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...

It's not that difficult .. all you need is a decent copy stand, bellows and a 6 element enlarging lens ...plus the adaptors to attach to your camera. The whole lot is cheaper than eg a marque AF macro lens. Window lighting would suffice if used with eg polystyrene reflectors (scrap packaging...

There is no reason why an FD macro lens should not give as good results as eg a dedicated AF macro lens provided it is used with care and without the correction lens in the adaptor. Most of my macro work is done with old enlarging lenses and also Nikon and Canon manual focus macro lenses via...

Extension tubes will enable a greater magnification but you must use dedicated tubes eg Canon or Kenko to maintain TTL metering and AF . There are cheap tubes available which have no electronic connections and these require manual focus and manual exposure using the camera's exposure index scale...

... and a few more ... In some of the photos the reflection of the ringlight is visible in the jewels and the polished screw head. The edge blur and flare in the last photo is caused by reflections from the side of the watch case. The watch case back is a 'display back' ie a...

Camera used was a Canon 450D. Lens was a Rodenstock 50/2.8 6 element enlarging lens with stepping ring and Nikon adaptor plus: (a) Nikon extension tubes for low magnification & (b) Nikon PB5 bellows for high magnification ... also using a Nikon to Canon EOS body adaptor. Subject Illumination...