Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-21-2012, 10:31 PM   #241
Veteran Member




Join Date: Feb 2011
Posts: 4,893
It's odd - but the Tamron 90mm feels lighter than the Pentax 100mm. Not true of course, it's just a perception of density thing.

As was mentioned prior, the D800 isn't that much heavier than the Pentax - 900 g vs. 740 g. At that point it comes down to lenses, and of course you can use slower lenses and higher ISO for equivalent images if you're critical on weight (as I am).

05-22-2012, 12:13 AM   #242
gtl
Veteran Member




Join Date: Feb 2010
Posts: 349
Why the comparison between gripped and ungripped cameras?? Add a grip to the D800 and the weight advantage disappears.
05-22-2012, 12:18 AM   #243
Veteran Member
bossa's Avatar

Join Date: Jul 2011
Location: Adelaide
Posts: 4,546
Sorry, I deleted my previous post.

I can't see a reason for putting a grip on the 800 frankly. I only have a grip on my K-5 for the longer lenses and when I tried a 70-200 zoom on the 800 it felt fine without a grip as it's bigger in that area anyway.

Slightly better shots:





Last edited by bossa; 05-22-2012 at 12:23 AM.
05-22-2012, 12:21 AM   #244
Veteran Member
bossa's Avatar

Join Date: Jul 2011
Location: Adelaide
Posts: 4,546
When I use a longer lens on the K-5 without a grip I always feel like I'm going to drop it. It's fine with smaller lenses though.

05-22-2012, 12:36 AM   #245
Pentaxian




Join Date: Oct 2009
Location: North
Photos: Gallery
Posts: 3,921
QuoteOriginally posted by ElJamoquio Quote
Well, we'll see. Perhaps the extreme response for the D800 at $3k will make them think twice about releasing another camera that's such a great value. To me, though, it seems unlikely that they would unveil a 'stripper' model when the D700 is $2200 *right now*.

I guess we could put it this way - for $2300 you can have the D700 with the nikon 50mm f/1.8 RIGHT NOW.

For $2100, you can have the k5 with the 31mm f/1.8 RIGHT NOW. This is basically a wash.

Which do you think is the better tool?
In theory only, and it depends on what the user needs for the photography he/she does.

The total encumbrance of DA15, DA35/2.4, DA70 (or the new 50/1.8) with this new K30 or K5 is certainly much less than a FF D700/D800 with equivalent lenses.
As a system in real world travel/outdoor use, its certainly less of a strain.
The advantage of shallow DOF shots is overated especially for travel/macro/birding/landscapes.
05-22-2012, 12:44 AM   #246
Pentaxian




Join Date: Oct 2009
Location: North
Photos: Gallery
Posts: 3,921
QuoteOriginally posted by bossa Quote
Sorry, I deleted my previous post.

I can't see a reason for putting a grip on the 800 frankly. I only have a grip on my K-5 for the longer lenses and when I tried a 70-200 zoom on the 800 it felt fine without a grip as it's bigger in that area anyway.

Slightly better shots:





Not meant to be offensive but do o you really have to do this here/now?
ie. Pour water on the happy mood as well as make a smaller K5 larger with a grip.
At least with the K5 you have a choice to be smaller

Lug the whole system around for days on foot, getting on crowded public transport, pushing through crowded streets and a smaller system like K5 makes a lot of sense.
05-22-2012, 12:54 AM   #247
Senior Member
french_mike's Avatar

Join Date: Mar 2012
Location: Ireland and France
Posts: 167
it was not suppose to be 2 camera reveals and the 50mm ?
05-22-2012, 12:57 AM   #248
Veteran Member




Join Date: Dec 2010
Location: Manila
Photos: Gallery | Albums
Posts: 2,190
QuoteOriginally posted by Emacs Quote
All I know Nikon D600 + 50/1.8G will be much cheaper compared to K-5 successor + 31Ltd. With significantly better IQ.
Sorry to say this, but...
Cheaper, high possibility. Significantly better IQ compared to K-5 successor + FA31? I'd like to see scientific comparison samples first before I make any judgments. As of now, both cameras are non-existent in the market- they may be in the prod lines already, but nobody's tested them yet, so I will reserve opinions until they both come out.

05-22-2012, 01:01 AM   #249
Veteran Member
bossa's Avatar

Join Date: Jul 2011
Location: Adelaide
Posts: 4,546
People keep saying how small the K-5 is and how heavy the nikon is...I was responding to an earlier post. I can delete my post if you want.

Quite a number of people here use Sigma 70-200 zooms which are almost as heavy as the Nikon one and the DA60-250 with gripped K-5 is only about 200 to 300 G's less in weight (And bigger) than the D800 and 70-200VRII.

I am sorry if I went OT but I thought it was valuable info
05-22-2012, 01:25 AM   #250
Veteran Member




Join Date: Feb 2011
Posts: 4,893
QuoteOriginally posted by pinholecam Quote
In theory only, and it depends on what the user needs for the photography he/she does.

The total encumbrance of DA15, DA35/2.4, DA70 (or the new 50/1.8) with this new K30 or K5 is certainly much less than a FF D700/D800 with equivalent lenses.
As a system in real world travel/outdoor use, its certainly less of a strain.
The advantage of shallow DOF shots is overated especially for travel/macro/birding/landscapes.
Sure! So then instead of using a 15mm f/4 wide open, you can use a 24mm at f/5.6 or higher. Surely 'even a sigma' lens is pretty good at those apertures. Instead of the 35 on APSC you can use a $125 50mm f/1.8, and have way more flexibility DOF-wise. Instead of lugging around the extra DA70 you can use the 50mm f/1.8 and crop (and again have more DOF options, to boot).

Is the encumbrance really all that much worse, the D800 + 2 lenses, compared to the K5 and 3 lenses? Could it be better with the D800?
05-22-2012, 01:25 AM   #251
Pentaxian
Emacs's Avatar

Join Date: Oct 2010
Location: Moscow
Posts: 1,221
QuoteOriginally posted by Pål Jensen Quote
ble cheaper than any Nikon FF with a 75/1.8 lens....
75mm? Bizzarre FL: a little too short for portraits, too long for general purpose lens
What about nikon 85 f1.8G for $500 vs pentax da* 55 for $800 (and in fact da*55 performs worse than even more cheap 85 f1.8D on FF)?

BTW, many here suppose APS-C lenses are more compact than their FF counterparts. It's not true. The actual size depends on FOV. Wider lenses are typically lighter and smaller on FF. APS-C lenses become lesser than FF since short tele range.

But I don't think it's good idea to stick with any DSLRs these days. It's only matter of short time when japanese will learn what S-transform is and implement proper image-based AF methods, instead of contrast detection. This will eliminate any need in phase detection and thus in DSLR: OVF is not a reason at all, it has some advantages nowdays, but they are too insignificant compared to advantages of EVF (focus assists, overlays, precise 100% coverage, etc).
05-22-2012, 01:29 AM   #252
Pentaxian
Emacs's Avatar

Join Date: Oct 2010
Location: Moscow
Posts: 1,221
QuoteOriginally posted by Alizarine Quote
I'd like to see scientific comparison samples first before I make any judgments
Go to photozone and compare 50mm resolution figures on FF vs 35mm on APS-C, that's it.
To provide better details APS-C lens must have more than 1.5 times resolution of FF lens. And I really doubt 31Ltd has higher resolution than 50/1.8G (I rather think 50/1.8G has 1.5 times more resolution and, that's even more important, superior local contrast)

Last edited by Emacs; 05-22-2012 at 01:39 AM.
05-22-2012, 01:30 AM   #253
Veteran Member
bossa's Avatar

Join Date: Jul 2011
Location: Adelaide
Posts: 4,546
QuoteOriginally posted by pinholecam Quote
In theory only, and it depends on what the user needs for the photography he/she does.

The total encumbrance of DA15, DA35/2.4, DA70 (or the new 50/1.8) with this new K30 or K5 is certainly much less than a FF D700/D800 with equivalent lenses.
As a system in real world travel/outdoor use, its certainly less of a strain.
The advantage of shallow DOF shots is overated especially for travel/macro/birding/landscapes.
It's not about getting thinner DOF. It's about getting the DOF you want at smaller apertures on cheaper, longer focal length lenses.

Consider this:
1. 31mm on APS-C = 46.5 on FF

2. Distance to K-5 is 1 meter

3. to compensate for distance of subject the 50mm lens must be backed off a bit on FF
a) FF with 50mm must be backed off to 1.075 meters (50/46.5 = 1075)

4. a) DOF 31mm f/1.8 at 1.000 meters = 75.89mm
b) DOF 50mm f/2.73 at 1.075 meters = 75.81mm (f/2.8 will have to do DOF = 77.76)

It appears from the above calculations that a cheap 50mm lens on FF can match it with an expensive wide-angle FF lens being used on APS-C. The 50mm is sharper at that aperture so it's not really a fair comparison but is accurate.

Costs:
D800E = $3850 (we pay GST.. or VAT)
Sigma 50 = 500
Total = 4350

K-5 = 1500
31LTD = 1500
Total = 3000

By the time you add more expensive fast lenses to the APS-C system you have ended up (probably) spending more cash. But that hasn't really happened for me because most of my lenses were bought used.

Don't ask me why I did all of that.

Last edited by bossa; 05-22-2012 at 01:43 AM.
05-22-2012, 01:33 AM   #254
Veteran Member




Join Date: Dec 2010
Location: Manila
Photos: Gallery | Albums
Posts: 2,190
QuoteOriginally posted by Emacs Quote
Go to photozone and compare 50mm resolution figures on FF vs 35mm on APS-C, that's it.
For existing cameras and lenses, yes. But for two that aren't even announced yet, how can anyone be so sure? Unless we got insider material or pre-release testing or something...
05-22-2012, 01:46 AM   #255
Veteran Member
bossa's Avatar

Join Date: Jul 2011
Location: Adelaide
Posts: 4,546
Hmm.. gotta wash those curtains. That A720 is showing a bit more detail than I expected.
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!
dslr, forum, full-frame, k3, k30, k5n, pentax news, pentax rumors
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Why full frame? VoiceOfReason Pentax DSLR Discussion 208 07-28-2012 08:09 AM
K5 vs Full Frame KALAIS Pentax K-5 21 09-24-2011 11:25 AM
Pentax and Full Frame... Shutter-bug Photographic Technique 60 11-03-2010 10:03 AM
Pentax A 50/1.2 on Full Frame aegisphan Pentax SLR Lens Discussion 23 10-28-2010 04:16 PM
Photokina 2010, Pentax and the full frame mystery falconeye Pentax News and Rumors 727 09-03-2010 11:11 AM



All times are GMT -7. The time now is 05:33 PM. | 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