[Q]: Pentax lenses on the Canon 5D?

Actually I took a short cut. I used Takumar 50 mm 1.4 screw mount.

The screw mount-EOS are easy to find and cheap however EOS to FA adapter was not cheap.

Couple things to consider using Takumar screw mount with EOS adapter

Focus at infinity - not a problem but depends on the adapter the mirror can be stuck around the infinity range - this can be esily solved by using a spacer (sheet of doughnet shape paper) between adapter and Takumar. I did it and still have ability to focus infinity

Actual focus - bright view finder of 5D helps but unlike Pentax, Canon does not give you the focus confirmation light.

Other than that it works fine





--
http://www.pbase.com/jinwoo

Nice pictures, and very cute kid.

-Pasvorn
--

Jonas B said:

Lately I have been playing woth the thought of buying a Canon 5D
instead of going the K10D route. I figured that if the camera will
get bigger and heavier, then why not add a few grams and get a
sensor more than double the size compared to our APS-C sensors?
It's an expensive luxuary and I'm not done thinking about it. If I
stretch economics I might afford the 5D and the coming EF50/1.2L
lens. That would keep me busy for quite some time.

Then I'll also need something wider and something longer. Will my
Pentax lenses fit? I'm mainly thinking of the FA31 and the FA77. It
seems as there would be no problems with the smaller sensor, like
in the 20-30D and 300-400D. For the 5D I have read that one may
have to remove the aperture lever.

Click to expand...

Yes, you have to remove (cut or grind), otherwise, the mirror will hit the lever or lever guide.

Is there anyone here with any

Jonas B said:

experience or knowledge? I know we have a few "dual system" people
here (but I know it would be more natural to ask in the Canon lens
forum) and maybe somebody knows something about this?

thank you,

Jonas

Click to expand...

--
http://www.pbase.com/jinwoo

Might want to check this out

http://cgi.ebay.com/Adapter-to-mount-PENTAX-K-lenses-on-CANON-EOS_W0QQitemZ7564845509QQcategoryZ30059QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

can't tell you if works or not however. currently it doesn't look like the seller has any listed, I'm sure if you contact him he can hook you up with one.

Jonas B said:

Lately I have been playing woth the thought of buying a Canon 5D
instead of going the K10D route. I figured that if the camera will
get bigger and heavier, then why not add a few grams and get a
sensor more than double the size compared to our APS-C sensors?
It's an expensive luxuary and I'm not done thinking about it. If I
stretch economics I might afford the 5D and the coming EF50/1.2L
lens. That would keep me busy for quite some time.

Then I'll also need something wider and something longer. Will my
Pentax lenses fit? I'm mainly thinking of the FA31 and the FA77. It
seems as there would be no problems with the smaller sensor, like
in the 20-30D and 300-400D. For the 5D I have read that one may
have to remove the aperture lever. Is there anyone here with any
experience or knowledge? I know we have a few "dual system" people
here (but I know it would be more natural to ask in the Canon lens
forum) and maybe somebody knows something about this?

thank you,

Jonas

Click to expand...

--



Kristian Farren
http://kf3.net

Jonas B said:

Now is the first time I actually see this image quality being within
reach for an amateur (at least to an amateur ready to give up
Laphroig for a year or so).
regards,
Jonas

Click to expand...

NOooooo! Don't give up the Laphroig! You know you'll regret it, and you can't cheat by switching to another Islay! ;O)

I can understand why the thought has occured though.
Cheers!
Trevor.

Jonas B said:

"Patiently waiting... Patiently waiting"
I'm not surprised others also have given it a thought. It's often
like that. People just don't know it, but they are often in company.
And I really wished it was possible to get the 5D for the price you
can obtain it in the US. Here in Sweden it seems to be a deal at
around USD 3,300 and that is after the Canon rebate that expires in
the beginning of next week. No 600 dolares Dell rebates here... or
even the same low starting price.
I would have to shell out with a lot more money. (Maybe I should by
myself a weekend vacation in N.Y. and buy it. Also without rebate
it would be cheaper and I have never been to NY, so...)

The kit you describe to that price... well, if the K10D is USD900
or so, then I don't see the problem. At least not with regards to
money.

Seize the light!

Jonas

Click to expand...

We've had discussions about the 5D before Jonas!! I've considered the switch a lot in the last couple of months too, because I've really hit the limitations of a 6mp DS in enlarging photos for exhibition.

I've also looked at taking the 31LE over with me, but I don't use WA enough to make it worthwhile.

Several things have convinced me to remain with Pentax for the moment:

• 12.8MP isn't as big a difference over 10.2mp as 10.2 is over 6mp.

• Consider how much you would use your cam in low light and where you would use it. I don't see myself taking a £1500 camera to the pub with me! If I upgrade to the K10D then the DS becomes my 'beater' camera if I need to use digital, although I'd rather stick a roll of pushed b&w in a film camera.

Then again if I sell a lot of photos in the run up to Xmas there's no doubt I'll be thinking about it all over again!

Martin.

Available from Kindai in Japan:

http://www.kindai-inc.co.jp/mount_p645.htm

And of course you could use Pentax's own P67 - P645 adaptor ontop of that to get P67 lenses to fit. I've considered that at times...

-gt

Hi Jim,

Yes, I'm thinking long and hard. Or rather, I'm mainly playing with ideas. My resources are far from unlimited and as a pure amateur I have no income from photography. In a way, what I really should do, is to buy a new printer! But I decided to stick to the R800, which serves me very well, and instead buy a new camera. So, the old idea about going FF once again popped up. That has very little to do with what I need. As I said in an earlier post I think half of my pictures could as well have been taken with a P&S... This is about desire and old dreams.

The 645D will be way beyond what I can pay. It will also be too big. A FF 5D seems to fit pretty well.

But hey, no waving good-bye. This is a long process and I guess it just starts with me not buying the K10D. I'll keep thinking instead. I know I'll get a little jealous on all of you upgrading...

Thank you for the nice words! I would surely keep the DS, together with a DA21it would make a nice camera possible to bring anytime.

Jonas

Jim King said:

Hi Jonas!
I hope that you think long and hard about your photographic needs
before making a jump to another system. It's important to separate
"needs" from "wants" when it comes to photo gear - I know this all
too well from personal experience - but you tend to think things
through, and I'm confident that you will come to the right decision
for you . It's too bad that you feel Pentax does not have a
solution which works for you - I would have thought that the 645D
along with an APS-C body would be the perfect solution - but
perhaps you can't wait for it to appear or feel that it will be too
expensive.

I also join in the chorus saying that we would hate to see you
leave this forum. If you decide to switch to Canan please remember
your friends here and come back for a visit now and then. Or do as
Dave Lewis has done, and keep both Pentax and Canon systems so you
can continue to share your thoughts with us regularly.

Click to expand...

Pasvorn said:

Nice pictures, and very cute kid.

Click to expand...

I second that. And I'm for the first time looking at a 5D picture taken with a Pentax lens. Now it is small and for the web only, but I see no obvious flaws, which in turn means that the FA31 and the FA77 would serve just fine. No surprise though. Some vignetting and maybe not optimal sharpness in the corners, that I can easily live with.

thanks for posting Jinwoo!

--
Jonas

It's mostly a waste of time and money, and a bit of butchery to a couple of fine lenses.

To fit Pentax K-bayonet lenses onto a Canon 5D, you'll need to remove the iris actuation lever inside the lens (because it can smack into the mirror...), and then a mount adapter of some sort must be acquired. I know someone makes them as custom bits, but it's not an easy adaptation. Then, of course, you're working will a manual focus, stop down only for metering and exposure setup. The other route is to nab a Canon lens mount off some other lens and modify the Pentax lens to fit it. Again, not for the faint of heart.

I know one person who has done this: converted two of his favorite Pentax A series lenses (15mm and 85mm, I believe) for a Canon 1D II. He's quite happy with his work, but says it isn't worth it. He has since acquired a kit of all top of the line Canon lenses, suitable for his work.

My opinion:

If you want a Canon 5D, buy one and buy the top-notch Canon lenses for it. Enjoy it. Otherwise, better to just wait for the K10D and be happy.

I just sold the last two of my Canon lenses yesterday (the excellent EF50/1.4 USM and EF28/1.8 USM) as I don't plan to be going back that way.

G

Martin jumped right in:

joemeek said:

We've had discussions about the 5D before Jonas!! I've considered
the switch a lot in the last couple of months too, because I've
really hit the limitations of a 6mp DS in enlarging photos for
exhibition.

I've also looked at taking the 31LE over with me, but I don't use
WA enough to make it worthwhile.

Several things have convinced me to remain with Pentax for the moment:

• 12.8MP isn't as big a difference over 10.2mp as 10.2 is over 6mp.

• Consider how much you would use your cam in low light and where

you would use it. I don't see myself taking a £1500 camera to the
pub with me! If I upgrade to the K10D then the DS becomes my
'beater' camera if I need to use digital, although I'd rather stick
a roll of pushed b&w in a film camera.

Then again if I sell a lot of photos in the run up to Xmas there's
no doubt I'll be thinking about it all over again!

Click to expand...

Hi Martin,
Lot of water and all that. I hope everything is allright with you.

No, I won't take a £1500 camera to the pub. I'll leave the £1700 camera at home and bring the DS with the DA40/2.8 instead.

Well, I hope you sell a bunch of your pictures. This is a long process and maybe we can take up the discussion again later!

all the best to you,

Jonas

Jinwoo, kristian, greentoe

Thank you for helping. I think all that is covered. If you see some poor guy selling a 5D cheap, let me know...

regards, and good light all!

Jonas

I’m sure the Pentax lenses can be modified and good pictures can be achieved. The 5D has a lot more going for it than just full frame like fast, accurate, silent auto focus. Another thing to consider is the field of view you like on your crop factor body is going to be different on full frame. If you really like the field of view of the 77mm you might find the 135 f2L more to your likening.

Happy shooting
Bob

Jonas B said:

frank said:

Hmm, I don't know about using Pentax lenses on Canon 5D, but it'll
be a great loss to our Pentax forum if you dump all your Pentax
gear and move to Canon ...

Hope you'd stay even after you get a Canon 5D, a great camera by
all reviews.

BTW, Jonas, I sent you an email this morming for another favor ...

Click to expand...

Thank you Frank. Lol - I know not all look at it that way. Your
mail is in process, I have to contemplate it for a day or so. The
whole FF thing is also slowly coming to me, it's not like I am
leaving this week. Ha.

best regards,

Jonas

Click to expand...

Thanks Jonas. Hope you won't contemplate for too long ;-) Waiting for the good news from you then ...

Cheers,
--
Frank
GMT+8hours

I have been having the same thoughts, but unless the 10D is really bad, and I don't see that, it would be a bad decision. The 10D is very inexpensive, which leaves room for whatever is new in a year or two, and there will be something new and better, always. The 5D is overkill for a "toad" shooter like me, but it might be just the thing for someone with your experience. Since I have no other expenses like house payments, car payments, or other debt, it is not a matter of dollars but of value for those dollars. I still work hard and don't waste much and a 5D would be a waste with my current skill level. Besides, I would have to give my wife a matching amount and the 10D eases that pain....a little.
--
'This is more serious than I thought.....but it is still fun!
http://www.pbase.com/rupertdog Take a look- It's Free!

I have also been considering a 5D to use with my M42 lenses. I like the nice bright viewfinder and having a full frame sensor.
Douglas Film

Jonas B said:

Lately I have been playing woth the thought of buying a Canon 5D
instead of going the K10D route.

Click to expand...

IF the quality of the 5D truly is better, well, nobody can blame you. I guess.... Sort of... Maybe

But what does surprise me is that you are willing to go down the road so many have taken, so... mainstream... so... common... so...following the rage... so... unlike Jonas....

--
janneman
http://www.pbase.com/jl2

Hi, Jonas.

I don't know much about using Pentax lenses on a eos camera, so I can't help you there. But 5d has been discussed on a lot of forums, also on foto.no or foto.se. I am sure you have read a lot of this. The conclusion seems to be that 5d demands quite a lot of the lenses. You have to use the very best Canon L lenses to get top results and this can be expensive. The most important advantage with aps-c is that only the better part of the lenses is used. With 5d you have to start worry about corner softness again, I suppose

But I have to agree that 5d is a very nice camera, but I suspect you are going to wait for K10D before you decide anything?

janneman02 said:

Jonas B said:

Lately I have been playing woth the thought of buying a Canon 5D
instead of going the K10D route.

Click to expand...

IF the quality of the 5D truly is better, well, nobody can blame
you. I guess.... Sort of... Maybe

Click to expand...

Meaning you are in doubt about the picture quality from the 5D? Now you surprise me.

janneman02 said:

But what does surprise me is that you are willing to go down the
road so many have taken, so... mainstream... so... common...
so...following the rage... so... unlike Jonas....

Click to expand...

Why is that? I would say that my hallmarks are common sense and wisdom. Besides of being a gentleman of course.



--
Jonas

Jonas B said:

janneman02 said:

Jonas B said:

Lately I have been playing woth the thought of buying a Canon 5D
instead of going the K10D route.

Click to expand...

IF the quality of the 5D truly is better, well, nobody can blame
you. I guess.... Sort of... Maybe

Click to expand...

Meaning you are in doubt about the picture quality from the 5D? Now
you surprise me.

Click to expand...

Nope, I am not in doubt about the quality....

I am in doubt whether that might a a good enough reason to go the Dark Way . It is a reason, sure, but good enough :-DD

Jonas B said:

Jonas B said:

But what does surprise me is that you are willing to go down the
road so many have taken, so... mainstream... so... common...
so...following the rage... so... unlike Jonas....

Click to expand...

Why is that? I would say that my hallmarks are common sense and
wisdom.

Click to expand...

Says who? :-D

Jonas B said:

Besides of being a gentleman of course.

Click to expand...

Ofcourse

Jonas B said:

Click to expand...

--
janneman
http://www.pbase.com/jl2