Not that much, ir is easier to use legacy lenses on a P3N or film KX than on any DSLR. Aperture linkage for metering is taken away on M setting. Pentax dropped the ball there.
@@carlosencarnacion9667 I use the green button in manual mode to get most of my Pentax digital cameras to give a meter reading in many of my vintage k Mt lenses. I usually shoot in manual anyway so i'm not too bothered by this issue. I'm happy I can at least do that. Many other brands have gone through multiple incompatabke mount changes.
@@jimzielinski946 I will grant you that, it is why I am Pentaxian, but, the foundation of the photographer-camera relationship is the M-setting, the rest of the camera system and advanced features, should be built around that. Making it a convoluted process is my gripe, I could easily meter any lens on a KX on stopped down mode, even enlarger lenses, or even a pinhole made of foil, while could use any k mount lens on wide open metering, then use the dof button to check dof when needed. Now I have to go through a convoluted process and it irks me.
Thanks for the comparison Kobie, I had a choice between the Sigma 170-500 APO and the Pentax DA* 50-135mm f2.8, I decided to go for the Pentax DA* 50-135mm f2.8, even though it does not have the reach of the 170-500, quality over quantity anytime.
Kobie The K3-3 looks fantastic I have used the 55-300 on the K50, K70 and the K3-11 no surprise the K3-11 with more focus points gives me more keepers. I have my old Tamron 75-300 screw mount lens it does not get sharp until F-11 without Pentax shake reduction the lens would be ineffective.
Apparently that lens in the newer DG version is pretty sharp and much improved. It has the Sigma wrinkle coat paint finish on it and is pretty rare and definitely overpriced. Its hard to tell based on the reviews on Pentax forums if it is sharper than other modern 3rd party long telephoto zooms. But it seems AF was working okay at least.
@@KobieMC There's one on ebay out of Japan, its been on for weeks now, but they're asking too much. At that price you're not far off a newer model with HSM and OS.
I know you are pushing in and holding the back focus button in continuous focus, but at the moment you are firing, are you still keeping the back button focus button pinned down, or letting it go for a second while firing, then pushing it back after?
LOL! All my lenses are screw drive. It would be great to see how that K-3 III would work with an FA*600/4 or an F* 300/4.5 and event the FA* 80-200/2.8.
I really wonder this old Sigma 170-500 lens from the film era gives less of the CA/Purple fringe issues. Do you apply corrections with software? Thank you
I still have the K3 since Dec. 2013 and even back then the AF system was pretty crap. I got good results when I took my time and learned how to 'read' the focus 'crackle' properly in order to get a shot into focus, but after about a year later I got sick of this garbage and left Pentax for good. They never really addressed their woeful focus malaise. 7 years down the road they may have improved the AF but selling an APSC camera without a tilt screen for $2000? And where are the APSC lenses?
Many people go on about a $2000 camera without a tilt screen but forget that the top line Nikon DSLR's (D2, D3, D4, D5, D6) all don't have a tilt screen. Taking the more recent bodies (D5 and D6) they cost much more. New than the K-3 III. So at the end of the day, it's about what the camera is for and focusing on those specifics instead of just what people want which would compromise the original goal of the camera. Want a tilt screen? Get a KP. Want astrophotography get a K-1/II. Want a high speed action oriented camera? Get a K-3 Mark III.
The Sigma 50-500 is the best Sigma for Pentax I think, or the 150-500 (second choice). But I don't know if these old superzooms works with KP-K70 and K3 mark III. They are not updated at the firmware level for such recent Pentax bodies.
@@KobieMC In Italy some say they have the K1 mark II to get the update from Sigma which still does it for free, it seems. But not everyone really owns the K1 mark II from what they say. Others say that on the K70 the 50-500 does not work, even the 120-400 apparently. I never understood anything. Using pentax cameras in Italy is very complicated.
Somewhat like my Sigma 17-70 F/2.8-4 DC Macro HSM. At F/2.8 the camera reports F/1.7 but when I stop down, the F-number is correct. That lens is old though so I doubt they'd update anything for it lol.
Anyone that has ever done enlargements knows that a 2X enlargement on an 8X10 paper you will see some degraradtion, using a FF film era lens on a half frame APS-C is the equivalent to a 2X enlargement, That lens would render a sharper 8X10 enlargement on a FF sensor or film and the same amount of degradation on a 2X enlargement on an 8X10 paper. Compare a film era lens performance on a K-! vs on any APS-C and you will see some degradation. It is not that the lens is not sharp, it is that it was designed for a larger sensor. K-1 user would not have the same complaints about sharpness and CA as APS-C users with the same lans.
@@KobieMC I have a Tamron 70-200 for K mount screw drive with the same issues. It looks similar to your Sigma. Looks like they used the same optics back then. But some your pics are pretty sharp! Great vid!
Try to get some proper lens :) like Sigma 100-300/4 EX APO DG.. that has plenty of resolution, constant F4, focuses fast... and these days those are around $700-800, which is fair price for such hi-performance lens.
I've looked out of curiosity, can't find any in K-mount. A bunch of 100-300 F/4.5-6.3 or 6.7's are available. And of course, Nikon and Canon mount. Or the manual F/4.5 version for Pentax.
I am impressed with the effort Pentax puts in to accommodate the use of old K mount lenses.
Not that much, ir is easier to use legacy lenses on a P3N or film KX than on any DSLR. Aperture linkage for metering is taken away on M setting. Pentax dropped the ball there.
@@carlosencarnacion9667 I use the green button in manual mode to get most of my Pentax digital cameras to give a meter reading in many of my vintage k Mt lenses. I usually shoot in manual anyway so i'm not too bothered by this issue. I'm happy I can at least do that. Many other brands have gone through multiple incompatabke mount changes.
@@jimzielinski946 I will grant you that, it is why I am Pentaxian, but, the foundation of the photographer-camera relationship is the M-setting, the rest of the camera system and advanced features, should be built around that. Making it a convoluted process is my gripe, I could easily meter any lens on a KX on stopped down mode, even enlarger lenses, or even a pinhole made of foil, while could use any k mount lens on wide open metering, then use the dof button to check dof when needed. Now I have to go through a convoluted process and it irks me.
Love your impromptu chat Kobie - you do the most down to earth videos!
Thank you!
Nice comparison video Kobie. The K3 iii images are much better quality I'd say. Sounds like your really getting to grips with the new body now!
Thanks for the comparison Kobie, I had a choice between the Sigma 170-500 APO and the Pentax DA* 50-135mm f2.8, I decided to go for the Pentax DA* 50-135mm f2.8, even though it does not have the reach of the 170-500, quality over quantity anytime.
Kobie
The K3-3 looks fantastic I have used the 55-300 on the K50, K70 and the K3-11 no surprise the K3-11 with more focus points gives me more keepers. I have my old Tamron 75-300 screw mount lens it does not get sharp until F-11 without Pentax shake reduction the lens would be ineffective.
I found the same with the Sigma 120-400 so I traded it. I have the DFA 150-450 now and that is a revelation.
Apparently that lens in the newer DG version is pretty sharp and much improved. It has the Sigma wrinkle coat paint finish on it and is pretty rare and definitely overpriced. Its hard to tell based on the reviews on Pentax forums if it is sharper than other modern 3rd party long telephoto zooms. But it seems AF was working okay at least.
Ya, the DG version of this lens is like a unicorn. You hear about them, but nobody has seen one lol
@@KobieMC There's one on ebay out of Japan, its been on for weeks now, but they're asking too much. At that price you're not far off a newer model with HSM and OS.
That's right. The actual Japanese version has no description and is too expensive for that. If you get it, you get a surprise. Works or not.
I know you are pushing in and holding the back focus button in continuous focus, but at the moment you are firing, are you still keeping the back button focus button pinned down, or letting it go for a second while firing, then pushing it back after?
I'm holding it down the entire time while shooting each sequence.
@@KobieMC thanks!🙂
LOL! All my lenses are screw drive. It would be great to see how that K-3 III would work with an FA*600/4 or an F* 300/4.5 and event the FA* 80-200/2.8.
I really wonder this old Sigma 170-500 lens from the film era gives less of the CA/Purple fringe issues. Do you apply corrections with software? Thank you
It gives a good amount CA. I shoot raw so I do the corrections in software. If I'm shooting Jpeg I let the camera deal with it lol.
Sea Gull Rule #157 " When in sight of a photographer, Hide!"
I still have the K3 since Dec. 2013 and even back then the AF system was pretty crap. I got good results when I took my time and learned how to 'read' the focus 'crackle' properly in order to get a shot into focus, but after about a year later I got sick of this garbage and left Pentax for good. They never really addressed their woeful focus malaise. 7 years down the road they may have improved the AF but selling an APSC camera without a tilt screen for $2000? And where are the APSC lenses?
Many people go on about a $2000 camera without a tilt screen but forget that the top line Nikon DSLR's (D2, D3, D4, D5, D6) all don't have a tilt screen. Taking the more recent bodies (D5 and D6) they cost much more. New than the K-3 III. So at the end of the day, it's about what the camera is for and focusing on those specifics instead of just what people want which would compromise the original goal of the camera. Want a tilt screen? Get a KP. Want astrophotography get a K-1/II. Want a high speed action oriented camera? Get a K-3 Mark III.
The Sigma 50-500 is the best Sigma for Pentax I think, or the 150-500 (second choice). But I don't know if these old superzooms works with KP-K70 and K3 mark III. They are not updated at the firmware level for such recent Pentax bodies.
I know they work for K-1/II after firmware updates by Sigma. Whether Sigma is still doing the free firmware updating for Pentax is another story.
@@KobieMC In Italy some say they have the K1 mark II to get the update from Sigma which still does it for free, it seems. But not everyone really owns the K1 mark II from what they say. Others say that on the K70 the 50-500 does not work, even the 120-400 apparently. I never understood anything. Using pentax cameras in Italy is very complicated.
Somewhat like my Sigma 17-70 F/2.8-4 DC Macro HSM. At F/2.8 the camera reports F/1.7 but when I stop down, the F-number is correct. That lens is old though so I doubt they'd update anything for it lol.
@@KobieMC yes, it is true.
Anyone that has ever done enlargements knows that a 2X enlargement on an 8X10 paper you will see some degraradtion, using a FF film era lens on a half frame APS-C is the equivalent to a 2X enlargement, That lens would render a sharper 8X10 enlargement on a FF sensor or film and the same amount of degradation on a 2X enlargement on an 8X10 paper. Compare a film era lens performance on a K-! vs on any APS-C and you will see some degradation. It is not that the lens is not sharp, it is that it was designed for a larger sensor. K-1 user would not have the same complaints about sharpness and CA as APS-C users with the same lans.
I have used the lens on a K-1 II with similar results. It's just not a sharp lens. Look up the test reviews yourself. The info is out there.
@@KobieMC I have a Tamron 70-200 for K mount screw drive with the same issues. It looks similar to your Sigma. Looks like they used the same optics back then. But some your pics are pretty sharp! Great vid!
Try to get some proper lens :) like Sigma 100-300/4 EX APO DG.. that has plenty of resolution, constant F4, focuses fast... and these days those are around $700-800, which is fair price for such hi-performance lens.
I've looked out of curiosity, can't find any in K-mount. A bunch of 100-300 F/4.5-6.3 or 6.7's are available. And of course, Nikon and Canon mount. Or the manual F/4.5 version for Pentax.
If u calibrate your lens you get sharper photos
I'm well aware of that. Thanks though.
Then, give it to me your lens, ill going to make it sharper...
It's not my lens