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Thread: I just wrote up my experiences with the Pentax 645z

  1. #51
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by voidshatter View Post
    Assault rifles exist as the main combat weapon for a reason - otherwise one would only need sniper rifles / shotguns / pistols or other slow weapons. The American way of war is to shoot as many bullets as possible to hit the enemy.
    Ok, that's pretty hilarious, but also wrong in that assault rifles are somehow faster than any other type of weapon, rather they have a good balance of features I would say - consider the following points:

    1. Most sniper rifle designs are based on, or converted from assault rifles, and can be made to shoot just as fast if you wanted to. Even the Barrett M107 is a semi-auto.

    2. The AA-12, USAS and after-market Saiga shotguns can hold up to 20-32 rounds and pummel an area on full auto, emptying their mags in 4-5 seconds flat. Load grenade rounds and there'll be nothing left.

    3. Pistols and submachine guns can both feature full/burst fire, are far easier to conceal, and their small size allows them to be effectively used indoors, which is how most wars are now fought - on a close-quarters basis, rather than an open field.

    4. Even heavy machine guns can only be fired in short 3-second bursts before they start to overheat. While Rambo may have taught you otherwise, an overheated barrel, besides being a dangerous thing in it's own right, may start firing off shots on it's own and furthering it's demise; this is called a "runaway gun". As a result, machine guns must absolutely be used in pairs at the very least, so that they can take turns laying down the lead.

    5. Even if a weapon can fire tons of shots really fast, they are almost never used that way. It's a waste of ammo, does nothing for your ability to hit the target, and simply pisses everyone off.
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  2. #52
    Senior Member Chris Giles's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Kolor-Pikker View Post
    Ok, that's pretty hilarious, but also wrong in that assault rifles are somehow faster than any other type of weapon, rather they have a good balance of features I would say - consider the following points:

    1. Most sniper rifle designs are based on, or converted from assault rifles, and can be made to shoot just as fast if you wanted to. Even the Barrett M107 is a semi-auto.

    2. The AA-12, USAS and after-market Saiga shotguns can hold up to 20-32 rounds and pummel an area on full auto, emptying their mags in 4-5 seconds flat. Load grenade rounds and there'll be nothing left.

    3. Pistols and submachine guns can both feature full/burst fire, are far easier to conceal, and their small size allows them to be effectively used indoors, which is how most wars are now fought - on a close-quarters basis, rather than an open field.

    4. Even heavy machine guns can only be fired in short 3-second bursts before they start to overheat. While Rambo may have taught you otherwise, an overheated barrel, besides being a dangerous thing in it's own right, may start firing off shots on it's own and furthering it's demise; this is called a "runaway gun". As a result, machine guns must absolutely be used in pairs at the very least, so that they can take turns laying down the lead.

    5. Even if a weapon can fire tons of shots really fast, they are almost never used that way. It's a waste of ammo, does nothing for your ability to hit the target, and simply pisses everyone off.
    Pentax 645z review to Heavy Machine Guns in 51 posts.
    Chris Giles Photography
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Chris Giles View Post
    Pentax 645z review to Heavy Machine Guns in 51 posts.
    No disrespect to wedding shooters but you sure are a touchy bunch - seems here, dpreview etc, etc! Lets just say you all have your own methods and if its been a successful one, who cares what the next man (usually) does with their camera?

    Back OT, I enjoyed very much the review from your perspective Chris and some beautiful pictures to boot. In light of the New Canon stuff coming, (50Mpix?) making it even more interesting especially as you already shoot with Canon.
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  4. #54
    Senior Member Chris Giles's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by gazwas View Post
    No disrespect to wedding shooters but you sure are a touchy bunch - seems here, dpreview etc, etc! Lets just say you all have your own methods and if its been a successful one, who cares what the next man (usually) does with their camera?

    Back OT, I enjoyed very much the review from your perspective Chris and some beautiful pictures to boot. In light of the New Canon stuff coming, (50Mpix?) making it even more interesting especially as you already shoot with Canon.
    Thanks Gaz, the new 5Dr excites me but not without a tinge of worry. If the specs are correct on one hand it'll be a great camera for those already invested in Canon but on the other...that's a lot of pixels for a 35mm sensor.

    Only time and real world testing will tell. I'll be upgrading my 5D3 to the 5Dr as part of a natural kit progression but my real interest is if the rumor of a 50mp medium format rangefinder from Sony comes to fruition.

    If Sony does pull one out I might reconsider my investment in Canon as a system.
    Chris Giles Photography
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Chris Giles View Post
    If Sony does pull one out I might reconsider my investment in Canon as a system.
    Which makes your decision to go all out on the Pentax, regardless of how brilliant it is even more strange for all us others currently sitting on the fence watching the Sony/MFD CMOS collective/Canon shake up unfolding as predicted.......

  6. #56
    Senior Member Chris Giles's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by gazwas View Post
    Which makes your decision to go all out on the Pentax, regardless of how brilliant it is even more strange for all us others currently sitting on the fence watching the Sony/MFD CMOS collective/Canon shake up unfolding as predicted.......
    Not really. The high mp canon has been coming for two years and the sony is just a rumor. Much like the new phase one body.

    I'd prefer to have a camera I can use now than waste a season waiting on vapourware.

    I need something medium format and with an optical viewfinder. If a Sony MF exists then it'll probably be evf. The only way I'd go to a body with an evf is if it had a global shutter. FWIW Scott Robert Lim swears Sony have a global shutter on the way. I never said I was dumping canon. There are certain strengths in their system, like their rectilinear 14mm for one that would keep me around.

    The Pentax is one of two systems I intend to use. Canon (or Sony) being the other. Currently it's canon. Pentax was my replacement for all that I used my Hasselblad for but now I can use it for my wedding work too. Just not exclusively.
    Chris Giles Photography
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Chris Giles View Post
    Not really. The high mp canon has been coming for two years and the sony is just a rumor. Much like the new phase one body.

    I'd prefer to have a camera I can use now than waste a season waiting on vapourware.
    While I know 50Mpix is a lot for a 35mm chip and the Pentax really, REALLY tempts me I decided to sit this out and compare what the 35mm cameras can do at the same resolution (and at what cost). We knew they were coming early 2015 back in November/December. As for the Phase One, I finally gave up on them last year after being a loyal customer since 1999 so not bothered about their fictitious camera any longer.

    Should be a really interesting year for gear sluts this year...

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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Chris Giles View Post
    Thanks Gaz, the new 5Dr excites me but not without a tinge of worry. If the specs are correct on one hand it'll be a great camera for those already invested in Canon but on the other...that's a lot of pixels for a 35mm sensor.
    At first I thought "dang and I just bought the Z" but then the ISO6400 gave me pause, even though it's claimed to go to 12,800 as well. The Z is extremely clean at 12k and it only takes ~20 points in luminance NR to take the noise down to an acceptable level... cleaner than my 5D2 was at 3200.

    I'm pretty sure a lot of 24 & 17 TS-E users will be ecstatic though.
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  9. #59
    Senior Member Chris Giles's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    We're in a golden age for camera design and development that's for sure.

    I love knowing long term when my body starts to age that I'll be able to pick really excellent lightweight systems and continue to enjoy my work. You can do it already with an A7 but in 10 years it'll be a whole different landscape and it's really exciting.
    Chris Giles Photography
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Chris Giles View Post
    We're in a golden age for camera design and development that's for sure.

    I love knowing long term when my body starts to age that I'll be able to pick really excellent lightweight systems and continue to enjoy my work. You can do it already with an A7 but in 10 years it'll be a whole different landscape and it's really exciting.
    Meanwhile I think it's kind of cool having the largest backpack in the group when going on a hike. 13.5kg MFD gear...

    On the other hand, if lenses are going in the Otus direction, ie more and more complex to deliver pixel peep joy to high density sensors, gear won't be lightweight...

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    Senior Member ErikKaffehr's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    I'm in competion, 18 kg including tripod, but I also carry a 135 kit… and don't walk very far.

    Regarding the Otus, it is very large but that is probably due to the large aperture and the Distagon design. Sony has a 55/1.8 which is almost as sharp but quite small.

    The Otus is extremely sharp, even in the corners sharp enough to show moiré at full aperture in the corners of a 36 MP sensor.


    The caption says edge but it really corner:


    I might ending up buying the Otus 85/1.4. I really want a large aperture 85 that is sharp across at full aperture. I would be more than happy with an 85/2 performing like the Zeiss 135/2.0 APO. I don't feel 135 mm is working for me.

    Best regards
    Erik

    Quote Originally Posted by torger View Post
    Meanwhile I think it's kind of cool having the largest backpack in the group when going on a hike. 13.5kg MFD gear...

    On the other hand, if lenses are going in the Otus direction, ie more and more complex to deliver pixel peep joy to high density sensors, gear won't be lightweight...
    Last edited by ErikKaffehr; 2nd February 2015 at 09:53.

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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Chris Giles View Post
    Pentax 645z review to Heavy Machine Guns in 51 posts.
    ...and yet poor information/analogies being spewed about both machine guns and cameras
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Chris Giles View Post
    Hi everyone, for any that are interested I just published a series of posts on the Pentax 645z.

    It isn't hugely technical but covers weddings and portraiture, CCD vs CMOS, Dynamic range, Image quality, Weatherproofing and the Flash solutions.

    If after reading you want to know anything else I've otherwise missed please ask away in the comments.

    Pentax 645z Review by Chris Giles Chris Giles Photography Blog
    Chris, I was remiss in not complimenting you on your photography including your wedding images ... no matter what was used or how you used it.

    My only disconnect was depicting volume of images as a necessary tactic to arrive at insightful work ... more by other's comments than yours.

    My parting comment is one from a favorite photographer who inspired me in my own efforts to be discriminating and decisive ... sometimes to good result, sometimes not

    “It’s about reacting to what you see, hopefully without preconception. You can find pictures anywhere. It’s simply a matter of noticing things and organizing them. You just have to care about what’s around you and have a concern with humanity and the human comedy. ” - Elliott Erwitt

    All the best,

    - Marc

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    Re: I just wrote up my experiences with the Pentax 645z

    Chris
    Thanks for all your hard work on this camera. I have used one and like your first experience had a hard time sending it back.

    Lens questions.

    I see you often use the 150. Have you tried the V Hassy 150 with adapter on the 645Z? I see MThein liked it although it seems he does not currently own a 645Z. Also doesn't the cropped size of the 645Z sensor versus the old Hassy V bodies make the Hassy lenses actually longer by some percent? Or do I have this wrong?

    Is the quality of the 75/2.8 OK or would you say the 55/2.8 is much better.

    Some like the new 90/2.8 macro which could be a nice portrait lens I guess. Have you had a chance to try this lens?

    Thanks.

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    Re: I just wrote up my experiences with the Pentax 645z

    Bump to Chris. TIA for your reply.

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    Senior Member Chris Giles's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by algrove View Post
    Chris
    Thanks for all your hard work on this camera. I have used one and like your first experience had a hard time sending it back.

    Lens questions.

    I see you often use the 150. Have you tried the V Hassy 150 with adapter on the 645Z? I see MThein liked it although it seems he does not currently own a 645Z. Also doesn't the cropped size of the 645Z sensor versus the old Hassy V bodies make the Hassy lenses actually longer by some percent? Or do I have this wrong?

    Is the quality of the 75/2.8 OK or would you say the 55/2.8 is much better.

    Some like the new 90/2.8 macro which could be a nice portrait lens I guess. Have you had a chance to try this lens?

    Thanks.
    Hi Algrove, I've not used any V lenses with this. The smaller sensor will make a lens longer. So the 90mm Macro you mentioned will have the reach of something more like a 100mm.

    I would say based on the prime lenses all are equally excellent with little between each although the 150 and 200 have fringing if you blow the highlights. The 200 being much worse than the 150 in this regard. The zooms are very good too.

    I've not had the chance to use the 90mm either but I've heard it's a legend in the making. I tried contacting Mark Cheetam at Ricoh UK a couple of times now in order to see how I can work better with Pentax but I've not had a reply from him and have since stopped trying.

    On this basis it's unlikely I'll be able to pass comment on the 90mm Macro, 28-45 Zoom or any upcoming lenses because I have (for the most part) lenses that cover this range and they're a big outlay to buy on a whim.
    Last edited by Chris Giles; 2nd March 2015 at 15:17.
    Chris Giles Photography

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    Re: I just wrote up my experiences with the Pentax 645z

    Thanks for the reply Chris.

    I have used the Canon 5D3 and 70-200 for portraiture work in the past. Based on using the 645Z, I am now hoping the 80-160 can suffice in similar situations, but find most prefer the 150/2.8 for portait work as it is stellar. I read that the high end of the 80-160 is the weakest end, with the 80-100 range being the best.

    Any findings/comments about this on your end?

  18. #68
    Senior Member Chris Giles's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by algrove View Post
    Thanks for the reply Chris.

    I have used the Canon 5D3 and 70-200 for portraiture work in the past. Based on using the 645Z, I am now hoping the 80-160 can suffice in similar situations, but find most prefer the 150/2.8 for portait work as it is stellar. I read that the high end of the 80-160 is the weakest end, with the 80-100 range being the best.

    Any findings/comments about this on your end?
    I would stick with the 150mm myself but I've not really had any issues with the 80-160. It's not something I would use for portraiture. My preference is to the 120 Macro or the 150mm.

    I guess it depends on how much you feel certain elements affect your images. A prime is always nicer than using a zoom imho but if you are used to using them then the 80-160 is very good. However it is a lens with production variance. I had one that wasn't as good as the second one I bought but what I have now is exceptionally sharp and renders very well.

    I still won't use it for headshots though, although I may do today for my 4.45
    Chris Giles Photography

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    Senior Member Chris Giles's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    Here you go, 160mm on the 80-160
    (Handheld, ISO 10,000, F4.5, 1/200 sec)
    Chris Giles Photography

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    Re: I just wrote up my experiences with the Pentax 645z

    Thanks for the review! I too am looking at the Z for my wedding and portrait work. I currently shoot film alongside digital Nikons. The Z will more closely match my 645 film images in rendering which is what makes it attractive. Plus 4:3 > 3:2 for my work.

    My question is how now has the Z fit into your workflow along side your digital 35mm system? Do you find that you use the Z more than those cameras or is it really just for the most important images of the day? Also how has the 50mp file fit into your workflow?

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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Speedgraphic View Post
    My question is how now has the Z fit into your workflow along side your digital 35mm system? Do you find that you use the Z more than those cameras or is it really just for the most important images of the day? Also how has the 50mp file fit into your workflow?
    Good question.

    Right now I'll be using it as a main body. I'll be perfectly frank here, I can see myself depending on it more and more. Certain things like inside a church, the ceremony or the dance floor shots I think I'll still settle on the 5DSr on launch.

    The 1Dx though, that's looking like it'll be on it's way out.

    The nice thing to note though is that I shoot interiors (sometimes) and I need the ultra wide angle, the new 11-24L combined with a 5DSr will be a perfect combo with the 645z. I still prefer to stitch and shoot longer where possible and I've only just discovered the program PTgui which stitches so much better than photoshop.

    I'm starting to ramble off course a bit. I don't think I'll go exclusively Pentax, but 75% of the wedding for sure. Some things like truly silent operation is needed (like the ceremony) and good low light AF (dancefloor) will need the Canon kit.
    Chris Giles Photography

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    Re: I just wrote up my experiences with the Pentax 645z

    From the point of view of a more average user, the Z has almost entirely replaced my Canon kit as a general-purpose camera, and once Pentax outs a stabilized standard zoom I'll be all-in. I can still see myself using a smaller format for those rare times I need fast and discreet shooting.

    My 2011 iMac is definitely feeling the burn when working the files in Lightroom or Photoshop, so it's high time I upgraded to something with SSDs and USB3. And more storage. Oh, look at that, only 16 shots on the card? 1GB already used up. ~520 shot capacity on a 32gig card, they didn't put in two slots for nothing. Make sure your computer is up to snuff is what I'm saying.

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    Re: I just wrote up my experiences with the Pentax 645z

    So basically it's exactly what I'm looking for. I was afraid you'd say that. :-)

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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Kolor-Pikker View Post
    From the point of view of a more average user, the Z has almost entirely replaced my Canon kit as a general-purpose camera, and once Pentax outs a stabilized standard zoom I'll be all-in. I can still see myself using a smaller format for those rare times I need fast and discreet shooting.

    My 2011 iMac is definitely feeling the burn when working the files in Lightroom or Photoshop, so it's high time I upgraded to something with SSDs and USB3. And more storage. Oh, look at that, only 16 shots on the card? 1GB already used up. ~520 shot capacity on a 32gig card, they didn't put in two slots for nothing. Make sure your computer is up to snuff is what I'm saying.
    Thanks! I'm using a fully spec'd but still 2009 i7 iMac. It needs to be replaced with the new 5k. But man-o-man we're talking new iMac cost and new Pentax cost. This is going to hurt. I might just have to wait on one or the other honestly. Too many upgrades at one time.

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    Re: I just wrote up my experiences with the Pentax 645z

    Last question!

    How have you found the AF? Can it reliably track a slow moving target, and how is it back lit?

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    Senior Member Chris Giles's Avatar
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    Re: I just wrote up my experiences with the Pentax 645z

    Quote Originally Posted by Speedgraphic View Post
    Last question!

    How have you found the AF? Can it reliably track a slow moving target, and how is it back lit?
    It's very good. I tried it with a model walking towards me in the woods, a same sex couple walking away from me and a couple of newly weds walking towards me from the church.

    Only thing that trips it up is that the af points are close together, so any creative framing goes out of the window.
    Chris Giles Photography

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