Eos fd converter

On a pure aesthetic and techinical basis it will i suppose degrade the quality of your L series lens. The adapter with the optics has magnification of 1. Without losing any stops! One other thing the actual 'canon brand' came in to effect and was used to help the transition from fd to eos lenses for pro photographers, in my opinion it is not worth the price. The adapters are generic just go for one with the infinity focus.

The only problems you'll have is speed of focus this depends obviously any extra camera movement at that focal length can be dodge, so thats my bit i hope it helps. I got two generic adapters off eBay: The bad news is that both of them have crummy 2X teleconverters; the good news is that you can unscrew the teleconverters and use the adapters as mm extension tubes for connecting your FD lenses to an EOS body.

This is fairly useless for anything less than mm, but the FD mm f4 with internal focusing does fairly good in close-up work and will focus out to about 15 feet. The "de-opticized" adapters also work for connecting an FD-mount bellows to an EOS body, although you still need to use a lens with manual focusing and aperture setting on the other end. The off-brand ones will cost you a bit of quality with the L, but it may not be noticable.

I've seen some superb results from people using off-brand adaptors. I've also seen some horrid results from off-brand adaptors. Yes, I get good results. Macro only. It has not optics whatsoever, strictly an adapter. I put fd lenses on my fd autobellows and shoot with a 10d and studio flash I bought an adapter to use my dad's fd lenses on my eos body when I first got it. He sold the camera and lenses but I still have tne adapter.

The results were pretty good. Can anyone tell me anything about Bower, particularly about their optic included converter? You must log in or sign up to reply here. High quality machining, well blackened surfaces to minimize reflections and multicoated optics.

The optical assembly is easily unscrewes to convert the adapter into a macro adapter. Overall it seems to be a very well made item. Without the optics the adapter acts as about a 15mm extension tube. With no optics in the adapter, a mm lens could be focused to a maximum distance of approximately 8ft and a mm mirror lens which allowed focus just "past infinity" as many telephoto lenses do could be focused to a maximum distance around 50ft.

Magnification The original Canon adapter acted as a 1. The "test target" was the back of a lawn chair! Actually not a bad target since it contains a lot of both high and low contrast fine detail.

Below is a typical full frame 20D shot. All focusing was done manually by observing the viewfinder image using a 2. From previous testing I know that the focusing via the viewfinder screen in this particular camera is very accurate. It mounts just fine with the lens set to the close focus position, but if the lens is focused towards infinity there is mechanical interference between the adapter and part of the lens which moves backwards as focus is extended.

However you can still us the combination up to a distance of maybe ft. Below are the results with the lens set to f1. Quite clearly the results are f1. Very low contrast, soft images. Not perfect, but contrast stays pretty high. Things improve slightly at f2. Apertures in parentheses are with the adapter attached.

Again it's obvious that there are problems wide open. By f4 things look a lot better and the image is pretty good at f5. The images are quite similar, but the one shot with the Tamron 1.

Genesis mm f5 APO Fluorite telescope This telescope is as good as any mm photographic lens, probably better than most! If uses a fluorite corrector element to minimize chromatic aberrations in a Petzvel lens 4-element configuration. In the center is the image shot using the Tamron 1.

All three images are pretty high quality, showing that with a good telephoto lens at f5 the adapter is capable of yielding good results. Again it's evident that with the lens wide open f4 there is a significant drop in contrast. Things get quite a lot better one stop down at f5. Here are a set of images, also shot at mm, with and without the adapter. Again it's evident that shooting wide open at f4 with the adapter results in loss of contrast.

Things get better with the lens set to f5.