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

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Jonas B said:
I don't like the 50/1.4 that much, I'll rather have a good look at
the reports about the EF50/1.2L when it materializes. Then maybe
the 28/1.8 and the 100/2
Click to expand...
I'm curious: what don't you like about the 50/1.4? It's an excellent lens, its rendering qualities are very very close to the Pentax FA50/1.4.



© 2003 by Godfrey DiGiorgi
Canon 10D+50/1.4



© 2003 by Godfrey DiGiorgi
Canon 10D+50/1.4
Jonas B said:
The 35/1.4L is interesting. From the samples I have seen it seems
to performe similar to what the FA31 does. But bigger and heavier
and faster, and with better AF. Do you have personal experience
from this lens, and/or the EF35/2?
Click to expand...
I tested the 35/2 against the 28/1.8 on the 10D body. The 28/1.8 has better rendering qualities, the 35/2 is sharper wide open, has noisy and slow focus. It's so small and light it would be a bit unbalanced on something the size of a 5D body, imo; I chose the 28/1.8 and was quite satisfied with it for the 10D.

The 28/1.8 is reputed to be a little soft at edges and corners wide open on 26x36mm. The 35/1.4L is reputed to be superb but you'll pay for the pleasure in both price and buik.

The 135/2L is indeed superb. I wanted that one but moved to Pentax before I sprung for it.

Godfrey
 
Yes but unfortunately we have both been really busy since!! I can tell you there is very little in it, but I like the bokeh better on the 77 and of course its faster!! I dont think the resolution difference is measurable.
Jonas B said:
BTW Steve, what happened with your and Richard's 70/77mm
comparision? Did you have a chance to meet and take those
comparision pictures?

--
Jonas
Click to expand...
--
Steve
Measurebating makes you short sighted.
http://www.pbase.com/steve_jacob
 
Stig Vidar Hovland said:
Sorry, but this link to an interesting post in a norwegian photo
forum. I suppose you have to be norwegian, danish or Jonas
(swedish) to read it.
Click to expand...
Thank you Stig,

Yup, I had no problems reading that. They discuss the noise level with the D80 and the 400D and have some opinions about that, then it also was voiced that the FF cameras are giving the best picture quality and at the same time everybody agreed that the APS-C sensor cameras of today all are better than 35mm-film cameras. What they didn't agree about seemed to be if it is fair to compare the incamera jpeg conversions used by the D200 and Canon 400D.

Interesting in a way but nothing new really. Well, I haven't read up on the Canon 400D as I'm not interested in it, but apart from that there was nothing new. (Or I missed something in the Norwegian text, but I don't think I did.)

regards,

Jonas
 
Godfrey said:
Jonas B said:
I think reversible conversion.
Click to expand...
The K-mount to EOS mount conversions I've seen have not been
reversible.
Click to expand...
I have replied to you above:
http://forums.dpreview.com/forums/read.asp?forum=1036&message=20663432
(Not sure you saw it)

About reversible conversion; the German eBay seller phototools24 sells one of the available adapter rings (there are several manufacturers and sellers, Cameraquest is another but very expensive). I have a pdf I got by mail from Rolf at Phototools24 that describes how you remove the aperture lever without drilling or any other serious surgery. It shows a manual lens getting stripped that way. I'm not sure if the same method can be used for AF lenses like the limiteds, that's something I would have to check.

Since you and other have given me your opinion about butchering I'm now also convinced that it is better to sell the Pentax lenses and buy either Canon lenses or other third party lenses that can easily be used. I am then thinking of Leica 35/2 and also the new Zeiss lenses for Nikon (there are adapters for Nikon lenses to EOS mount). Another interesting option is the Nokin 100mm DC lens...

Right now all this doesn't matter that much. I have to save more money and I also want to see what the K10D can be like in real life (as opposite to all the speculations that I find meaningless).

regards,

Jonas
 
*isteve said:
Yes but unfortunately we have both been really busy since!! I can
tell you there is very little in it, but I like the bokeh better on
the 77 and of course its faster!! I dont think the resolution
difference is measurable.
Click to expand...
That's what i suspected from having seen Richard's and Mskad's pictures. For finding resolution differences one might have to try with Technical Pan. Now that doesn't matter really, all it takes is to learn at what apertures the lens(es) will reach max possible resolution with the K10D (which I estimate to be around 63 line pairs per millimter).
Fun to get a leaked report... :)

thank you,

Jonas
 
Hi Jonas, I have seen a conversion firsthand and its not reversible.

I think you are right. Wait for samples. If as the Pentax engineers are claiming the DR of the K10 is particularly good, and the high ISO noise is not particulalry bad, the reasons for choosing a 5D become less convincing given the costs involved.

I am not much bothered about noise magnitude at ISO1600, but more about what kind of noise it is - blotchy chroma noise (like the A100) is a real pain to remove and looks awful. Tight luminance noise is much less noticeable in prints, does not much affect image detail and is far easier to remove. I would be quite happy if they just get the aesthetics of the noise right and dont mess with the NR too much.
There again, you could sell me some of you nice lenses if I stay with Pentax;)
Jonas B said:
Godfrey said:
Jonas B said:
I think reversible conversion.
Click to expand...
The K-mount to EOS mount conversions I've seen have not been
reversible.
Click to expand...
I have replied to you above:
http://forums.dpreview.com/forums/read.asp?forum=1036&message=20663432
(Not sure you saw it)

About reversible conversion; the German eBay seller phototools24
sells one of the available adapter rings (there are several
manufacturers and sellers, Cameraquest is another but very
expensive). I have a pdf I got by mail from Rolf at Phototools24
that describes how you remove the aperture lever without drilling
or any other serious surgery. It shows a manual lens getting
stripped that way. I'm not sure if the same method can be used for
AF lenses like the limiteds, that's something I would have to check.

Since you and other have given me your opinion about butchering I'm
now also convinced that it is better to sell the Pentax lenses and
buy either Canon lenses or other third party lenses that can easily
be used. I am then thinking of Leica 35/2 and also the new Zeiss
lenses for Nikon (there are adapters for Nikon lenses to EOS
mount). Another interesting option is the Nokin 100mm DC lens...

Right now all this doesn't matter that much. I have to save more
money and I also want to see what the K10D can be like in real life
(as opposite to all the speculations that I find meaningless).

regards,

Jonas
Click to expand...
--
Steve
Measurebating makes you short sighted.
http://www.pbase.com/steve_jacob
 
Robert Chow said:
Jonas B said:
Hi Rosco. Thank you.
I'm not sure the butchery is irreversible. See my reply to Al.
Click to expand...
My understanding is that these conversions are irreversible.
Another direction could be to take advantage of the high selling
prices of Pentax glass (especially, the good stuff like the
Limiteds). Apply the funds toward the upcoming 50mm/f1.2 L. I hate
to think of the lovely 31mm & 77mm Limiteds getting the axe.
Click to expand...
I think you all are right. The thought of butchering the pentax lenses seem to make many a little upset. Now I am thinking a mix of Canon, Leica and Zeiss lenses instead. It will take long time to save up for all this. Probably 6D will be out, with a new and higher price maybe... :)

regards,

Jonas
 
Duncan J Murray said:
Duncan J Murray said:
(at least to an amateur ready to give up
Laphroig for a year or so).

regards,

Jonas
Click to expand...
I wasn't too concerned that you were leaving Pentax for a nice C/
camera, but surely this is going too far?
Click to expand...
Thank you for setting things into a perspective. Damn it, I want a 50/1.2 with USM and rounded aperture blades, a 5D, and my Laphroig, all at the same time. I have to postpone this.

Skål,

Joans
 
Hi Steve,

There seem to be at least three different ways to make the "conversion". I don't know any of them in detail but i would try the idea with a reversible action first.

For the rest of it, yes, I really hope the good people at Pentax will manage to minimize chroma noise. Something more like Nikon and less like Sony.

Selling lenses.... you know, with the prices you are used to in the UK you are my favourite customers.

:))

regards,

Jonas
*isteve said:
Hi Jonas, I have seen a conversion firsthand and its not reversible.
I think you are right. Wait for samples. If as the Pentax engineers
are claiming the DR of the K10 is particularly good, and the high
ISO noise is not particulalry bad, the reasons for choosing a 5D
become less convincing given the costs involved.
I am not much bothered about noise magnitude at ISO1600, but more
about what kind of noise it is - blotchy chroma noise (like the
A100) is a real pain to remove and looks awful. Tight luminance
noise is much less noticeable in prints, does not much affect image
detail and is far easier to remove. I would be quite happy if they
just get the aesthetics of the noise right and dont mess with the
NR too much.
There again, you could sell me some of you nice lenses if I stay
with Pentax;)
Click to expand...
 
Jonas B said:
Jonas B said:
The K-mount to EOS mount conversions I've seen have not been
reversible.
Click to expand...
I have replied to you above:
http://forums.dpreview.com/forums/read.asp?forum=1036&message=20663432
(Not sure you saw it)
Click to expand...
I didn't, sorry. Trying to keep up with all the posts on this forum is quite difficult, and I do have to get some photography done sometime. ;-)

Same goes for all the measurement/testing posts, unfortunately. While fascinating technically, most of it produces nothing of any significance to practical use for me and I tend to skip over them. I just don't have the time to be measuring and calibration all the time. I did that when I was working at the Lab and using cameras for data collection ... that's not pictorial photography or art, which are my current thrusts in this business.
Jonas B said:
About reversible conversion; the German eBay seller phototools24
sells one of the available adapter rings (there are several
manufacturers and sellers, Cameraquest is another but very
expensive). I have a pdf I got by mail from Rolf at Phototools24
that describes how you remove the aperture lever without drilling
or any other serious surgery. It shows a manual lens getting
stripped that way. I'm not sure if the same method can be used for
AF lenses like the limiteds, that's something I would have to check.
Click to expand...
I've seen two of these adapters and was not impressed with either. It's a tough adaptation, the bayonet ears end up inconveniently in the wrong places. Removing the iris actuator, shortening it, and restoring it seems to be required too. Not for me. ;-)
Jonas B said:
Right now all this doesn't matter that much. I have to save more
money and I also want to see what the K10D can be like in real life
(as opposite to all the speculations that I find meaningless).
Click to expand...
I find the endless speculation and incessant whining by a few people more than just meaningless, it's downright annoying, and I skip over most of it without reading. I am sure the K10D will do well for me and am not worrying about it at all.

I'm actually getting interested now in more information about the Pentax 645D, moreso than the Canon 5D. I've always loved medium format work, and if Pentax can pull off a price in the $2000-3000 ballpark for this camera it would be a very interesting thing.

Godfrey
 
Godfrey said:
I'm actually getting interested now in more information about the
Pentax 645D, moreso than the Canon 5D. I've always loved medium
format work, and if Pentax can pull off a price in the $2000-3000
ballpark for this camera it would be a very interesting thing.
Click to expand...
I'm kind of hoping they do too. It would be nothing short of revolutionary! Folks do seem to forget that this is an option for Pentax uniquely of all SLR makers! $3000 (or even $4000) would totally upset the applecart.

K10 will provide IQ adequate for my personal needs. I do worry sometimes about agency needs, but who am I kidding. I'm a few years off that and if the 645 is a success, it will be the least of my worries.

Now if Pentax would just produce some more flash options, like a nice macro ringflash and a radio control kit....;)
Godfrey said:
Godfrey
Click to expand...
--
Steve
Measurebating makes you short sighted.
http://www.pbase.com/steve_jacob
 
I am right in the midst of selling much of my Canon equipment, have a D60 and a Rebel XT on ebay now along with three lenses, the Sigma 17-70 zoom one of them. I have no intention of leaving Canon all together. I intend to use the money from those sales to buy a 5d. I'll keep a 24mm, 35mm, 50mm 1.4, 24-135 IS zoom, and a 70-200 L zoom with 1.4 tele converter to use with the 5 d when I get it.I think those lenses are all I'll need. I never do long tele shots, so the long end is not all that much a concern.

I will continue with the Pentax as my camera of choice. I'll get a k10D after they are out a while and perhaps a K100D as a DL replacement for my take along camera next summer. The DL was superb this summer with a 24mm prime. I'll hang on to my original *istD because it is such a wonderfully designed and finished gem. Mine is getting dirt behind the focusing screen and a few hot pixels, showing its age, in other words, but still works wonderfully. The DS has been an orphan since I got the DL. I just like the DL better than the other two. It is light and quick and has a nice LCD and works just perfectly.

Where I'm heading, is that Canon primes are just wonderful lenses. The 50mm 1.4 is one of the best rated lenses ever and costs far less than the limiteds. Even the 70-200 L zoom is not all that expensive, a little over $600. I sincerely doubt you would want to be butchering and engaging a lot of extra work using Pentax lenses on the Canon 5d. I'm pretty sure you would want to use genuine Canon lenses just like you use genuine Pentax lenses on your Pentax bodies.
--
Dave Lewis
 
Godfrey said:
Jonas B said:
I don't like the 50/1.4 that much, I'll rather have a good look at
the reports about the EF50/1.2L when it materializes. Then maybe
the 28/1.8 and the 100/2
Click to expand...
I'm curious: what don't you like about the 50/1.4? It's an
excellent lens, its rendering qualities are very very close to the
Pentax FA50/1.4.

http://homepage.mac.com/ramarren/photo/PAW3/large/53.jpg
© 2003 by Godfrey DiGiorgi
Canon 10D+50/1.4

http://homepage.mac.com/ramarren/photo/PAW3/large/53a.jpg
© 2003 by Godfrey DiGiorgi
Canon 10D+50/1.4
Click to expand...
Oops. Here is another post I missed in this thread.

I have seen many pictures taken with the Canon 50/1.4. Some of them, like the two you show above are rendered in a very nice way, easy to the eyes and with overall good qualities.

Then I have also seen less appealing pictures. There are two recent examples shown by joe mama in the 85/1.2 versus FA77 thread:
http://forums.dpreview.com/forums/read.asp?forum=1036&message=20633140
and
http://forums.dpreview.com/forums/read.asp?forum=1036&message=20637786
(the color one, the lower b&w is again okey)

They show the bright ring bokeh resulting in some double lining and the resulting bokeh is, to my eyes, distracting. The same can from time to time be seen in FA50/1.4 pictures.

I understand that joe mama likes the pictures (all three) and I can appreciate them as well, but there is that thing with the background. I understand I'm a little sensitive to this and sometimes I make that joke about being a "bokeh snob" which is partly joking and partly taking my shortcomings seriously...

I also know that all lenses can be provoced to deliver some harsh bokeh. If not in the background so at least in the foreground. And it differs between all possible relations possible between the distance(s), light, motif and aperture.

If the new Canon EOS 50/1.2L is just a bit more gentle soft and dreamy, and in the best of worlds maybe even renders pictures a little like the Leica Noctilux, then I won't be able to resist.
Or maybe it is just my need of some more heavy stuff to carry... :)

regards,

Jonas
 
No, you didn't miss anything in that post. It was instead me which linked to the wrong post. Most of the discussion is about noise level on 5d. But if you read the whole thread you will also find that discussion about noise does create a lot of noise :-)
 
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