from the camera or the camera indicates 'wide-open' f3.5 or 4.5 depending on focal length) I would expect the petals of the diaphragm to be fully retracted and not visible. This is certainly the case with the other two lenses that I have with me. This is not the case with my 28-70 - rather, in the above state I can see the petals (a little bit) and I'm not sure that this is normal. Apart from this the lens 'seems' to function as you would expect - it focuses, the diaphragm opens/closes when CF11 on my EOS10 (depth of view preview) is selected, I hold down the partial metering button and adjust the aperture in Av mode. It's just that I don't remember seeing the petals before - not that I have really ever looked. But the sight of them struck me as 'unusual'. Request. Would some kind soul please take a look at their example of this particular lens and let me know what they see with regard to the diaphragm. Does anyone maybe know of a simple test to verify, or give greater confidence of, correct operation (short of getting films developed). MTIA Steve * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
