lens swapping with EOS system

[UFObuster]

I noticed that the EOS 300D (digital Rebel) is sold as a body only (lenses optional) unless you buy the pricier kits.

I have the old EOS Rebel film cam with several EOS AF lenses. Do the old lenses work (w/filters, etc.)?
If so, any problems I should know about?

(also shoot with a G3)

Roger

[defordphoto]

All EOS lenses will work with the 300D. That lens that comes in the kit is actually a pretty darn nice lens and worth the extra $100, IMO.

[scottbergerphoto]

All Canon EF lenses will work.
Scott

[UFObuster]

..thanks, Jim, Scott..
..I thought so, but I'm just beginning to nail down details leading to a purchase.

[Jim_T]

Yes.. as RFMSports says. EOS EF mount lenses fit the whole EOS line..

One thing you should consider is the 1.6 crop caused by the sensor being smaller than a full 35mm frame. This makes wide angle lenses less wide..

A 28mm EF lens appears to be 28 x 1.6 = 44mm on the D-Rebel.

If you're in to landscapes and such, you'll probably find you need to buy a wider lens to make up for this.. The Rebel kit lens gives you 18mm (28.8mm effective) at the wide end for only 100 bucks..

Lenses in the 18mm range cost considerably more than 100 bucks.

[UFObuster]

..again...good info.
does that mean that my old 80-200mm zoom would go on out to 1.6x 200 (320mm)? Is this affecting (reducing) the f/stop range of the lens (lens speed) also?

Roger

[Canuck]

Jim_t wrote:
Yes.. as RFMSports says. EOS EF mount lenses fit the whole EOS line..

One thing you should consider is the 1.6 crop caused by the sensor being smaller than a full 35mm frame. This makes wide angle lenses less wide..

A 28mm EF lens appears to be 28 x 1.6 = 44mm on the D-Rebel.

If you're in to landscapes and such, you'll probably find you need to buy a wider lens to make up for this.. The Rebel kit lens gives you 18mm (28.8mm effective) at the wide end for only 100 bucks..

Lenses in the 18mm range cost considerably more than 100 bucks.




In regards to this I would like to add this topic:
http://www.photography-on-the.net/forum/showthread.php?t=22219
There is the CPS (Canon Pro Services website where you can download the image on that one.

[defordphoto]

And here's a handy-dandy chart for ya:


http://racefamily.racinglines.com/MiscPhotos/EOS%20Conversion%20Chart.JPG


And you can download a flash version of that at: http://www.cps.canon-europe.com/articles/article.jsp?article.pageId=6510

[defordphoto]

LOL! GMTA, Canuck!

[UFObuster]

thanks for chart...makes sense.
One last question. I note that f/stop also goes up but how much?.
Does f/stop go up by factor of 1.6 also?

(I followed Canucks link....couldn't quite get the "2xTC mm" bit as it related to f/stop but I didn't follow the whole link)

[defordphoto]

UFObuster wrote:
thanks for chart...makes sense.
One last question. I note that f/stop also goes up but how much?.
Does f/stop go up by factor of 1.6 also?

(I followed Canucks link....couldn't quite get the "2xTC mm" bit as it related to f/stop but I didn't follow the whole link)

No the f-stop does not go up with the 1.6 sensor. The f-stop only goes up if you use the 1.4 or 2.0 teleconverters.

[UFObuster]

....doesn't go up?...you're kidding!

You mean that I can use my old 80-200mm zoom on a 300d....get a bonus conversion to 128-320mm and not even loose an f/stop??

Wow, if I'm reading you right....that's quite a plus.

[Belmondo]

Once you get the concept, you'll realize that you're really not getting any magnifiction, but you're cropping the image to create effective magnification. There are numerous previous threads in this forum that deal with the 'crop factor.'

Anyway, it doesn't affect the light-gathering capabilities of your lens.

Tom

[UFObuster]

thanks, Tom
Already working on those threads....
Happy New Year all...

R

[Jesper]

You have just discovered the DSLR Magnification Factor. Have a look at this:

Understanding the DSLR Magnification Factor (http://www.luminous-landscape.com/tutorials/understanding-series/dslr-mag.shtml)

Have fun with your new camera!

[defordphoto]

Good find Jesper.

[where1]

UFObuster,
I have been using my wifes 80-200mm lense from her Rebel camera and it works fine. Just a different color dot witch means you start out your rotational lock on to the body at a different spot. It is easy. The 18-55mm lense from the DRebel kit won't attach to the film Rebel body though. Darn, I wanted those super wide shots from that lense on her film.

[grahamtriggs]

Jesper wrote:
You have just discovered the DSLR Magnification Factor. Have a look at this:

Understanding the DSLR Magnification Factor (http://www.luminous-landscape.com/tutorials/understanding-series/dslr-mag.shtml)

Have fun with your new camera!


Interesting article. However, there seems to be a lot of 'ifs' in there (ie. XXX is unimportant 'if'), that actually seems to negate things that in reality do make a difference because the 'ifs' aren't necessarily true.

Take the resolution for a given sensor size - at what point to do you really start hitting diminishing returns? The sensor in a 300D is 6MP and 22.7x15.1mm. If you had a 36x24mm sensor that was also 6MP instead, and used a 1.6X longer focal length, what difference would you actually see in the resultant 6MP image? If the images are indistinguishable then for all practical purposes you have a focal multiplier - even if technically that isn't a correct explanation.