645D vs Nikon D3x, What should we test?

phonoline · 07-17-2011, 03:57 AM

I once worked with the D3X and loved it. Very fast, very easy to handle. I usually work with the D700 but I also started using the 645D for portraits - resolution and sharpness are just plain stunning with the FA 75mm 2.8 or the 67 100mm Macro lens. The big disadvantage, though, is that the 645D is incredibly slow, its automatic white balance is plain horror and that the preview is not very accurate. Maybe that's the price you pay for the sharpness and detail you get.

Last edited by phonoline; 07-17-2011 at 05:09 AM.

Yamanobori · 07-17-2011, 08:46 AM

I find the auto WB very good as well as the preview...

Zygonyx · 07-17-2011, 09:34 AM

I think the same, at least in outdoor photo.
But imho, using only JPeg files with such a camera will never deserve the money you have put in buying it.

Yamanobori · 07-17-2011, 09:42 AM

Originally posted by Zygonyx

But imho, using only JPeg files with such a camera will never deserve the money you have put in buying it.

??? I shot raw and ACR defaults to the WB settings the camera used to take the picture. I very rarely have to change it. Nothing to do with jpeg.

phonoline · 07-17-2011, 09:51 AM

I use ACR (5.x), too, and I still think, the auto WB sucks. I am talking indoor or flash, however, not outdoor. It's fine outside.

I only shoot RAW. The compression of the JPG the 645D generates sucks, too.

Yamanobori · 07-17-2011, 10:04 AM

Auto WB always "sucks" indoors or with flash regardless of the camera. Especially if the flash has a strong IR component.

Andi Lo · 07-17-2011, 09:26 PM

Originally posted by rhodopsin

Aw come on!

At least give the Nik a chance by using a prime!

The 14-24 from Nikon is possibly (one of?) the best fullframe wide angle lens in existence though, so I think it's sort of fair.

**Fontan** · 07-20-2011, 08:55 PM - **1 Like**

Originally posted by Raffwal

Drop test Here's a possible test scenario.

Don't be silly. 645D is so rugged that it can be dropped from about 18 meters (18,000cm) high and still work properly, if not better. With this in mind, 645D with A* 300/f attached can be thrown with a perfect spiral. If you really stop and think about it, that is quite amazing because some of the K-5s cannot function normally even if they are not dropped and thrown at all.

JohnBee · 07-20-2011, 08:59 PM

Originally posted by Fontan

Don't be silly. 645D is so rugged that it can be dropped from about 18 meters (18,000cm) high and still work properly, if not better.

LOL

rhodopsin · 07-21-2011, 10:17 AM

Originally posted by Andi Lo

The 14-24 from Nikon is possibly (one of?) the best fullframe wide angle lens in existence though, so I think it's sort of fair.

+1 but here 35mm needs every advantage.

as corollary the task of selecting a better Nikkor prime seems somewhat daunting...

wkkato · 07-21-2011, 11:36 PM

I heard from Thom Hogan that Chuck Norris had a hand in designing the 645D (but only one hand mind you!)

**Fontan** · 07-22-2011, 12:55 PM

I would like to know which camera is preferred by attractive females.

Zygonyx · 07-23-2011, 01:10 AM

LOL ! I guess it will depend on the optics fixed on it.

spacevoid8 · 08-26-2011, 11:32 AM

Originally posted by Adam

I'm delighted to be in possession of both the 645D as well as the Nikon D3x "Digital Masterpiece" this week, and we'll soon be conducting an in-depth comparison between the two, with a focus on pro features - and which is better for what purposes. We'll also be going over some of the 645D's highlights on the homepage

In the meantime, I'll be happy to entertain any questions about the cameras' features, or perform any user-requested tests in addition to what we have planned. I'm all ears!

when can we expect complete review of both cameras?

Adam · 08-26-2011, 01:50 PM

We're not reviewing the D3x, but the comparison will be posted in 1-2 months.

08-26-2011, 01:50 PM	#75
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,593 Original Poster	We're not reviewing the D3x, but the comparison will be posted in 1-2 months. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
FA 35mm F3.5 test with 645d	sergiolov	Pentax Medium Format	39	05-14-2011 08:44 PM
Test Reports on 645D, K-5 and K-r	ogl	Pentax News and Rumors	4	12-13-2010 05:18 AM
645D test images	Billgscott	Pentax News and Rumors	6	12-13-2010 01:04 AM
645D vs Nikon D3x	steve perry	Pentax Medium Format	20	12-05-2010 06:16 PM
Nikon D3x vs Leica S2 lens mount	jogiba	Canon, Nikon, Sony, and Other Camera Brands	0	01-06-2010 12:10 PM

07-17-2011, 03:57 AM	#61
phonoline Senior Member Join Date: Jun 2010 Location: Hamburg Posts: 267	I once worked with the D3X and loved it. Very fast, very easy to handle. I usually work with the D700 but I also started using the 645D for portraits - resolution and sharpness are just plain stunning with the FA 75mm 2.8 or the 67 100mm Macro lens. The big disadvantage, though, is that the 645D is incredibly slow, its automatic white balance is plain horror and that the preview is not very accurate. Maybe that's the price you pay for the sharpness and detail you get. Last edited by phonoline; 07-17-2011 at 05:09 AM.

07-17-2011, 08:46 AM	#62
Yamanobori Veteran Member Join Date: Feb 2011 Photos: Gallery Posts: 573	I find the auto WB very good as well as the preview...

07-17-2011, 09:34 AM	#63
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,032	I think the same, at least in outdoor photo. But imho, using only JPeg files with such a camera will never deserve the money you have put in buying it.

07-17-2011, 09:42 AM	#64
Yamanobori Veteran Member Join Date: Feb 2011 Photos: Gallery Posts: 573	Originally posted by Zygonyx But imho, using only JPeg files with such a camera will never deserve the money you have put in buying it. ??? I shot raw and ACR defaults to the WB settings the camera used to take the picture. I very rarely have to change it. Nothing to do with jpeg.

07-17-2011, 09:51 AM	#65
phonoline Senior Member Join Date: Jun 2010 Location: Hamburg Posts: 267	I use ACR (5.x), too, and I still think, the auto WB sucks. I am talking indoor or flash, however, not outdoor. It's fine outside. I only shoot RAW. The compression of the JPG the 645D generates sucks, too.

07-17-2011, 10:04 AM	#66
Yamanobori Veteran Member Join Date: Feb 2011 Photos: Gallery Posts: 573	Auto WB always "sucks" indoors or with flash regardless of the camera. Especially if the flash has a strong IR component.

07-17-2011, 09:26 PM	#67
Andi Lo Veteran Member Join Date: Jul 2008 Location: Halifax, Nova Scotia Posts: 2,924	Originally posted by rhodopsin Aw come on! At least give the Nik a chance by using a prime! The 14-24 from Nikon is possibly (one of?) the best fullframe wide angle lens in existence though, so I think it's sort of fair.

07-20-2011, 08:55 PM - 1 Like	#68
Fontan Site Supporter Join Date: Jan 2011 Location: 5th floor Posts: 1,610	Originally posted by Raffwal Drop test Here's a possible test scenario. Don't be silly. 645D is so rugged that it can be dropped from about 18 meters (18,000cm) high and still work properly, if not better. With this in mind, 645D with A* 300/f attached can be thrown with a perfect spiral. If you really stop and think about it, that is quite amazing because some of the K-5s cannot function normally even if they are not dropped and thrown at all.

07-20-2011, 08:59 PM	#69
JohnBee Veteran Member Join Date: Sep 2008 Location: Newrfoundland Photos: Albums Posts: 4,667	Originally posted by Fontan Don't be silly. 645D is so rugged that it can be dropped from about 18 meters (18,000cm) high and still work properly, if not better. LOL

07-21-2011, 10:17 AM	#70
rhodopsin Veteran Member Join Date: Dec 2009 Location: Deep Forest Posts: 643	Originally posted by Andi Lo The 14-24 from Nikon is possibly (one of?) the best fullframe wide angle lens in existence though, so I think it's sort of fair. +1 but here 35mm needs every advantage. as corollary the task of selecting a better Nikkor prime seems somewhat daunting...

Thread Tools	Search this Thread
	Search this Thread: Advanced Search

07-21-2011, 11:36 PM	#71
wkkato Forum Member Join Date: Sep 2009 Location: Irvine Posts: 53	I heard from Thom Hogan that Chuck Norris had a hand in designing the 645D (but only one hand mind you!)

07-22-2011, 12:55 PM	#72
Fontan Site Supporter Join Date: Jan 2011 Location: 5th floor Posts: 1,610	I would like to know which camera is preferred by attractive females.

07-23-2011, 01:10 AM	#73
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,032	LOL ! I guess it will depend on the optics fixed on it.

08-26-2011, 11:32 AM	#74
spacevoid8 Forum Member Join Date: May 2011 Location: Russia/Moscow Posts: 55	Originally posted by Adam I'm delighted to be in possession of both the 645D as well as the Nikon D3x "Digital Masterpiece" this week, and we'll soon be conducting an in-depth comparison between the two, with a focus on pro features - and which is better for what purposes. We'll also be going over some of the 645D's highlights on the homepage In the meantime, I'll be happy to entertain any questions about the cameras' features, or perform any user-requested tests in addition to what we have planned. I'm all ears! when can we expect complete review of both cameras?