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Forum: Pentax Full Frame
07-29-2014, 03:39 AM
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Simply to say, you are lying since you even don't have a statistic of the market for the needs of FF Pentax DSLR. Why doesn't the Pentax company release 10000 FF DSLRs to the market and see the response? Disputing here is helpless and meaningless.
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Forum: Pentax DSLR Discussion
06-06-2014, 09:19 AM
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The main point of this article is that a Nikon manual lens can be used on a Pentax DSLR body directly without an adapter.
Some people said the lens mount must be modified or take an adapter to mount a Nikon F-mount AI or Non-AI lens onto a Pentax DSLR body. I don't agree with these opinions. Please look at the picture on the website so that you will learn how to mount a Nikon AI or Non-AI F-mount lens onto a Pentax DSLR body. I also believe that a Nikon F-mount AIS lens can also work in the same ways that the pictures shown.
http://www.mitbbs.com/article_t/PhotoGear/35129953.html
AI-type Nikon F-mount lenses are just ok on a Pentax k-mount body. You even don't need to modify the lens's mount. You just need to turn the lens a little bit to left or right (depends on which side you are looking at the camera and the lens. After it is mounted and when you hold the camera to take a picture, the aperture center mark should be tilted to left) and try to find a best position to connect them. The connection is tight enough for most prime lenses as long as the weight is moderate, so that you are free to change aperture and focus. I am not sure whether the connection is secure or not if a lens is too weight.
With my experience, Both Non-AI and AI Nikon lenses can work on a Pentax body directly without an adapter. The focusing distance is exactly as the distance marks on the AI lenses, and a little bit change on the non-AI lenses but focusing on infinite is still ok.
However, you must be very careful when you try to mount a Nikon lens onto a Pentax body. "Tightened enough" is enough. It should not be over tightened, otherwise it may hurt your camera body's mount.
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Forum: Pentax SLR Lens Discussion
05-30-2014, 07:13 AM
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I don't agree with you. Look at the picture on the website so that you will learn how to mount a Nikon lens onto a Pentax DSLR body.
http://www.mitbbs.com/article_t/PhotoGear/35129953.html
AI-type Nikon F-mount lenses are just ok on a Pentax k-mount body. You even don't need to modify the lens's mount. You just need to turn the lens a little bit to left or right (depends on which side you are looking at the camera and the lens. After it is mounted and when you hold the camera to take a picture, the aperture center mark should be tilted to left) and try to find a best position to connect them. The connection is tight enough for most prime lenses as long as the weight is moderate, so that you are free to change aperture and focus. I am not sure whether the connection is secure or not if a lens is too weight.
With my experience, Both Non-AI and AI Nikon lenses can work on a Pentax body directly without an adapter. The focusing distance is exactly as the distance marks on the AI lenses, and a little bit change on the non-AI lenses but focusing on infinite is still ok.
However, you must be very careful when you try to mount a Nikon lens onto a Pentax body. "Tightened enough" is enough. It should not be over tightened, otherwise it may hurt your camera body's mount.
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Forum: Pentax Full Frame
05-20-2014, 10:02 AM
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I wish you could understand that it is "a lens dwells onto a camera body" but not "a camera body dwells onto a lens".
I would like to say it is a rebuilding of the "houses" for the lenses when a camera body (a house) was changed from film to digital. Unfortunately, the rebuilt houses are not the best ones for the lenses due to some technical issues in the history. This means that we should or must rebuild them again when all technical issues have been solved.
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Forum: Pentax Full Frame
05-19-2014, 10:09 PM
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However, you might not be able to do what you want to, and Your lenses might loss their values, if the "house" doesn't exist or is not good enough. I can predict that the price of old manual k-mount lenses will go up if Ricoh/Pentax releases a FF DSLR body that still supports them, and the company can take back more occupation of its products including the newly designed AUTO/Manual lenses.
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Forum: Pentax Full Frame
05-19-2014, 08:10 PM
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Simply to ask and answer:
(1) would you like to buy K-3 if K-01 is FF format and the price is $1099~1199? I will definitely not if I were you. I will buy a "FF-format" K-01.
(2) Which could make more money for Pentax company if K-01 were in FF-format rather than in APS-C format? I strongly believe the FF-format K-01 could do.
But now, pentax have lost the opportunity after Sony launched its a7-series. But it still have opportunities if Ricoh/Pentax release a FF-body since the users have being expected it for a long time. A "house" is always more important than a "stuff" in it. People always tend to spend more money on a "house"----camera body than on a "home stuff" ----- lens. As long as the "house" market is large enough, the lens market will be large enough.
I either don't know or can predict a consequence if Ricoh/Pentax decide to give up k-mount lenses as well as their users when the company release a FF camera body. But I could say many people should be very disappointed.
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Forum: Pentax Full Frame
05-19-2014, 12:04 PM
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Maybe one or two modern AUTO/Manual lenses, but most of them should be the old pure Manual FF lens that I already have. I love these pure manual lenses just for fan, and they are solid without possible electrical issues in future. I will never worry about them, and any repair job will be much much simpler and easier with very low costs. In addition, the old manual lenses may help to extend the lifetime of your modern AUTO-focusing lenses in a very low cost.
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Forum: Pentax Full Frame
05-19-2014, 10:31 AM
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If Ricoh/Pentax launch FF body, I won't by a Sony a7 series, but if it doesn't, I might have to buy one with an adapter for my old Pentax lenses on it.
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Forum: Pentax Full Frame
05-16-2014, 04:07 AM
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A camera body is just like a "house" and lenses are like something that people bought for the house. An APS-C camera body is not the best to the pentax manual lenses since it reduces the performance of the lenses, and the lenses specially designed for an APS-C body are something like "chicken ribs". Ricoh/Pentax should take the advantage of the market occupation of its old manual lenses to expand the market of the FF DSLR cameras, and the expansion may conversely help it to expand the market of its AUTO FF lenses. There should be no opportunity for developing AUTO FF lenses and expanding the market occupation if there were no a sufficient market occupation of the "houses"----FF camera body.
In my opinion, Pentax shouldn't develop APS-C cameras at the beginning of DSLR for it would like to provide a special support on a DSLR body for its old manual lenses. So, even both the K-01 and K-3 are bad strategical choices on the way that Pentax was going on, especially in the time when FF sensors had been popularized. The K-01 might be a great opportunity for both Pentax company and its users before Sony launched its a7 series if it were a FF-body design and the price at $1099~1199 rather than in APS-C format and the price at $599~699. I will never buy one K-01 or K-3 even if their prices are decreased to 1/3 of the current since I don't want to continue to play my old lenses with a APS-C body any more.
这两天用pentax的K20D玩了几个老手动头，有50/1.4，28/28，135/2.5，28-105/2.8-3.8以及70-210/2.8-4.0，感觉其机身在功能上为了方便手动镜头而设计得比较独到。除了对焦慢一点，其它性能都非常不错。不过，突然之间又发现，既然Pentax想在数码时代兼顾其老的优质手动镜头，为何要与佳能和尼康等在数码时代已经完全放弃了老式接口镜头的厂家比拼残幅机？如果一开始就直接出全幅机型，其机身的市场占有率是否会更高一些？
如果我是Pentax的主管，我可能在数码时代刚开始的时候就走全幅之路，以借用其老式镜头作为优势，一方面可以扩大机身的市场占有率，另一方面又为客户节省投资。所以，我认为Pentax在数码时代没能取得足够的成功，与其一开始就走残幅的路有很大的关系。这应该是一个商家在其决策中的部分失策导致的战略性失败。
最近的一大失策应该是继续在K-01和K-3机型上复制残幅，而不是果断地走全幅。如果它是全幅，我会毫不犹豫就买了。
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Forum: Welcomes and Introductions
04-26-2014, 08:39 PM
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I often use this site to review lens comments and got many helps at here. This is why I registered as a new member. I wish I could have a new experience in my life within this great society. Thanks for everyone here.
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Forum: Pentax DSLR Discussion
04-26-2014, 08:34 PM
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This is very helpful. Thanks very much.
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