All Forum Comments
The £2,226 one is an M42 mount!
Comment by JAK posted on FS: Pentax SMC K 500mm f4.5 at 28/11/2016 - 13:21
Not much more for a 128 GB.
link
link
Comment by JAK posted on SanDisk Extreme 90MBs SD 4K Ready Memory Card - 64GB at 27/11/2016 - 14:55
In case I have gave the impression earlier in the thread here that the lens is fully FF compatible, it isn't in the middle of the range. Not to say the vignetting cannot be used on the K-1 creatively.
Genie's Lamp
This is a full frame K-1 unmodifed image with the lens at 120mm, f/4.5. The edge and corner definition holds up well throughout its range even wide open.
Genie's Lamp
This is a full frame K-1 unmodifed image with the lens at 120mm, f/4.5. The edge and corner definition holds up well throughout its range even wide open.
Comment by JAK posted on Amazon: HD Pentax-DA 55-300MM F4.5-6.3 ED PLM WR RE at 26/11/2016 - 11:19
I suppose in theory that's right, but in its present incarnation, there is no liveview image showing in the app so presently that's purely theoretical!
Comment by JAK posted on Pentax K1 Live view - how to change focus point at 26/11/2016 - 11:10
LennyBloke wrote:
I have an un-modded set in front of me now and I had started to photograph each stage of the process to show how the aperture info is not displayed before, and is after....
...well, step one - testing - the aperture info shows on the back screen in AV mode and I can set the aperture from the camera thumbwheel - the aperture does not display on the top LCD screen though, this is where they differ from the Triplus tubes
Thanks for challenging this, it means I don't have to spend any time scraping, finishing and cleaning this set...
Well I'm pleased you've seen the light, err sorry aperture info!I have an un-modded set in front of me now and I had started to photograph each stage of the process to show how the aperture info is not displayed before, and is after....
...well, step one - testing - the aperture info shows on the back screen in AV mode and I can set the aperture from the camera thumbwheel - the aperture does not display on the top LCD screen though, this is where they differ from the Triplus tubes
Thanks for challenging this, it means I don't have to spend any time scraping, finishing and cleaning this set...
Did you mean it doesn't show on the LCD top screen? Can't understand that. I've just retried mine to see if I can replicate that but cannot with my K-1, FA 50mm macro and 31mm tube. It shows there just fine. Mind, I can't be bothered to test every body/lens combination to see if it fails with some but cannot see why it should.
Comment by JAK posted on Manual Extension Tubes at 26/11/2016 - 11:07
Yes, it's given it more credibility.
Comment by JAK posted on new members!!!! at 26/11/2016 - 10:57
All sounds a bit fishy to me!
Glad you made instant use of your new lens, the photos look really fine.
Glad you made instant use of your new lens, the photos look really fine.
Comment by JAK posted on Heron & Pike With New Lens at 25/11/2016 - 15:24
It'll be the app that's got the virus in it. It's scareware to make you install it. Whatever you do do, don't do that!
Comment by JAK posted on Warning system damaged on Google?? at 25/11/2016 - 00:14
davidwozhere wrote:
The KA mount, Jessops set with the 'A' series contacts also works but you need to scrape off a bit of the anodising on each one for the camera to gain control of the aperture - and even then it doesn't report the fact to the viewfinder or the top panel (you only discover that it has worked by looking at on a shot you have taken!!
The KA mount, Jessops set with the 'A' series contacts also works but you need to scrape off a bit of the anodising on each one for the camera to gain control of the aperture - and even then it doesn't report the fact to the viewfinder or the top panel (you only discover that it has worked by looking at on a shot you have taken!!
LennyBloke wrote:
As far as I'm aware none of the Jessops tubes actually carry the Aperture information between lens and body unless the modification is made (this involves removing a small amount of the black paint from the rear of the tube, a few mm's away from the last contact). The modification is not difficult, but it is crucial that you keep everything as clean as possible, because it's very easy for debris to drop inside the tubes and potentially find its way into the camera body.
Sorry to have to disagree with you both! I have a set of Jessops K mount tubes in front of me as write. These PKA/AF tubes are mint, never scraped or otherwise mutilated and have have no problem passing aperture info between the lens and the camera! I've experienced this issue with some teleconverters, but NOT these Jessops K mount extension tubes. Do you have, or have you had, a set of Jessops tubes that have required scraping?As far as I'm aware none of the Jessops tubes actually carry the Aperture information between lens and body unless the modification is made (this involves removing a small amount of the black paint from the rear of the tube, a few mm's away from the last contact). The modification is not difficult, but it is crucial that you keep everything as clean as possible, because it's very easy for debris to drop inside the tubes and potentially find its way into the camera body.
Comment by JAK posted on Manual Extension Tubes at 25/11/2016 - 00:09
I tried it on the K-S1 too (the new 55-300 PLM that is.)
Full image at 300mm:
Pentax K-S1, 300mm, f/6.3 (widest aperture), 1/320sec, ISO 6400
Actual pixels crop from the centre of the image:
Lighting was very poor hence the highish ISO.
And if you're wondering, the FF image from the K-1 at 300mm:
That was at ISO 800 earlier in the day, but still wide open at f/6.3. No cropping on this.
Actual pixel crop from that full frame image
The difference in size of the actual pixel crops is due to the different sensor resolutions of the K-1 & K-S1.
Full image at 300mm:
Pentax K-S1, 300mm, f/6.3 (widest aperture), 1/320sec, ISO 6400
Actual pixels crop from the centre of the image:
Lighting was very poor hence the highish ISO.
And if you're wondering, the FF image from the K-1 at 300mm:
That was at ISO 800 earlier in the day, but still wide open at f/6.3. No cropping on this.
Actual pixel crop from that full frame image
The difference in size of the actual pixel crops is due to the different sensor resolutions of the K-1 & K-S1.
Comment by JAK posted on Amazon: HD Pentax-DA 55-300MM F4.5-6.3 ED PLM WR RE at 24/11/2016 - 18:35
