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Joined on Mar 25, 2005


Total: 48, showing: 1 – 20
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On photo DSC02542 in d2f's photo gallery (1 comment in total)

macro lens setup

Link | Posted on Oct 14, 2016 at 06:30 UTC as 1st comment

If Sony produced a camera that met everyone's expectations I suspect some folks would stop taking pictures since all their excuses for not taking perfect photographs would be gone. It is a wonder that the greats of the analog days were able to produce wonderful images with such constancy using primitive tools. Kinda of makes me wonder why with all the technical advancements in the camera gear why the number of great photographers has not increase seven fold. Could the problem be not what is in photographer's hands but what is behind the camera? If that is the case then no camera system will ever solve the problem since if we reach that point it will be the camera that is creating the image and not the photographer.

Link | Posted on Oct 7, 2016 at 15:16 UTC as 21st comment | 1 reply

Thank you for posting your article on Canon's mirrorless product line development. Chances are Canon monitors DP website and has read the commentary, taking it to heart. Why I think this is the case is camera companies are moved by the sales figures and DP can influence sales. Canon has many new innovative technologies in the works along with the other camera companies. All we have to do as photography product consumers is vote with our wallet. Like we did buying smartphones with ever their improving camera attributes that choked off low end camera sales. Cheers.

Link | Posted on Sep 18, 2016 at 14:51 UTC as 284th comment

The reasoning is faulty given that any attacker is free to walk the streets and gather human intelligence. If they fear another country like China then Google street maps will not make a difference given that China has informants with camera phones and recon satellites that have already mapped all areas of interest to at least three foot resolution. If China were to attack India they would take out the government and military within seven days not attack the millions of people at the street level. India would in the end respond with nuclear weapons and that is what everybody should fear.

Link | Posted on Jun 17, 2016 at 14:54 UTC as 2nd comment | 2 replies

My copy arrived yesterday and I have taken a few images with the lens mounted to a a7s and most of the previous posted observations are correct. The out of focus areas with out of focus highlights do exhibit football shaped artifacts. This is not out of the ordinary for most lenses of this type. Contrast and sharpness appears to be low at wide open. Color fringing is present but is correctable in post. Later, I will run a comparison to a Canon FD 50mm 1.2 with a Vizelex FD-Nex ND throttle on a a6300. Mechanically the 85mm 1.2 lens has a well dampened aperture ring, but the focusing ring has some minor "metal scrubbing" issues.

Link | Posted on Jun 4, 2016 at 15:08 UTC as 1st comment
On article Pentax K-1 Pixel Shift Resolution: Updated Field Test (211 comments in total)

In the last sample image in the far left hand side, the flag appears to have challenged the image processing a bit.

Link | Posted on Jun 4, 2016 at 14:54 UTC as 34th comment
On article Polaroid-branded BrightSaber Pro wand packs 298 LEDs (41 comments in total)

Great idea it kind of reminds me of my battery powered hand held LED shop lights that I got from Sears.

Link | Posted on Mar 13, 2016 at 18:27 UTC as 1st comment

In some ways it reminds me of my Pentax 67.

Link | Posted on Oct 25, 2015 at 03:25 UTC as 59th comment | 1 reply
On article Ricoh teases spring 2016 full-frame Pentax DSLR debut (528 comments in total)

Here is my wishlist:
Programmable navigation menu and at least 3 custom control buttons.
No video.
Back lighted controls.
Daylight viewable OLED touch screen that can turn towards the front.
4 stop camera body image stabilization that adapts to the lens mounted.
Intelligent metering with face recognition and accurate white balancing.
Interchangeable focusing screens to facilitate manual focusing.
WiFi and wireless remote control using smartphone.
600 exposure battery.
Dual SD slots.
Dual finder, electronic & optical, the best of both worlds.
Weather sealed.
Low vibration/noise shutter with long life.
Hyperfocal focus position default when auto focus cannot acquire subject when shutter is released.
Threaded PC connector and hot shoe.
Loss less Raw and other raw storage options.
New type of sensor technology that renders current sensor technology obsolete.
Lightweight and small.
Comfortable hand grip with shutter release located on it.
Through the lens IR focus assist.
Len micro adjust.

Link | Posted on Sep 18, 2015 at 23:44 UTC as 106th comment | 5 replies
In reply to:

bernardf12: Sony's sensors are becoming so light-sensitive that their lab is going to suck all the photons out of the universe by accident one day. Let's hope they fix the 11 Bit lossy compression issue before then.

That is funny. I think Sony will eventually cough up a loss less raw file option and release the firmware. One thing for sure Sony is not sleeping on the job. Each generation of a the A7 series seems to widen the gap with Canon and Nikon. I think Sony has created a game changer, unfortunately a solution that could very well wipe out their own DSLR system sales. In my limited opinion the Sony DSLR lens adapter was just a means to get their current customer base to make the transition. Eventually I expect to see a select few of their DSLR lenses redesigned to the FE mount. And someday shut down the DSLR system production line altogether to support the FE/E mount production.

Link | Posted on Sep 14, 2015 at 07:16 UTC
In reply to:

photomedium: For those who folks complain about the price: when is the last time a 'mark II' version of anything has come out out with a lower price than the original?

Folks always find something wrong about everything, but themselves.

Link | Posted on Sep 14, 2015 at 05:56 UTC
In reply to:

straylightrun: One of the selling points for this camera from a video of a Sony interview, is the ability to map the record video button to a custom button. Why not put that in a firmware update for original a7s users?

Sony does listen to a select group of professional photographers and in the case of the a7s videographers. For example, they sent two engineers to listen to them when they released the a7rII according to Luminous landscapes. Hopefully they will do likewise with the a7sII release event. All camera manufacturers send out Beta versions to several key pro users for feedback. I would like to think if it were possible and pros stated as such, that they would include the change you mentioned in the next a7s firmware release.

Link | Posted on Sep 14, 2015 at 05:52 UTC

Random thoughts:

It is my impression that Sony changed their image processing software to produce "better" low light performance. If that is the case and there were no processor or sensor changes, it might be possible to pass the firmware update to existing Sony a7s owners.

For sure I just missed it, but does the five axis stabilization work with all lenses? (Adapted Canon, Nikon, AF/MF etc, etc.. I hope so.)

Another impression, that the raw image files are still being compressed, but that Sony is considering no compression option, with some degraded camera performance metric. I assume this would be a firmware update with an updated menu option.

I assume if the sensor has not been replaced that there is no serious issue with overheating, as some have reported with the a7rII.

Link | Posted on Sep 14, 2015 at 05:34 UTC as 16th comment | 1 reply

Speaking only for myself, the camera is secondary, it is the image that counts in the end. If a camera serves you well in creating the image you had in mind then so much the better. Also take into account the media in which the image will be observed. For example, posting on Facebook, web pages, small or large prints etc. etc..

Now ask yourself how many mega pixels do you need to meet the presentation media requirements?

Who is your intended audience of the images you create?

What are they looking for?

Start with the end product and work you way back to the camera. This way you will establish the requirements that the camera must meet in order to satisfy the observer of your images.

If you do not determine the requirements you will spend thousands of dollars and countless hours chasing after the wind. I know this from first hand experience.

Remember you create the image the camera merely records it.

Link | Posted on Sep 12, 2015 at 23:53 UTC as 27th comment | 4 replies

Can anyone here truthfully claim that they can do a better job than Mr. Oosting?

Link | Posted on Jun 26, 2015 at 23:19 UTC as 13th comment | 3 replies

Why buy a digital Leica rangefinder in the first place? Just get a used M6 and load either B&W or color film as the need arises, scan the film and enjoy the best of both worlds.

Link | Posted on Jun 3, 2015 at 14:19 UTC as 51st comment | 3 replies

If you cannot afford this particular lens and if you can find it, consider the Sima SF lens. It is 100mm F/2.0 macro MF. It employs perfectly circular aperture disks, is low cost, plastic construction and produces interesting results.

Speaking for only myself, I use what works to achieve the desired results.

Be it fog the filter with your breath, grease on a filter, a hole in nylon stockings over the front of the lens, Zeiss soft filters, optical lens designed for the application or a lens with less than perfect optical attributes and post processing.

Over several decades I have found each solution set has its unique strengths and weaknesses. But I never close my mind to new opportunities.

So take it with a grain of salt when you read the other comments that they have found the magic bullet for all applications or put down the Lensbaby 56mm lens without actually testing it for themselves.

Once I receive and mastered the lens I will post some images along with my opinions.

Link | Posted on Apr 12, 2015 at 18:12 UTC as 15th comment
On article Sony Alpha 7S Review (496 comments in total)

On the subject Sony full frame lenses, where are the Loxia lenses listed on DPReview? I tried both the Sony and Zeiss lens directories and could not find them listed. Thank you in advance.

Link | Posted on Mar 12, 2015 at 14:06 UTC as 29th comment
On article Sony Alpha 7S Review (496 comments in total)
In reply to:

RC: The 7S is a great camera, I used it during last new year's eve without a flash and the resulting photos are just amazing.
HOWEVER: What I am missing, from an amateur's photographer point of view, is a decently fast zoom lens (24-105 or 18-200 mm).

I agree there is a serious lack of lenses and if it were not for the third party adapters I could not recommend purchasing the a7S. Speaking from personal experience with the adapters and a good selection of manual and AF lenses, the lack of Sony lenses is not a issue. If I were in the market for additional lenses the high sensitivity of the a7s no longer forces me to buy fast lenses. Another reason I purchased the camera is for astrophotography. This is where the a7s really out performs all the other cameras I have, since it enables me to accurately focus on stars that I cannot see with my eyes in the sky with heavy light pollution. With a push of a programmed button I can magnify the field of view to such a degree that the slightest touch of the focusing knob makes the faintest stars appear, and another touch they disappear. The result of accurate focusing and a light sensitive camera is very rewarding to me.

Link | Posted on Mar 12, 2015 at 13:32 UTC

All optical lens designers are constrained by design parameters, the result of which determines the size and weight of any lens design they design. Given the sensor geometry & distance from the lens mounting surface, aperture, focal length and desired image quality it should not be too surprising to find DSLR and mirrorless optics designs are approximately the same as the focal length increases. Other parameters such as construction materials, weather sealing and auto focus implementation also come into play since the larger the optics the greater the weight and larger the motor assembly. That being said the size differences between DSLR and mirrorless lenses may appear in wide angle lenses where rear optics can get closer to the sensor on the order of mm. If that is the case then it would be unrealistic to expect the current FE lenses to be significantly smaller or lighter than their DSLR counterparts.

Link | Posted on Mar 5, 2015 at 15:21 UTC as 4th comment
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