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Forum: Lens Clubs 03-23-2015, 08:52 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
What a beautiful bride!

I find it hard to resist the temptation to have a go at the flowers during spring........ Pentax A50mm/1:1.2 @ f2 + Helicoid Extension Tube K











Forum: Pentax DSLR Discussion 03-21-2015, 10:44 AM  
Can a hybrid DSLR be done? OVF and EVF in one body...
Posted By schneider
Replies: 27
Views: 4,347
The possibilties are limited compared to a liveview camera. The problem is that the mirror is in the way of the sensor, so the information can't be collected off of the imaging sensor. Therefore one would need to use something like the metering sensor, which can never be as exact as the actual imaging sensor. And obviously the camera should re-calculate the histogram to match the aperture that is chosen. A good optical viewfinder is beautiful, but it comes at a cost.
Forum: Lens Clubs 03-15-2015, 09:45 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Thanks! :-)
Forum: Lens Clubs 03-15-2015, 05:49 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
A bit confusing for not Dutch-speakers..... Just press on 'Stem!'. You are asked for an email address, not to register, but to just once sent an email with a link to confirm the vote. I believe they do this to avoid multiple votes by one person.
Forum: Lens Clubs 03-13-2015, 09:07 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
And another one - also M20/f4



I entered it in a competition as well. So if you'd like to vote....

NRC Fotowedstrijd
Forum: Lens Clubs 03-10-2015, 11:20 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Rush hour - M20/4

Forum: Photographic Technique 02-28-2015, 03:05 AM  
Macro Anyone have a Venus 60mm f2.8 2X macro lens?
Posted By schneider
Replies: 49
Views: 9,129
They are two different things. The reproduction ratio has nothing to do with focal length. With a shorter focal length you have to get closer to get ratio X as compared to a longer lens, but the ratio itself is a given. So if you want to get 1:2 with the DFA 100mm, you'll have to take a shot as close as you can and then crop it to 50% of the original size.
Forum: Photographic Technique 02-27-2015, 10:53 AM  
Macro Anyone have a Venus 60mm f2.8 2X macro lens?
Posted By schneider
Replies: 49
Views: 9,129
Wonderful shots old4570!

One should not forget that for mirrorless/liveview cameras stopped down metering is the norm. Given that such type of camera/usage of the camera will become more and more common, I think many will like the lens. Btw I would think a mirrorless camera with a latest gen EVF would be a better tool for macro then a DSLR anyway, given all facilities with zooming in etc. etc..
Forum: Photographic Technique 02-27-2015, 06:07 AM  
Macro Your opinion of the Pentax -FA 50mm, f: 2.8 macro lens
Posted By schneider
Replies: 18
Views: 3,037
Congrats on your find. It is a very 'sharp' lens and I have the same feeling as old4570, it is 'sharper' then the 100's I've tried. Perhaps even the sharpest Pentax of all. Great built too (I have the F, should be similar). The only downside is the less then great manual focus experience. The reason why I prefer the A100/2.8 macro over the F100/2.8 I also had at some point. I liked the A50/2.8 macro also a lot, but it is 'only' 1:2.
Forum: Lens Clubs 02-19-2015, 06:48 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Nice one Pinholecam

Enjoying spring sun, with the DA*300 stopped down a little. Btw shot through my (notas-clean-as-it-should-be-but-wait-till-after-spring-clean window.

Forum: Lens Clubs 02-16-2015, 07:52 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Fishy shot taken with the A50/1.2 @3.2 or something close. Part of a small set taken in a restaurant - unfortunately the others (some better) I shouldn't post here.

Forum: Pentax K-3 & K-3 II 02-15-2015, 05:36 AM  
Shooting in Manual Mode with Auto ISO
Posted By schneider
Replies: 7
Views: 2,909
A very useful setting. I use it when chasing butterflies using a 100mm macro. I know I have to be around f8 for the necessary dof, 1/500 is the minimum for shutter speed considering my shaky hands and the subject not sitting still. So I set those and let the camera determine the ISO, which is the one variable left. The only concern is too much light, which is solved by upping the shutter speed.

Btw other brands have it too, just not (always) as a separate program setting. On my Sony A7 I use it all the time. Set the program M and ISO to auto. Exposure compensation works too.
Forum: Lens Clubs 02-15-2015, 03:39 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Great work Pinholecam! I agree on the 24/25mm usability. Nice and wide without over-stretching too much.

Btw NIK software is highly recommended (by me anyway :-) ). Can't be missed really (again by me :-) ). Good sharpening option, good de-noise option, good HDR option, good editing option (Viveza), good BW conversion option and finally all the (stackable) filters in Color EFEX Pro. And all with the venerable control points.
Forum: Lens Clubs 02-06-2015, 07:43 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Yesterday night I was in the audience of a photography program on Dutch TV call 'Fotostudio De Jong'. Part of the show was a discussion on selfies. Given the audience was full of photographers (to be invited one needed to send in a picture + story) it is logical that after the show all wanted to make a selfie with the presenter :-).

All with FA43 @ f2.0 (or whatever the click between 1.9 and 2.8 is).







Forum: Lens Clubs 02-05-2015, 09:09 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
^agreed^

And nice rendering of the FA135. That lens will benefit most from the new FF DSLR. Unfortunately my wait is not over, as I prefer a mirrorless option :-(

And as the thread needs some pics, here's one with the FA*24/2

Forum: Sold Items 02-05-2015, 04:06 AM  
For Sale - Sold: Zeiss Distagon T* 2,8/25 ZK
Posted By schneider
Replies: 2
Views: 1,251
Bedankt Franc. Ik had hem al eens op Marktplaats gezet, aannemende dat de meesten van de forumleden dat ook wel zien. Daar kwam echter weinig uit, behalve een paar nep-bieders.
Forum: Sold Items 02-04-2015, 08:27 AM  
For Sale - Sold: Zeiss Distagon T* 2,8/25 ZK
Posted By schneider
Replies: 2
Views: 1,251
PentaxForums.com Marketplace Listing

Item for Sale
Zeiss Distagon T* 2,8/25 ZK

Asking Price
600.00 EUR

Item Location
Amsterdam (Netherlands)

Item Description
For sale a Zeiss Distagon 25mm 2.8 in Pentax mount. The lens has an A setting, so it is possible to set the aperture on the camera and use programs.

The lens is in very good condition in all respects. Very very lightly used (at worst). Beautiful built, aperture ring and focus are a joy to use, just installing the lens shade feels great :). Not only is this enjoyable, but also very effective as the manual focus is much more precise then with a autofocus lens.

Comes with both caps and shade, no box nor paperwork. And I will blow of some of the dust seen on the pictures :-)

Optically this lens is very nice. Very all round. It is an excellent landscape lens with sharpness across the frame into the far corners at 'normal' distances (i.e. further then the test bench setups which are 1,5 meter). Distortion is present, but minor. The colors are very neutral (as compared to the warmish cast of many Pentax lenses) and bokeh is also very neutral (again compared to for instance the FA*24mm I compared against, which has a busy bokeh). Most importantly CA (purple and green discolorations along high contrast borders) is very well controlled (compared again to my FA*24).

A real feature is the incredibly close focus, getting very near the macro realm. Below is a picture of the DA15mm ltd as a reference, a sloppy shot taken with the K5 @2.8. In close focus distance the lens has field curvature and the corner sharpness tends to be weaker. This is what is recorded in internet tests. As can be seen in the samples, close up scenes rarely need sharp corners. For reproduction work a macro lens is the best choice. The focus field flattens with distance.

At all distances the rendering is very detailled, with the so-called micro-contrast. It gives a senses of depth and 'being there'. It is a shame that it is hard to convey this at web size.

I used this lens on full frame, but it works just as well on the Pentax APS-C cameras. The resulting 37mm is perfect for a walk around lens. And it looks stunning on a K5 :-)

Price is 600 euro net to me. So any shipment- or payment charges are to the buyer.









almost macro (full frame):



DA15 @ minimum focus distance @ 2.8 hand held on a K5



some impression of distortion and corner sharpness (full frame):



hard pushed file (full frame):



Are you the original owner of the item being sold?
No

Are you selling or trading this item?
Selling

Item Condition (Key)
Used
Excellent

Shipping Destinations
Worldwide

Shipping Charge
not included, depending on your location

Shipping Services
PostNL, which is the main Dutch postal company

Accepted Payment Types
PayPal Check/Money Order

Return Policy & Additional Details
No returns unless not as described. Buyer pays return.

Please send me a private message if interested in the item!
Forum: Lens Clubs 02-01-2015, 07:53 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
That was my understanding of 'stopping down' i.e. being able to close the aperture of a lens even if it has no aperture ring (like the DA's).

What you cannot do is focus wide open and have the aperture close to a preset value when making the exposure automatically. This is very important for a DSLR, as the OVF needs to be as bright as possible and thus benefits from a wide open aperture. With an EVF this is not important as it brightens up at will. Focussing may be a easier wide open in some occasions, but this advantage is often neutralized by the focus shift many (if not most) lenses have.
Forum: Lens Clubs 02-01-2015, 04:06 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Nice to see a DA*55 shot! I have been very curious to see how it performs on FF. And drawing style.

Btw I recently bought a 2nd hand Novoflex VR II Pro - would be great to see some pano's.
Forum: Lens Clubs 01-31-2015, 11:51 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Nice one. Even if at some point you decide the 20mm (which you won't in the foreseeable future :-) ) at a loss, this picture alone was worth it.
Forum: Lens Clubs 01-31-2015, 02:35 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
That is very ironic indeed. First destroy - then celebrate......

When the war was over, my grandfather helped in the port (un)loading ships. The story goes that, whilst at this job, he fetched the 1000th suitcase and noticed that on the label the name of his wife was written. And so he was reunited with his wife and two children, whom he hadn't seen or heard anything from in more then 3 years of camp life (he was in a labor camp in Sumatra most of the time). So Singapore is a special name in the family :-)
Forum: Lens Clubs 01-30-2015, 07:12 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Nice one again. Odd construction. I wondered where it was so I googled KTPH, which I found out is a hospital in Singapore. Reminded me of my grandfather, who was there in WOII. In Changi unfortunately.
Forum: Lens Clubs 01-29-2015, 05:10 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Some M20/4 shots from today. Not the best out of the series, but here you go.







Forum: Lens Clubs 01-27-2015, 08:43 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
Here you go! I suppose I do not have to tag the before and after :-)



Forum: Lens Clubs 01-27-2015, 08:16 AM  
Pentax Lenses on FF Club
Posted By schneider
Replies: 1,004
Views: 186,373
OK, I understand how you check for field curvature. Not too difficult to do.

I correct the distortion using PTlens. That program first recognizes the camera. Then you can select a profile out of the available lenses (in case of the A7 there are many :-) ). If you have a lens that is not present in the list, you can send the programmer a reference picture (see for details on the website, basically a building with suitable straight line) and he will create a profile - in the cases where I sent images they were ready within a couple of hours. I provided sample images for the M20, FA*24/2, FA31, FA43 and A50/1:1.2 so for those profiles are already available.

The beer is really good - it is made using smoked malts which makes it really special. Well suited with a savory meal. Too bad that the artificial light is so ugly :-(
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