Recent content by Planapo

I bought a 90mm f2 lens for a song because it has a 2mm diameter chip in the centre of the front element. Chip area =r² i.e. 3.14 x 1²= 3.14mm². Actual front element area = 3.14 x 23² = 1662mm² . As a % of the total area at full aperture, the chip occupies less than 0.2% of total surface area...

For portraiture on location, good lighting is as important as the camera/lens combination. A proficient photographer could likely produce a superb portrait using your 450D. Consider a simple lighting accessory e.g. Lastolite reflector(s) and a stand(s) /support (s) to use on location with...

Yes, will add images when recovered from respiratory bug. Best wishes dunk

Also plan to use it with 800mm f8 Samyang mirror lens which with a 1.6 crop factor EOS 550D will result in effective focal length of 800 x 1.26 x 1.6 = 1612mm . Combination requires very secure tripod & head and 'self-timer' use to prevent camera shake. Note 'stiff foam' wedge focusing...

No plans to sell it; more interested in using the converter to ascertain performance and whether might be a viable tele-extender for use with mirrorless cameras e.g. my Leica T … for which have an EOS to TL/SL adapter. dunk

Just acquired a very scarce CANON LENS CONVERTER FD-EOS. I have an adapted M42 Hanimar (Tokina) 300/5 lens to try with the converter and a friend has a Canon FD 200/2.8. As soon as we have time to test the converter will use with EOS FF digital and Sony FF mirrorless cameras (with, and without...