ET2

Joined on Aug 25, 2010

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Total: 1259, showing: 1 – 20
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In reply to:

cgarrard: Uh, Pentax did this a LONG time ago?

Whats wrong? Everyone and their dog knows that Hasselblad and Olympus released camera first where the sensor was moved to increase resolution and remove the negatives of Bayer RGB color filter, except Pentax fanboys like you. Pentax fanboys are a joke.

Link | Posted on Nov 13, 2017 at 14:34 UTC
In reply to:

cgarrard: Uh, Pentax did this a LONG time ago?

No, it's the same thing that Olympus and Hasselblad do. Sony and Pentax just downsample the final result to original size. You can do the same with other by downsampling the final image.

Didn't you read what I posted above?

https://www.dpreview.com/articles/4410648565/hasselblad-unveils-pixel-shifting-200mp-h5d-200c-ms

Read what it says. It's exact same pixel shift by moving the sensor. All three use pixel shift by moving the sensor.

Pentax wasn't the first. It just copied Hasselblad and Olympus idea.

Link | Posted on Nov 13, 2017 at 14:16 UTC
In reply to:

cgarrard: Uh, Pentax did this a LONG time ago?

Even in the consumer market, Olympus was first, not Pentax, and the general idea was there for years. With software, anyone could produce similar results with any camera in burst mode. That's what Photoacute software did long before Pentax

https://www.photoacute.com/index.html

Link | Posted on Nov 13, 2017 at 06:41 UTC
In reply to:

cgarrard: Uh, Pentax did this a LONG time ago?

Dante Birchen. no Hasselblad does the same thing. See

https://www.dpreview.com/articles/4410648565/hasselblad-unveils-pixel-shifting-200mp-h5d-200c-ms

"While this increases the detail resolution of the file, the multi-sampling exercise also allows the camera to collect more colour data as points in the subject are viewed via each of the red, green and blue filters of the standard Bayer filter array. According to Hasselblad, multi-shot modes reduce the need for colour interpolation, and thus produce colours much more faithful to the scene. The additional detail sampled also avoids the moiré patterning that can occur when the resolution of the subject exceeds that of an AA filter-free sensor."

Link | Posted on Nov 12, 2017 at 18:39 UTC
In reply to:

cgarrard: Uh, Pentax did this a LONG time ago?

Olympus did it before Pentax too. Hasselblad years ago. cgarrard is a long time troll.

Link | Posted on Nov 12, 2017 at 16:44 UTC
In reply to:

NJOceanView: "...nearly matches chart-topping Nikon.." As long as it doesn't ever match or exceed Nikon, DPR can rest easy.

A7RII already beats D850 at high ISO though, and A7RIII will too.

Link | Posted on Nov 1, 2017 at 04:47 UTC
In reply to:

pentaust: Wow, I really like the pixel shift thing. One more innovation from SONY. Wait, didn't PENTAX already implement pixel shift in all of their camera already years ago, plus including motion correction? Let ignore that one. Focus on anything SONY is great, especially marketing budget LOL.

Downsample the super-resolution to the original size, and you will see it has more resolution, less moire, and less noise than a single shot image, the exact same result you get from in-camera pixel shift.

Link | Posted on Oct 26, 2017 at 19:20 UTC
In reply to:

pentaust: Wow, I really like the pixel shift thing. One more innovation from SONY. Wait, didn't PENTAX already implement pixel shift in all of their camera already years ago, plus including motion correction? Let ignore that one. Focus on anything SONY is great, especially marketing budget LOL.

You can do the same thing with any camera (hand held) using burst mode

https://petapixel.com/2015/02/21/a-practical-guide-to-creating-superresolution-photos-with-photoshop/

Link | Posted on Oct 26, 2017 at 16:10 UTC
In reply to:

pentaust: Wow, I really like the pixel shift thing. One more innovation from SONY. Wait, didn't PENTAX already implement pixel shift in all of their camera already years ago, plus including motion correction? Let ignore that one. Focus on anything SONY is great, especially marketing budget LOL.

Hasselblad had it years before Pentax, so did Olympus.

Link | Posted on Oct 26, 2017 at 13:32 UTC
On article What you need to know about Sony's a7R III (622 comments in total)
In reply to:

Iloveaircraftnoise: Its quite obvious they've made the camera slightly larger to accommodate 2 memory slots and a bigger battery.

So each new release is taking us a step closer to DSLR size.

depends on the lens

http://camerasize.com/compact/#724.515,486.479,ha,t

Link | Posted on Oct 26, 2017 at 11:54 UTC
On article What you need to know about Sony's a7R III (622 comments in total)
In reply to:

Triplet Perar: Most important question: when in 5 months Sony issues updated version of this camera, will they go for the a7R IIII or a7R IV name? In Roman numerals, number 4 can be written as IIII.

"I admit, there are too many a7 models"

There are only three

(1) A7
(2) A7s
(3) A7R

(1) A7 is lower priced entry level ( ($1600 for A7II on Amazon).

(2) A7s is lower resolution high ISO camera that was designed for videographers (both A7s and A7sII were announced at NAB, national association of broadcasters, as they were marketed as video cameras. Next NAB in April 2018 might see A7sIII)

(3) A7R is the high-resolution model. A7RII was announced in 2015. A7RIII 2 years later.

Clear now or are you still confused?

Link | Posted on Oct 26, 2017 at 05:29 UTC
In reply to:

chaos215bar2: Great improvements all around, but…

"However, unlike the system Pentax uses or the earlier, 8-shot process used by Olympus, the a7R III cannot assemble the final images in-camera. Instead four Raw files must be processed using a freely downloadable image processing application for PCs that Sony will offer. The camera must also wait either 0.5, 1, or 2 seconds between shots for the sensor to settle, which is likely to exacerbate the problems of subject movement between the first and last shot."

Okay, so this is useful for shooting rocks with a tripod and not much else. Too bad.

"The camera features essentially the same body as the a7R II, but Sony has found room for a focus point selection joystick, AF-On button, twin SD card slots, flash sync socket and, most importantly, the higher-capacity battery of the a9."

I'd have just gone with, "The camera features essentially the same body as the a9, minus the drive mode dial." (Did I miss anything?)

chaos215bar2, So? It only works with subjects that aren't moving, that includes product and architecture photography. The same applies to Pentax implementation, which requires the use of a tripod.

Link | Posted on Oct 26, 2017 at 04:39 UTC
In reply to:

chaos215bar2: Great improvements all around, but…

"However, unlike the system Pentax uses or the earlier, 8-shot process used by Olympus, the a7R III cannot assemble the final images in-camera. Instead four Raw files must be processed using a freely downloadable image processing application for PCs that Sony will offer. The camera must also wait either 0.5, 1, or 2 seconds between shots for the sensor to settle, which is likely to exacerbate the problems of subject movement between the first and last shot."

Okay, so this is useful for shooting rocks with a tripod and not much else. Too bad.

"The camera features essentially the same body as the a7R II, but Sony has found room for a focus point selection joystick, AF-On button, twin SD card slots, flash sync socket and, most importantly, the higher-capacity battery of the a9."

I'd have just gone with, "The camera features essentially the same body as the a9, minus the drive mode dial." (Did I miss anything?)

"Okay, so this is useful for shooting rocks with a tripod and not much else. Too bad."

It works when shooting subjects that aren't moving, same as Pentax, which also doesn't work when there is motion. Pentax also needs a tripod for pixelshift mode.

Link | Posted on Oct 25, 2017 at 17:30 UTC
In reply to:

PabloSRT8: And what about Red?
RED Helium 8K DxOMark Sensor Score: 108

They apply NR to raw file. That will increase Dxo score artificially. There is no logical reason to believe that smaller sensor in Red cameras is superior to larger sensor in FF cameras. That's a claim that contradicts physics. I call it BS. The score isn't real.

Link | Posted on Oct 12, 2017 at 05:31 UTC
In reply to:

PabloSRT8: And what about Red?
RED Helium 8K DxOMark Sensor Score: 108

Red's raws are cooked. The score isn't real

Link | Posted on Oct 12, 2017 at 04:18 UTC
In reply to:

falconeyes: What is this road? Fantastic, must go there!

Anywhere in Himalayas (north Pakistan, north India, Nepal, Bhutan) will have similar roads and scenery.

Watch Himalaya With Michael Palin

https://www.youtube.com/watch?v=JfuCsEqh0XE

Link | Posted on Oct 8, 2017 at 16:13 UTC
In reply to:

Julio Sánchez: I think that there are a quality loss. Anybody agree?

n/a

Link | Posted on Oct 8, 2017 at 16:12 UTC
On article Nikon D850 added to studio scene comparison (464 comments in total)
In reply to:

Michael Ma: Look at all the detail the 5D Mark IV missed by having an AA filter. Tsk tsk.

https://www.dpreview.com/reviews/image-comparison/fullscreen?attr18=lowlight&attr13_0=nikon_d850&attr13_1=canon_eos5dmkiv&attr13_2=sony_a7rii&attr13_3=canon_eos5dsr&attr15_0=raw&attr15_1=raw&attr15_2=raw&attr15_3=raw&attr16_0=64&attr16_1=100&attr16_2=100&attr16_3=100&attr171_2=1&normalization=full&widget=1&x=-0.5188665165124419&y=0.38872096403182343

You can take multishot shot images with D850 in burst mode and stack them together in photoshop and get the same benefits. Doesn't mean anything.

D850 has better image quality (higher DR) where it matters, regular everyday usage, which is single shot images.

Link | Posted on Oct 7, 2017 at 07:26 UTC
On article Nikon D850 added to studio scene comparison (464 comments in total)
In reply to:

Michael Ma: Look at all the detail the 5D Mark IV missed by having an AA filter. Tsk tsk.

https://www.dpreview.com/reviews/image-comparison/fullscreen?attr18=lowlight&attr13_0=nikon_d850&attr13_1=canon_eos5dmkiv&attr13_2=sony_a7rii&attr13_3=canon_eos5dsr&attr15_0=raw&attr15_1=raw&attr15_2=raw&attr15_3=raw&attr16_0=64&attr16_1=100&attr16_2=100&attr16_3=100&attr171_2=1&normalization=full&widget=1&x=-0.5188665165124419&y=0.38872096403182343

Stop posting nonsense, dude. There is no difference. It's stacking multiple images. Same thing that Olympus and Hasselblad do. The only difference is that Olympus creates higher resolution image and Pentax downsizes the final result to original size. You can do the same with Olympus final image: just downsample it to the original size. You will get higher resolution image with less noise, more dynamic range and more resolution and less moire.

https://petapixel.com/2015/02/21/a-practical-guide-to-creating-superresolution-photos-with-photoshop/

As regards to your second paragraph regarding AA filter and sensor-shift, you are confusing how Pentax uses sensor shift to mimic AA filter (which is a different topic. It is not a multishot mode -- the images there have lower resolution, and there is no noise or DR benefit like in multishot mode like you see in this studio shots).

If you don't understand something, don't google it and come back here posting confused nonsense.

Link | Posted on Oct 6, 2017 at 18:19 UTC
On article Nikon D850 added to studio scene comparison (464 comments in total)
In reply to:

Michael Ma: Look at all the detail the 5D Mark IV missed by having an AA filter. Tsk tsk.

https://www.dpreview.com/reviews/image-comparison/fullscreen?attr18=lowlight&attr13_0=nikon_d850&attr13_1=canon_eos5dmkiv&attr13_2=sony_a7rii&attr13_3=canon_eos5dsr&attr15_0=raw&attr15_1=raw&attr15_2=raw&attr15_3=raw&attr16_0=64&attr16_1=100&attr16_2=100&attr16_3=100&attr171_2=1&normalization=full&widget=1&x=-0.5188665165124419&y=0.38872096403182343

No, it doesn't take $43,000 medium format body to best the K1. Both D810 and A7Rii have better image quality than K1, according to dxomark. They also have superior AF and are faster according to DPReview.

Don't post nonsense.

Pixel shift isn't imaged quality test. It's stacking multiple images (you can do it with any camera using photoshop) that requires a tripod and still scene. The cameras take multiple shots and stitch the images together. This isn't an invention by Ricoh. Olympus and Hasselblad both did this using IBIS on their cameras before Pentax.

You can also do the same thing with any camera using Photoshop (take multiple shots and stack them together for higher resolution and lower noise).

Here is just one example

https://petapixel.com/2015/02/21/a-practical-guide-to-creating-superresolution-photos-with-photoshop/

The topic of this thread was AA filter on 5D Mark IV. What do all these posts about pixel shift on K1 have to do with the original topic?

Link | Posted on Oct 5, 2017 at 05:09 UTC
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