Search found 97 matches

by aramkostanyan
Fri Nov 04, 2011 11:22 pm
Forum: Give it Your Best Shot
Topic: First Shots from Zurich
Replies: 20
Views: 3014

First Shots from Zurich

Hi,

Recently I moved to Zurich, Switzerland.
I am doing my master's degree in physics here, at ETH Zurich.
Here are couple of my first shots of Zurich.
I thought that there will be more Photoclub Alpha members in Zurich, to meet and talk.
by aramkostanyan
Fri Oct 21, 2011 6:46 pm
Forum: Alpha A-mount System
Topic: A noisy world on the A77
Replies: 38
Views: 9095

Re: A noisy world on the A77

That sounds a great comparison to do.
by aramkostanyan
Thu Oct 20, 2011 10:52 pm
Forum: Alpha A-mount System
Topic: A noisy world on the A77
Replies: 38
Views: 9095

Re: A noisy world on the A77

David, thanks for so good review.
Did you try to compare the high ISO images (3200, 6400) from A77 down scaled to 16MP with the ones from A55?
by aramkostanyan
Sun Sep 25, 2011 6:15 pm
Forum: Alpha A-mount System
Topic: Alpha 77s reaching UK buyers
Replies: 7
Views: 2502

Re: Alpha 77s reaching UK buyers

Waiting for your opinion and samples.
They are always the most reliable.
by aramkostanyan
Wed Aug 31, 2011 10:46 pm
Forum: Alpha A-mount System
Topic: dPreview A77 samples
Replies: 38
Views: 5180

Re: dPreview A77 samples



What would you say about these photos?
They look much better than DPR ones.
by aramkostanyan
Sun Aug 28, 2011 4:00 pm
Forum: Alpha A-mount System
Topic: A55 Ghosting effect
Replies: 20
Views: 2893

Re: A55 Ghosting effect

I totally agree with You David.
I was asking about it just for scientific interest.
by aramkostanyan
Sun Aug 28, 2011 8:16 am
Forum: Alpha A-mount System
Topic: A55 Ghosting effect
Replies: 20
Views: 2893

Re: A55 Ghosting effect

David, Did you try to take photos and try to get reflection without the mirror?
by aramkostanyan
Sat Aug 27, 2011 9:38 pm
Forum: Alpha A-mount System
Topic: A55 Ghosting effect
Replies: 20
Views: 2893

Re: A55 Ghosting effect

I think the same Doc,
is the sensor in SLT closer to the lens than in ordinary SLR's so that a bit reflected light gets the sensor, when in SLRs it does not?
by aramkostanyan
Sat Aug 27, 2011 8:19 pm
Forum: Alpha A-mount System
Topic: A55 Ghosting effect
Replies: 20
Views: 2893

Re: A55 Ghosting effect

If it is because of the mirror, than why is it next to the main light. As, in my opinion, if it is from the mirror, the light that reflected from the sensor reflected back to from the mirror, than it need to always be below (or upper) the main one.
by aramkostanyan
Sat Aug 27, 2011 8:16 pm
Forum: Alpha A-mount System
Topic: A77 hands on at endgadget
Replies: 34
Views: 5030

Re: A77 hands on at endgadget

That comparison is just to blame A55, only for that. As usual customer, who do not really look at the quality himself and just listens it is bad against canon, really without noticing WHICH Canon. I personally own A55, yes I agree that it is more pleasant to look through OVF, but I do not mind about...
by aramkostanyan
Fri Aug 26, 2011 5:21 pm
Forum: Alpha A-mount System
Topic: A77 hands on at endgadget
Replies: 34
Views: 5030

Re: A77 hands on at endgadget

Thank you for more detailed explanation David.
As I understood it's both the lens engineering issue and sensor size
by aramkostanyan
Fri Aug 26, 2011 4:01 pm
Forum: Alpha A-mount System
Topic: A77 hands on at endgadget
Replies: 34
Views: 5030

Re: A77 hands on at endgadget

As I mentioned I just copied the update what was written there. However, the sensor size does matter. Below you can find some pictures of diffraction pattern and the equation for diffraction angles dxsin(alpha)=nxlambda, d - is the diameter of the slit or hole, alpha is the angle at which the initia...
by aramkostanyan
Fri Aug 26, 2011 11:00 am
Forum: Alpha A-mount System
Topic: A77 hands on at endgadget
Replies: 34
Views: 5030

Re: A77 hands on at endgadget

Here is an update that I found in the first link given. Update: Commenter Steve Jones pointed out the following oversight: You should not be shooting at f10 on a 24.3MP APS-C camera if you want optimal sharpness as it will be diffraction limited. Indeed that's even true at f8 and diffraction will on...
by aramkostanyan
Thu Aug 18, 2011 9:49 am
Forum: Alpha A-mount System
Topic: A77, am I the first to notice?
Replies: 123
Views: 18136

Re: A77, am I the first to notice?

Greg, in my opinion, if you want to post on the web, I usually downscale the MP count and keep the quality to 100%, so you will not see any artifacts.
by aramkostanyan
Mon Aug 15, 2011 9:57 am
Forum: Alpha E-Mount system
Topic: Nex Spare Batteries
Replies: 21
Views: 3601

Re: Nex Spare Batteries

I usually like to disassemble things and see whats inside. )
I usually try to use only those Chinese batteries and keep the original ones as backups.
I think, let cheap ones die first.

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