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Forum: Pentax News and Rumors 03-19-2021, 06:45 AM  
Video - introducing the K3iii
Posted By Class A
Replies: 125
Views: 10,925
Actually, it is the other way round.

The APS-C format is a stress test for FF lenses as any of their imperfections are put under a 1.5x magnifying glass.

Yes, on the one hand, the APS-C format cherry-picks the best performing centre part of the image circle, but on the other hand, the higher enlargement needed (to get to the same output size) amplifies all optical aberrations, regardless of their nature.

Yes, an FF sensor will capture the weakest portions of the image circle of lenses, but again with less magnification and therefore in a more forgiving manner. Vignetting can be easily addressed in post-processing and very few genres require excellent resolution in image corners.
Forum: Pentax News and Rumors 03-02-2018, 03:50 AM  
K3ii replacement
Posted By Rondec
Replies: 2,451
Views: 212,766
If people want a D500 equivalent then they should probably just get a D500. I've said before, but I would think Pentax would release a K3 II sequel that has two card slots, some improvement in auto focus, buffer of 35 to 40 RAW files, frame rate of somewhere between 8 and 9 fps and probably some bump in video specs. I hesitate to guess on video because while the market seems to expect 4K video at this price point, Pentax has not been very aggressive at adding top end video to their cameras.

Of course, it will have an accelerator chip and IBIS and astro tracer and improved pixel shift.

The goal is to have a camera that stands out versus others in the market -- not one that mimics an existing camera already out there.
Forum: Pentax News and Rumors 02-26-2018, 08:24 PM  
Good: New roadmap, new lens
Posted By mee
Replies: 407
Views: 34,580
At some point you realize she is always coming up with excuses when you see her out.. too busy to go out with you and isn't returning your calls.... shes gone, man. You can keep waiting for her to change her mind.. to come around.. but in her heart she is interested in D-FA and DA* things now.
Forum: Pentax News and Rumors 02-25-2018, 06:07 PM  
LAOWA 25mm F2.8 2.5-5X ULTRA MACRO for K-mount
Posted By sculptor666
Replies: 22
Views: 4,705
lenses like this look fun, but with no aperture lever there's no benefit to using it over a reversed 28mm lens.

if i put a reversed 28mm on the end of all my extension tubes (about 150mm), it's a little over 7:1. working distance for the dfa 50mm macro runs out a little over 3:1. maybe kaf4 will make it possible for an A setting for these kind of lenses... but afaik none of the (2:1, the mitakon 4:1) apertures communicate with any brand body.
Forum: Pentax News and Rumors 02-25-2018, 05:16 PM  
Australian K-1 Owners
Posted By Sandy Hancock
Replies: 47
Views: 5,541
Don't worry. That will happen.
Forum: Pentax News and Rumors 02-25-2018, 03:31 PM  
LAOWA 25mm F2.8 2.5-5X ULTRA MACRO for K-mount
Posted By JPT
Replies: 22
Views: 4,705
Im believe this lens was known about before, but Laowa is going to be showing it at CP+ and confirmed that there will be a K-mount version.

?????MF????LAOWA 25mm F2.8 2.5-5X ULTRA MACRO? - ???? Watch
Forum: Pentax DSLR Discussion 05-06-2016, 07:14 PM  
The K-1 is absolutely killing me
Posted By Quartermaster James
Replies: 34
Views: 5,301
I don't have those lenses, but I do have that lust.
Forum: Pentax DSLR Discussion 10-24-2016, 05:29 PM  
Ricoh quiet about K3 2 Successor
Posted By totsmuyco
Replies: 147
Views: 15,801
I agree. A lot of the members here are waiting for an improved AF. I'm not a technical person but, from what I've observed faster AF is a double-edged sword. Pentax has to improve camera AF and lens AF. Majority of the Pentax lenses offered in APS-C format are kinda slow. I think there should also be updates on these lenses to improve AF performance. The new 55-300 is a good example. However, removing the aperture lever is making all other cameras obsolete. I bought my K-5II last February 2014. Because of this move, in just two years it became obsolete. It's cruel to people with older cameras if Pentax will no longer have lenses with aperture levers. But who knows? Maybe Pentax is right in doing this. We'll just have to wait and see.
Forum: Pentax News and Rumors 10-20-2016, 07:14 AM  
Sigma 85mm F1.4 discontinued
Posted By hoopsontoast
Replies: 202
Views: 24,365
Lovely shots, I have often thought of downsizing my Sigma 85mm f1.4 to the FA77, DA70 or D-FA100 Macro but not quite decided yet.

I would love a more compact portrait lens like the K85 or VL90 I used to have :cool:

Portrait Lenses by Robert Seymour, on Flickr
Forum: Troubleshooting and Beginner Help 10-20-2016, 02:18 AM  
having trouble deciding on a macro lens and if i should even get one.
Posted By Giklab
Replies: 21
Views: 2,212
There are a couple of things to mention here - magnification is the ratio between the size of the actual thing you're photographing and the image on the sensor. So if your bug is 5cm wide and it fills the sensor (which is about 2.4cm wide) you're getting a magnification of 1:2. An actual macro lens goes to 1:1 so you could get half the bug in one picture.

You would, however, have to get closer to the bug - it's a bigger magnification and a shorter lens (although I'm not sure how close you must be with the Raynox, maybe this won't change at all). With the 100mm, you need to be about 10cm away from whatever you're photographing.

As far as sharpness, the 100mm will be much sharper than the 50-200 with the Raynox or extension tubes. I had a chance to try the 50-200 with tubes and it was surprisingly good, but still nowhere near a macro lens.
Forum: Pentax DSLR Discussion 10-19-2016, 06:28 PM  
Ricoh quiet about K3 2 Successor
Posted By mee
Replies: 147
Views: 15,801
That is one of the reasons why I'm currently waiting to see what they show.. that plus flippy screen, improved wifi, and AF system would make a nice upgrade over the K-3 II versus just buying the K-3 II.

We are in the situation we had a few years ago when the K-5 II was the current crop flagship, the K-30 was just released and had new features that the flagship didn't have.. until months later when the K-3 arrived.
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