[biz-engineer]

If you don't print at 32" x 48" (80 cm x 120 cm), which is the Ok quality for a K1 image, your likely most detailed image viewing alternative is probably 4K (3840 x 2160 pixels), the concern of how good is the lens between a Brand A and Brand B suddenly evaporates, and it leave place to thinking about what I should fit in the frame and what not. With the cameras and lenses we have in 2019 (even Pentax), the gear isn't limiting for most people, evaluating lenses at pixel level become irrelevant for what we do with the photographs.

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Last edited by biz-engineer; 05-07-2019 at 10:09 AM.

[Dan Rentea]

If you don't print at 32" x 48" (80 cm x 120 cm), which is the Ok quality for a K1 image, your likely most detailed image viewing alternative is probably 4K (3840 x 2160 pixels), the concern of how good is the lens between a Brand A and Brand B suddenly evaporates, and it leave place to thinking about what I should fit in the frame and what not. With the cameras and lenses we have in 2019 (even Pentax), the gear isn't limiting for most people, evaluating lenses at pixel level become irrelevant for what we do with the photographs.

Talking about versatility, at this point Tamron 35-150mm f2.8-f4 looks to me more appealing than both Canon 24-105mm f4 L IS and Pentax 28-105mm f3.5-5.6 due to focal lenght and aperture.

[OoKU]

[monochrome]

WTH is QFS?

[RGlasel]

WTH is QFS?

Quick shift select, like the DFA 70-200. Except this picture has QFS/A and QFS/M wrapped over two lines instead of on a single line like the 70-200. The round button beside the quick shift switch looks like the AF preset control on the DFA 150-450. Throw in a zoom lock switch and a starting focal length of 50mm, and this is one strange bird. I would ask why the top of the image is masked. it reminds me of test cars with special body panels to mask the true body style to fool spy photographers.

[monochrome]

Quick shift select, like the DFA 70-200. Except this picture has QFS/A and QFS/M wrapped over two lines instead of on a single line like the 70-200. The round button beside the quick shift switch looks like the AF preset control on the DFA 150-450. Throw in a zoom lock switch and a starting focal length of 50mm, and this is one strange bird. I would ask why the top of the image is masked. it reminds me of test cars with special body panels to mask the true body style to fool spy photographers.

On the other thread OoKu captioned the photo

“DFA50-300 F4.5-5.6”

[RGlasel]

This time I compared Ooku's linked image to the DFA 150-450 and got a perfect match for the part of the barrel with the switches. Further down the thread in DigitalFotoNetz, the OP makes the comment that the 50-300 "offen schon sehr hohe Leistung und Bedienung ans 150-450 angelehnt," which could be just based on seeing this same "stealth" photo or could be based on how the person supplying this information describes this new lens. Basically, the suggestion is that while this new lens isn't a * lens, it still has the same class of optics and wiring (translated as level of service) as the 150-450, which means this won't be a budget companion to the 28-105, or a FF equivalent of the DA 55-300. The exact same variable aperture range and barrel size as the 150-450 may be useful clues as well, after all the DFA 28-105 is just a stretched DA 18-135 with a different focal range (same variable aperture range and same barrel diameter) in order to cover a FF image circle. Since both the 150-450 and the putative 50-300 are both DFA zooms, can we speculate that the 50-300 is simply shorter and lighter? Still seems like a strange product offering to me, but who knows what all of its characteristics (including price) will be.

[Rondec]

I guess this thread turned out to be more than just idle speculations...?

[Kunzite]

Since the image was posted by Asahiman, yes...
However, just with an image I still can't kill that thought, perhaps this is just a photoshopped 150-450...

[jatrax]

However, just with an image I still can't kill that thought, perhaps this is just a photoshopped 150-450...

It does match up very closely to the 150-450 though the button looks different.


50-250 f/4 would be interesting. Even 50-250 variable would be nice. I don't think 50-300 though. Probably wishful thinking, since about the only lens I would buy right now would be a DA*60-250 FF replacement. Is it too much to hope this is it? Or just a photoshopped fake?

[TwoUptons]

I don’t think it’s a f4 lens...

I think the slightly tardy 70-200 f4 is aimed at a different user than this one...

I have no reason to doubt the f4.5-6.3 range of what appears to be a 50-300... even if I would’ve preferred f4-5.6 or so...

But they both seem to exist

-Eric

[jatrax]

I don’t think it’s a f4 lens...

Agree. probably not.

I think the slightly tardy 70-200 f4 is aimed at a different user than this one...

Every time I try to categorize Pentax into a neat organized system they toss something completely different into the mix.

If this is modeled on the 150-450 as it appears to be then I will place it in the 'consumer' line of variable aperture lenses. DFA 28-105, DFA 50-250, DFA 150-450.

A DFA 50-250 built to same specs as the DFA 150-450 is a very different item from a FF version of the DA 55-300.

[monochrome]

There was a source reference to RiceHigh at the other place even though asahi man posted the image.

[jatrax]

There was a source reference to RiceHigh at the other place even though asahi man posted the image.

Saw that but that reference was in regard to a potential K1-III which was posted about April 1. Someone asked Asahiman if there was any truth to the K1-III rumor and he posted the 50-???? image and said "no info on cameras".

[monochrome]

Saw that but that reference was in regard to a potential K1-III which was posted about April 1. Someone asked Asahiman if there was any truth to the K1-III rumor and he posted the 50-???? image and said "no info on cameras".

Just shows how badly I want to get out of there once I’m in.