Michael Andrew's Blog, page 20

DXOs P-MPIX is NOT a Lens Sharpness Metric | FF in Crop is same as Crop Camera with same pixel pitch

Thank you to our sponsor http://www.lensprotogo.com for providing the D850, D500 and 24 1.4 Lens used in this test! This was not a paid promotion, they simply lent me the cameras and lens. If you need a fast rental, they are my go to!



For many years I have had questions about DXO Marks various camera tests and scores. The thing that bothered me the most was that they were publishing data and I was never really certain as to how they were coming up with some of their numbers, and I know many others feel the same way I do.



One of their most controversial metrics is the P-Megapixel or Perceptual Megapixel which for the life of me I always refer to incorrectly as the "perceived" megapixel score. It is a cool idea in that it is trying to give viewers an idea of the amount of resolution they would get in a final image when pairing a lens to different sensors. There are a huge number of problems with this idea, the biggest of which we still aren't exactly sure as to what formulas they are using to come up with these numbers.



Heres the bigger problem, new camera owners, or those shopping for a new lens often use these scores to try to get an idea of how "sharp" a lens is. This is not what the P-Mpix score is, which is instead trying to to describe how many megapixels one would get when using the combination. I actually stumbled upon this accidentally when I was testing lens sharpness on a full frame D850 in crop mode compared with a D500. I chose those cameras because they have similar pixel pitch, a variable that impacts diffraction (and therefore image sharpness) and what I learned was, same lens, on similar sensor designs (including pixel pitch) equals similar sharpness.



While DXO doesn't have D850 test scores that I could find, there were scores for the D810, a 36MP camera. The D810's PMPIX Score was 23, compared to the D500s 13 (out of 21).



Crunching the Numbers we get:

D810

23/36.3 = 63.3%



D500

13/20.9 = 62.2%



So this leads me to believe they are taking their tests and applying a "lens penalty" to the overall resolution of the camera. This is whacky because it means if you start with a higher MP camera, the score will be higher, regardless of the actual lens and image performance.



Granted, the D810 is not the same as the D850 and there are likely some differences, but what we can gather from this, is that even when the crop areas are similar to the naked eye, their PMPix scores are vastly different.



This is why we cannot consider DXOs PMpix score as a lens sharpness metric, it should be viewed as a total image detail metric. Having it labeled as "sharpness" is very misleading to the general public, because without doing a similar test, there is no way to really know, and the perception is this PMPIX is a lens sharpness score. It isn't.



I invite anyone interested to download my test images and compare them for yourself: https://www.dropbox.com/s/xs844ccv2ws...



There are a huge number of valuable and other interesting questions that can be asked about image sharpness, and Ill have at least 2 more videos on the topic coming soon!





Michael's Intro Camera Tutorial Videos:



MAVEN Filters, Mini Microphone



Michael's Maven Straps

Best Canon RF Lenses For Beginners Start of 2020 | Canon R RP

By request, I am answering the question of what are the best lens options for a new Canon R or RP owner. Taking into consideration that we can adapt existing EF lenses, that many Canon lens profiles are supported, and the R / RP are not great for sports shooting, here are my suggestions, as well as an overview of each of the existing RF mount lenses at the time of this recording. Also, please note Canon has about 10 more RF lenses coming very soon.



If you are struggling to learn your R or RP, check out my free tutorials on youtube!



If you want an advanced course on the RP, check out my Crash Course on my website!





Michael's Intro Camera Tutorial Videos



MAVEN Filters, Mini Microphone



Michael's Maven Straps







EF to RF Adapters

Canon Control Ring Mount Adapter EF-EOS R



Canon Mount Adapter EF-EOS R

EF Lenses



Canon EF 85mm f/1.8 USM Lens



Canon EF 50mm f/1.8 STM Lens



Canon EF 16-35mm f/2.8L III USM Lens



Canon EF 70-200mm f/2.8L IS III USM Lens



Canon EF 100-400mm f/4.5-5.6L IS II USM Lens



RF Lenses



Canon RF 24-105mm f/4L IS USM Lens



Canon RF 35mm f/1.8 IS Macro STM Lens



Canon RF 24-240mm f/4-6.3 IS USM Lens



Canon RF 28-70mm f/2L USM Lens



Canon RF 50mm f/1.2L USM Lens



Canon RF 85mm f/1.2L USM Lens



Canon RF 85mm f/1.2L USM DS Lens



Canon RF 15-35mm f/2.8L IS USM Lens



Canon RF 24-70mm f/2.8L IS USM Lens



Canon RF 70-200mm f/2.8L IS USM Lens

Uncut Gems

This is not a movie for kids or even teenagers. It vulgar and appalling in many ways, but the reason it is so good is because it is an unapologetic, truthful essay on human nature, desire and flaws. The title is not about precious gems, it is about the characters, each of which have at least one redeeming quality and one incredible weakness. It is highly symbolic and many will be able to relate to it. Very thought provoking. Its hard to recommend because of some of the scenes that are just shocking and inappropriate, but its portrayal of true human nature makes it very strong.

Why Canon will dominate 2020 | 7+ New Cameras & Many New Lenses Coming!

For many years Canon has been resting on the laurels of their Brand name and success. It has opened the door for Sony and other camera companies to step into the video markets. Canon finally responded with the EOS R in 2018, but its about to get absolutely bonkers for Canon. Here's why! Enjoy!



My Training Videos & Gear



MAVEN Filters, Mini Microphone



Michael's Maven Straps





The 1DXIII has already been listed on BHPhoto.com!



Rumors of Canon Gear Coming:



EOS Rs Rumored Details:



EOS RII in Testing



Rebel T8i Like Camera Registered



Canon Has 2 new M mount Cameras coming



Canon's New Hybrid EF/RF Idea



6 New RF Lenses



4 Crazy Fast Canon RF Primes



3 RF Lenses, One EFS Coming



2 Canon RF Kit Lenses





#Canon2020 #CanonLenses2020 #CanonMirrorless2020

Before you buy that nice lens from Wal-Mart! Check for these 2 things!

We had a group member find a great deal on a Canon 24-70 2.8 LII lens on Walmart.com. Turns out, it was too good to be true! Here is what to look for and why a good deal might hurt you in the long run!



Enjoy!



My 90D FB Group



Michael's Canon 90D Crash Course



Michael's Intro Camera Tutorial Videos



MAVEN Filters, Mini Microphone:



Michael's Maven Straps



#Canon90D #CanonLenses #CanonGreyMarketLens





Canon 24-70mm f2.8L II USM Lens

Canon 90D Best Recommended Lenses for New Owners

Ive received many requests to summarize what I recommend for the 90D lens wise for those of you who are just getting started. Main problem we are seeing is with older zooms!



My 90D FB Group



More detailed list of 90D Lense



Michael's Canon 90D Crash Course



Michael's Intro Camera Tutorial Videos



MAVEN Filters, Mini Microphone



Michael's Maven Straps





#90D #Canon90D #Canon90DLenses

The Rise of Skywalker

Of course I saw it tonight. It was easily the best of the last three. I would put it at tied for 4 out of the 9 with Episode 1, Jar Jar Binks aside. Ill have to watch it a few more times to really appreciate it. Without giving anything away, much of it felt like it was trying to fix o apologize for things in Episode 8. Parts of it felt very rushed, trying to fit 2 movies into one.



The reason it was good was because it took new risks on the story line, and that was appreciated.



Absolutely recommended to see in theaters. Ill likely see it again this weekend.

Sony A6600 Ergonomics & Usability Review - Many Nice Improvements!

Sony has made several very subtle changes to the A6600. Some are nearly imperceptible, but they will make a huge difference over the life of the camera. I also throw in my 2 cents on what they should do immediately (likely possible by firmware update) to make it even better, as well as future updates of the camera. Overall, it looks like Sony is listening!



Michael's A6100/A6400/A6600 Crash Course



Michael's Intro Camera Tutorial Videos



Michael's Maven Straps



#A6600 #SonyA6600 #SonyAlpha

Sony A6600 Full Tutorial Training Overview

Here is your free tutorial on the Sony A6600! If you are looking for a specific topic, hit command or control F on your computer and type in the topic. If you are looking for training on the basics of photography as well as more advanced lessons on the Sony A6600, check out my Crash Course here:



Michael's A6100/A6400/A6600 Crash Course:



Michael's Maven Straps:



#SonyA6600 #SonyAlphaA6600 #Sony6000Series



Chapter list:

00:01:46 - Camera Setup

00:05:42 - External Buttons

00:11:02 - ISO

00:11:52 - Drive Modes

00:14:14 - LCD Display

00:19:17 - Black Menu

00:21:03 - Video Mode

00:23:09 - Mode Dial

00:25:03 - Exposure Control

00:38:44 - Auto ISO

00:40:52 - White Balance

00:43:51 - Custom White Balance

00:47:08 - Focusing Modes

00:56:53 - Back Button Focus

01:05:32 - Focus Peaking

01:13:44 - Meterin Modes

01:15:28 - Spot Metering Point

01:17:17 - Deep Menu

01:18:36 - File Format

01:19:11 - JPEG Quality

01:19:54 - Aspect Ratio

01:20:05 - Long Exposure NR

01:20:31 - Hight ISO NR

01:20:51 - Color Space

01:20:58 - Lens Comp.

01:21:40 - Scene Selection

01:22:09 - Bracket Settings

01:22:49 - Interval Shoot Func.

01:23:43 - Memory Recall

01:26:29 - Priority Set in AF-S

01:27:03 - Focus Area

01:27:07 - Focus Area Limit

01:27:42 - Switch V/H AF Area

01:28:17 - AF Illuminator

01:28:37 - AF w/Shutter

01:28:51 - Pre-AF

01:29:04 - Eye-Start AF

01:29:22 - Del. Refits. AF Area

01:29:27 - AF Area Auto Clear

01:29:38 - Disp. cont. AF area

01:29:51 - Cir. Of Focus point

01:30:14 - AF Micro Adj.

01:30:53 - Face Priority in Multi Metering

01:31:04 - Spot Metering Point

01:31:12 - Exposure step

01:31:21 - AEL w/ shutter

01:31:29 - Exposure Std. Adjust

01:31:44 - Flash Mode

01:33:05 - Priority set in AWB

01:33:20 - DRO/Auto HDR

01:33:40 - Creative Style

01:34:21 - Picture Effect

01:34:35 - Picture Profile

01:35:02 - Shutter AWB Lock

01:35:45 - Face Registration

01:36:29 - Exposure Mode Video

01:37:09 - Video File Format

01:37:38 - File Format

01:39:23 - S&Q settings

01:40:01 - Proxy settings

01:40:55 - Af drive speed

01:41:14 - Auto Slow Shutter

01:41:32 - Audio Recording

01:42:47 - Marker Display

01:43:10 - Movie w/Shutter

01:43:20 - Silent Shutter

01:44:38 - e-Front Curtain Shutter

01:45:06 - Release w/o Lens

01:45:30 - SteadyShot settings

01:46:13 - zoom setting

01:47:27 - Display Button

01:47:49 - FINDER/MONITOR

01:48:23 - FINDER Frame Rate

01:48:28 - Zebra Settings

01:49:03 - Exposure Set. Guide

01:49:18 - Live View Display

01:50:00 - Auto Review

01:50:09 - Custom Key

01:50:22 - Function Menu Set.

01:50:38 - My Dial Settings

01:51:39 - Av/Tv Rotate

01:52:05 - Func. Of Touch Operatior

01:52:40 - Network Tab

01:52:58 - Playback Tab

01:59:12 - Touch Panel/Pad

01:59:40 - TC/UB Settings

01:59:48 - IR Remote Ctrl

02:00:02 - HDMI Settings

02:00:54 - 4K Output

02:01:10 - USB Connection

02:01:43 - PC Remote Settings

02:02:42 - Format

02:03:41 - File Number

02:05:16 - My Menu Settings

02:07:36 - WiFi Setup / Imaging Edge App

02:13:44 - Michael's Gear Recommendations for Beginners







Sony A6600

Profile Landscape - my favorite picture when I...

Profile Landscape - my favorite picture when I tried out @lindsayadler_photo Magic of Gels technique. I also did a review of her course which I enjoyed very much! Link in Bio- #lindsayadler #strobes #canon #canon90D