Computar Dl 4.5/80mm

sure ray will do. as soon as I can. if you like the results I will send the lens to you. its pretty sharp when I check the focus in magnification its sharp. ray I will do the test with the new canon camera. I still don't have the canon camera set. there is a lot to this new camera. I am learning it thou. ok I will do this a little later

http://www.photocornucopia.com/imag...2_1000wm.jpg
here is the sheet on the 80mm lens

I just checked the computar 105 mm under the microscope. it has fungus on all the elements front plus rear. I have not received the 65mm yet same seller. so I imagine same problem. I won a 135mm computar so cheap. if it has fungus I will tear it apart clean and fix it. these other 3 I payed a lot for these. these lens are very hard to come buy. has any body here ever dismantled a computer lens. any suggestion would be greatly appreciated. I completely dismantled a Olympus 80mm 1:4 cleaned it greased it. reassemble it and it works perfectly. I will check the 65 mm it will be here next week

ray hope you read this. I completely dismantled the 105. cleaned all that I could. the rear element. is made up of 3 elements glass the inner next to the aperture separates by a spacer. the out one is made up of 2 elements there is fungus between those elements. just a little tiny bit. ray one time there was a thread. you was showing this group from another forum. you work with macro photography. they was amazed at what you was doing with the pennies. these guys shoot bugs and stuff. after you stopped posting. one of the other member continued adding stuff to that thread. he showed how to rebuild a Rodenstock rodagon 75mm D. he had altered other enlarger lens. my question can you remember that thread. what I would like to know is if fungus can go in between that rear outer element can I separate that lens glass or is that glued. with balsam. if I could find that thread. I would joint that forum to chat with that gentleman. that gentleman is really good at tinkering with lens he is very knowledgeable. about micro macro photography. I know you have done a lot but this would really help. if we can not find that I will maybe tear the 135 computar apart and separate the glass element. ray this lens would fix in your elcheapo thread

just a heads up if you are thinking about purchasing a computar lens. they are prone to fungus. the fungus grows in between the glass of the doublet lens. there is no way to get at this fungus. once the lens has it you can not clean it. so before buying make sure you know what your bidding on or purchasing. have a great one.

thanks ray I have found a fix for the lens. as soon as the 65mm gets here I will check it . if there is fungus I will ship all the lens to that company. to be repaired. ray if I can find that thread I will bring it here. post it I will do some digging this evening. I will start looking for it. have a great one

I purchased a total of 5 computar lens. I am still waiting for one a 65mm. the 4 lens I have 2 has fungus issues. 2 has cement issues. I would imagine the 5 one will be the same. I am not sure yet the total cost to get these repaired. I don't know if these computar enlarger lens are worth even purchasing. there are cheaper and better lens out there. if these are the issues this glass has. when I get the total for the repairing them I will post. if is to much. I will make door stops out of them.