Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-17-2010, 07:56 AM   #16
Pentaxian




Join Date: Jul 2009
Location: Seattle
Posts: 7,145
QuoteOriginally posted by bensonga Quote
Maybe a RAID system with several terrabytes and a small Cray supercomputer to process the images.

Now if only the photos I made were worthy of such a setup.

Oh well, fun to dream of it anyways....

Gary
When I scan my 6x7 and 6x6 negatives at 4000dpi, I get over 10,000x8,000 and 8,000x8,000 pixel images. I've been handling it fine both in storage space and editing with an older PowerMac G5 (12GB ram) with not too much of a problem. But I must say I don't do too much editing with them at that size unless I have to. I first scale them down to a more manageable size if they are destine to be an online shot.

Similarly with that large of a digital camera file I'd suspect you'd be scaling them down too for editing unless you're going to be making a very large print.


Last edited by tuco; 03-17-2010 at 07:00 PM.
03-18-2010, 09:35 PM   #17
Forum Member
artemapei's Avatar

Join Date: Nov 2009
Location: Moscow-Guangzhou
Posts: 71
QuoteOriginally posted by bensonga Quote
I know, I know.....I'm just thrilled to see the 645D come to life and will be even more thrilled on the day I can afford to buy one.....but I don't think I'll ever give up the dream of a digital P67. Can you imagine the IQ of a 6x7 sensor?!?! Maybe 60-80 megapixels......some of those big "fat pixels" (9 microns or more).

Gary
80Mp will be at 645 (41.5x56) in 3-4 years

so, 67 sensor (100Mp up at least) will be avail not earlier than in 10 years...
03-28-2010, 05:35 AM   #18
ogl
Pentaxian
ogl's Avatar

Join Date: Dec 2007
Location: Siberia
Photos: Gallery | Albums
Posts: 7,294


03-28-2010, 01:14 PM   #19
Senior Member
bensonga's Avatar

Join Date: Mar 2010
Location: Alaska
Photos: Albums
Posts: 148
Oh man....you're killing me with these photos! :-)

What's the story here? Where'd you get the pics etc? I don't see a P67=>645 adapter on there.

My 645NII arrived last week and I've been using some of my P67 lenses on it. I like those so much, I think I'm going to send the manual focus 645 lenses I purchased back to KEH. I'll just hold out until I can find some of the 645 FA lenses to go with it.

The 645D is moving to the top of my wish list, that's for sure!

Gary

03-28-2010, 01:26 PM   #20
New Member




Join Date: Mar 2010
Location: Barcelona
Posts: 21
QuoteOriginally posted by bensonga Quote
Oh man....you're killing me with these photos! :-)

What's the story here? Where'd you get the pics etc? I don't see a P67=>645 adapter on there.

My 645NII arrived last week and I've been using some of my P67 lenses on it. I like those so much, I think I'm going to send the manual focus 645 lenses I purchased back to KEH. I'll just hold out until I can find some of the 645 FA lenses to go with it.

The 645D is moving to the top of my wish list, that's for sure!

Gary
Click on the photo, properties and voil:

ʐ^Ōy^bNXu645Dvi@j - fWJWatch

A lot of Pentax 645D photos... and yes, there is the 6x7 to 645 adapter.

Ramn
03-28-2010, 02:20 PM   #21
Senior Member
bensonga's Avatar

Join Date: Mar 2010
Location: Alaska
Photos: Albums
Posts: 148
Thanks Ramon.....lots of great photos of the 645D there!

Gary
03-29-2010, 10:21 PM   #22
Veteran Member




Join Date: Jul 2007
Location: Melbourne, Australia
Photos: Gallery
Posts: 394
WOW, i gonna have to get a bib if you keep posting those fotos...... major drool factor.
TFS
Cheers Neil
03-31-2010, 12:20 PM   #23
Site Supporter
Site Supporter
GeneV's Avatar

Join Date: Oct 2008
Location: Albuquerque NM
Photos: Albums
Posts: 9,775
QuoteOriginally posted by tuco Quote
When I scan my 6x7 and 6x6 negatives at 4000dpi, I get over 10,000x8,000 and 8,000x8,000 pixel images. I've been handling it fine both in storage space and editing with an older PowerMac G5 (12GB ram) with not too much of a problem. But I must say I don't do too much editing with them at that size unless I have to. I first scale them down to a more manageable size if they are destine to be an online shot.

Similarly with that large of a digital camera file I'd suspect you'd be scaling them down too for editing unless you're going to be making a very large print.
I do the same thing on an HP laptop with 3gb RAM. My uncropped 6x7 scans at 4000dpi are actually closer to 11,000 x 9000 pixels. It works, and you can even edit a 6x7, but it does chew on a 90-100mp image for a few seconds sometimes. It is much worse in color.

03-31-2010, 04:24 PM   #24
Veteran Member




Join Date: Feb 2010
Location: Fowlmere, UK
Photos: Albums
Posts: 704
Hi Tuco, which scanner do you use?

I've temporarily settled for an Epson 4490 - which will do for the moment. I'm scanning slides I took 10-17 years ago without ever seeing them (as I had no projector for the last 17 years... don't ask). I can see the difference between 35mm and 645 on the 4490, and can only imagine how 6x7 would look like. I'm wondering whether a good medium format scanner should not be on my wish list....

As for the 67D: would that not be overkill? If you can print 2 x 3 meter (meter!) from the 645D, what is there to be gained in a 67 format other than differences in noise etc which I suspect will be dealt with for the smaller sensors as time goes by?
04-01-2010, 10:28 AM   #25
Pentaxian




Join Date: Jul 2009
Location: Seattle
Posts: 7,145
QuoteOriginally posted by Smolk Quote
Hi Tuco, which scanner do you use?
I currently use a 4990 for my LF. Then I picked up a 9000ED for my MF. I saw an improvement in my 4990 scans when I finally purchased some scanning software instead of what it came with using multiple sample scans feature of the new software.
04-11-2010, 02:43 AM   #26
Inactive Account




Join Date: Sep 2009
Location: SoCal
Posts: 1,292
Just a heads up on a hard to find genuine Pentax 645 to 6x7 adapter:

Pentax MF Lens Adapter 645 to 67 6x4.5 6x7 67II 126151 - eBay (item 230458877300 end time Apr-14-10 11:57:19 PDT)

These should get expensive as the 645D starts to sell. Three days left from Sunday on bidding.

(No connection with the offer)
04-11-2010, 06:20 AM   #27
Site Supporter
Site Supporter




Join Date: Feb 2010
Location: Saskatchewan
Posts: 249
sorry, but that one has my name on it as I consider it to be my ticket to longer focal lengths ...
04-11-2010, 06:49 AM   #28
Senior Member




Join Date: Mar 2010
Location: Inside the Blue Banana ;)
Posts: 254
IMHO ist that adapter still available through Pentax - so I doubt that the prices are rising
04-11-2010, 07:57 AM   #29
Veteran Member




Join Date: Feb 2010
Location: Fowlmere, UK
Photos: Albums
Posts: 704
Problem is, I only went for the 645 system because it is still reasonably light. That's not the case with the 67, me finks. Currently, I'm carrying the P645 with some lenses around with my MacBook so as to be able to use it whenever the occasion arises. Yet I noticed, it's much better without the laptop - every pound counts here. So using 67 lenses, while attractive indeed, seems to be self-defeating here unless one does studio work or take the car.
04-11-2010, 08:23 AM   #30
Forum Member




Join Date: Mar 2009
Location: Ventana Wilderness, CA
Posts: 83
Isn't the primary point to using a larger format that it's capable of outresolving the smaller format, not necessarily because lenses are superior (typically, there's an inverse relationship between image circle size and resolution) but due to the sheer amount of real estate covered by the format?

So can anyone tell me exactly which of the P67 lenses are such stellar performers that they're on equal footing with (or exceed the quality of) the equivalent P645 lenses-- when used on 645 format? Any of them?
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
645d, camera, lenses, medium format, pentax 6x7 lenses
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax Medium Format Resources: 645 & 6x7 Cameras and Lenses, 645 & 6x7 Accessories Adam Pentax Medium Format 9 02-12-2017 03:38 AM
Pentax 645D and LS lenses Ramn Pentax Medium Format 25 05-31-2014 09:29 AM
Pentax FF compatible lenses - looking for a list jpzk Pentax SLR Lens Discussion 27 08-23-2010 08:28 AM
Field of View Tables, APS-C, 24x36, 645D, 645, 6x7 Ole Pentax Lens Articles 0 03-14-2010 06:38 PM
Pentax 6x7 Lenses w/ adapter - Worth it? Experiences? cputeq Pentax SLR Lens Discussion 5 07-26-2008 01:36 PM



All times are GMT -7. The time now is 02:52 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top